resolved conflicts with upstream

Gruntfile.coffee

@@ -2,6 +2,77 @@ module.exports = (grunt) ->
     require('load-grunt-tasks') grunt, pattern: 'grunt-contrib-*'
 
     grunt.initConfig
+        watch:
+          concat:
+            tasks: 'concat'
+            files: ['src/*.js']
+
+        concat:
+          dist:
+            options:
+              process: (src, filepath) ->
+                if filepath != 'src/head.js' && filepath != 'src/tail.js'
+                  lines = []
+                  src.split('\n').forEach (line) ->
+                    lines.push( (if line.length > 0 then '    ' else '') + line)
+                  src = lines.join('\n')
+                return src
+            src: [
+              'src/head.js',
+              'src/core.js',
+              'src/config.js',
+              'src/scale.js',
+              'src/domain.js',
+              'src/data.js',
+              'src/data.convert.js',
+              'src/data.load.js',
+              'src/category.js',
+              'src/interaction.js',
+              'src/size.js',
+              'src/shape.js',
+              'src/shape.line.js',
+              'src/shape.bar.js',
+              'src/text.js',
+              'src/type.js',
+              'src/grid.js',
+              'src/tooltip.js',
+              'src/legend.js',
+              'src/axis.js',
+              'src/clip.js',
+              'src/arc.js',
+              'src/region.js',
+              'src/drag.js',
+              'src/selection.js',
+              'src/subchart.js',
+              'src/zoom.js',
+              'src/color.js',
+              'src/format.js',
+              'src/cache.js',
+              'src/class.js',
+              'src/util.js',
+              'src/api.focus.js',
+              'src/api.show.js',
+              'src/api.zoom.js',
+              'src/api.load.js',
+              'src/api.flow.js',
+              'src/api.selection.js',
+              'src/api.transform.js',
+              'src/api.group.js',
+              'src/api.grid.js',
+              'src/api.region.js',
+              'src/api.data.js',
+              'src/api.category.js',
+              'src/api.color.js',
+              'src/api.x.js',
+              'src/api.axis.js',
+              'src/api.legend.js',
+              'src/api.chart.js',
+              'src/api.tooltip.js',
+              'src/c3.axis.js',
+              'src/tail.js'
+            ]
+            dest: 'c3.js'
+
         jshint:
           c3: 'c3.js'
           spec: 'spec/*.js'
@@ -19,4 +90,4 @@ module.exports = (grunt) ->
             files:
               'c3.min.js': 'c3.js'
 
-    grunt.registerTask 'default', ['jshint', 'jasmine', 'uglify']
+    grunt.registerTask 'default', ['concat', 'jshint', 'jasmine', 'uglify']

README.md

 c3 [![Build Status](https://travis-ci.org/masayuki0812/c3.png?branch=master)](https://travis-ci.org/masayuki0812/c3)
 ==
 
-c3 is a D3-based chart library that allows you to integrate charts into web applications more deeply.
+c3 is a D3-based reusable chart library that enables deeper integration of charts into web applications.
 
-More information in [the wiki](https://github.com/masayuki0812/c3/wiki).
+More information is here: [http://c3js.org](http://c3js.org/)
 
-Samples in [c3js.org](http://c3js.org/#basic)
+## Tutorial and Examples
+
++ [Getting Started](http://c3js.org/gettingstarted.html)
++ [Examples](http://c3js.org/examples.html)
+
+Another samples are included in this repository:
++ [https://github.com/masayuki0812/c3/tree/master/htdocs/samples](https://github.com/masayuki0812/c3/tree/master/htdocs/samples)
+
+And you can run these samples as:
+```
+$ cd c3/htdocs
+$ python -m SimpleHTTPServer 8080
+```
+
+## Forum
+Now you can ask anything in this forum:
++ [https://groups.google.com/forum/#!forum/c3js](https://groups.google.com/forum/#!forum/c3js)
+
+## Playground
+Please fork this fiddle:
++ [http://jsfiddle.net/masayuki0812/7kYJu/](http://jsfiddle.net/masayuki0812/7kYJu/)
+
+## License
+MIT

bower.json

 {
   "name": "c3",
-  "main": "c3.min.js",
-  "version": "0.1.31",
+  "main": [
+    "c3.css",
+    "c3.js"
+  ],
+  "version": "0.3.0",
   "homepage": "https://github.com/masayuki0812/c3",
   "authors": [
     "Masayuki Tanaka <masayuki0812@mac.com>"

c3.css

@@ -13,6 +13,14 @@
           user-select: none;
 }
 
+.c3-legend-item-tile,
+.c3-xgrid-focus,
+.c3-ygrid,
+.c3-event-rect,
+.c3-bars path {
+  shape-rendering: crispEdges;
+}
+
 .c3-chart-arc path {
   stroke: #fff;
 
@@ -58,6 +66,11 @@
 .c3-text {
 }
 
+.c3-text.c3-empty {
+  fill: #808080;
+  font-size: 2em;
+}
+
 /*-- Line --*/
 
 .c3-line {
@@ -76,6 +89,9 @@
 
 /*-- Bar --*/
 
+.c3-bar {
+  stroke-width: 0;
+}
 .c3-bar._expanded_ {
   fill-opacity: 0.75;
 }
@@ -88,7 +104,7 @@
 
 /*-- Focus --*/
 
-.c3-target.c3-focused path.c3-line {
+.c3-target.c3-focused path.c3-line, .c3-target.c3-focused path.c3-step {
   stroke-width: 2px;
 }
 
@@ -115,8 +131,12 @@
 .c3-legend-item {
   font-size: 12px;
 }
-.c3-legend-item-hidden {
-  opacity: 0.1;
+
+.c3-legend-background {
+  opacity: 0.75;
+  fill: white;
+  stroke: lightgray;
+  stroke-width: 1
 }
 
 /*-- Tooltip --*/
@@ -161,3 +181,23 @@
   stroke-width: 0;
   opacity: 0.2;
 }
+
+.c3-chart-arcs .c3-chart-arcs-background {
+  fill: #e0e0e0;
+  stroke: none;
+}
+.c3-chart-arcs .c3-chart-arcs-gauge-unit {
+  fill: #000;
+  font-size: 16px;
+}
+.c3-chart-arcs .c3-chart-arcs-gauge-max {
+  fill: #777;
+}
+.c3-chart-arcs .c3-chart-arcs-gauge-min {
+  fill: #777;
+}
+
+.c3-chart-arc .c3-gauge-value {
+  fill: #000;
+  font-size: 28px;
+}

component.json

@@ -2,7 +2,7 @@
   "name": "c3",
   "repo": "masayuki0812/c3",
   "description": "A D3-based reusable chart library",
-  "version": "0.0.1",
+  "version": "0.3.0",
   "keywords": [],
   "dependencies": {
     "mbostock/d3": "3.4.4"

extensions/js/c3ext.js

+var c3ext = {};
+c3ext.generate = function (options) {
+
+    if (options.zoom2 != null) {
+        zoom2_reducers = options.zoom2.reducers || {};
+        zoom2_enabled = options.zoom2.enabled;
+        _zoom2_factor = options.zoom2.factor || 1;
+        _zoom2_maxItems = options.zoom2.maxItems;
+    }
+
+    if (!zoom2_enabled) {
+        return c3.generate(options);
+    }
+
+
+    var originalData = Q.copy(options.data);
+    var zoom2_reducers;
+    var zoom2_enabled;
+    var _zoom2_maxItems;
+
+    if (_zoom2_maxItems == null) {
+        var el = d3.select(options.bindto)[0][0];
+        if (el != null) {
+            var availWidth = el.clientWidth;
+
+            var pointSize = 20;
+            _zoom2_maxItems = Math.ceil(availWidth / pointSize);
+        }
+        if (_zoom2_maxItems == null || _zoom2_maxItems < 10) {
+            _zoom2_maxItems = 10;
+        }
+    }
+
+    function onZoomChanged(e) {
+        refresh();
+    }
+
+    var zoom2 = c3ext.ZoomBehavior({ changed: onZoomChanged, bindto: options.bindto });
+
+    zoom2.enhance = function () {
+        _zoom2_maxItems *= 2;
+        var totalItems = zoom2.getZoom().totalItems;
+        if (_zoom2_maxItems > totalItems)
+            _zoom2_maxItems = totalItems;
+        refresh();
+    }
+    zoom2.dehance = function () {
+        _zoom2_maxItems = Math.ceil(_zoom2_maxItems / 2) + 1;
+        refresh();
+    }
+
+    zoom2.maxItems = function () { return _zoom2_maxItems; };
+    function zoomAndReduceData(list, zoomRange, func, maxItems) {
+        //var maxItems = 10;//Math.ceil(10 * zoomFactor);
+        var list2 = list.slice(zoomRange[0], zoomRange[1]);
+        var chunkSize = 1;
+        var list3 = list2;
+        if (list3.length > maxItems) {
+            var chunkSize = Math.ceil(list2.length / maxItems);
+            list3 = list3.splitIntoChunksOf(chunkSize).map(func);
+        }
+        //console.log("x" + getCurrentZoomLevel() + ", maxItems=" + maxItems + " chunkSize=" + chunkSize + " totalBefore=" + list2.length + ", totalAfter=" + list3.length);
+        return list3;
+    }
+
+    function first(t) { return t[0]; }
+
+    var getDataForZoom = function (data) {
+        if (data.columns == null || data.columns.length == 0)
+            return;
+
+        var zoomInfo = zoom2.getZoom();
+        if (zoomInfo.totalItems != data.columns[0].length - 1) {
+            zoom2.setOptions({ totalItems: data.columns[0].length - 1 });
+            zoomInfo = zoom2.getZoom();
+        }
+        data.columns = originalData.columns.map(function (column) {
+            var name = column[0];
+            var reducer = zoom2_reducers[name] || first; //by default take the first
+
+            var values = column.slice(1);
+            var newValues = zoomAndReduceData(values, zoomInfo.currentZoom, reducer, _zoom2_maxItems);
+            return [name].concat(newValues);
+        });
+        return data;
+    };
+
+    getDataForZoom(options.data);
+    var chart = c3.generate(options);
+    var _chart_load_org = chart.load.bind(chart);
+    chart.zoom2 = zoom2;
+    chart.load = function (data) {
+        if (data.unload) {
+            unload(data.unload);
+            delete data.unload;
+        }
+        Q.copy(data, originalData);
+        refresh();
+    }
+    chart.unload = function (names) {
+        unload(names);
+        refresh();
+    }
+
+    function unload(names) {
+        originalData.columns.removeAll(function (t) { names.contains(t); });
+    }
+
+
+    function refresh() {
+        var data = Q.copy(originalData)
+        getDataForZoom(data);
+        _chart_load_org(data);
+    };
+
+
+    return chart;
+}
+
+c3ext.ZoomBehavior = function (options) {
+    var zoom = { __type: "ZoomBehavior" };
+
+    var _zoom2_factor;
+    var _left;
+    var totalItems;
+    var currentZoom;
+    var bindto = options.bindto;
+    var _zoomChanged = options.changed || function () { };
+    var element;
+    var mousewheelTimer;
+    var deltaY = 0;
+    var leftRatio = 0;
+
+
+    zoom.setOptions = function (options) {
+        if (options == null)
+            options = {};
+        _zoom2_factor = options.factor || 1;
+        _left = 0;
+        totalItems = options.totalItems || 0;
+        currentZoom = [0, totalItems];
+        _zoomChanged = options.changed || _zoomChanged;
+    }
+
+    zoom.setOptions(options);
+
+
+    function verifyZoom(newZoom) {
+        //newZoom.sort();
+        if (newZoom[1] > totalItems) {
+            var diff = newZoom[1] - totalItems;
+            newZoom[0] -= diff;
+            newZoom[1] -= diff;
+        }
+        if (newZoom[0] < 0) {
+            var diff = newZoom[0] * -1;
+            newZoom[0] += diff;
+            newZoom[1] += diff;
+        }
+        if (newZoom[1] > totalItems)
+            newZoom[1] = totalItems;
+        if (newZoom[0] < 0)
+            newZoom[0] = 0;
+    }
+
+    function zoomAndPan(zoomFactor, left) {
+        var itemsToShow = Math.ceil(totalItems / zoomFactor);
+        var newZoom = [left, left + itemsToShow];
+        verifyZoom(newZoom);
+        currentZoom = newZoom;
+        onZoomChanged();
+    }
+
+    function onZoomChanged() {
+        if (_zoomChanged != null)
+            _zoomChanged(zoom.getZoom());
+    }
+    function applyZoomAndPan() {
+        zoomAndPan(_zoom2_factor, _left);
+    }
+    function getItemsToShow() {
+        var itemsToShow = Math.ceil(totalItems / _zoom2_factor);
+        return itemsToShow;
+    }
+
+
+    zoom.getZoom = function () {
+        return { totalItems: totalItems, currentZoom: currentZoom.slice() };
+    }
+
+    zoom.factor = function (factor, skipDraw) {
+        if (arguments.length == 0)
+            return _zoom2_factor;
+        _zoom2_factor = factor;
+        if (_zoom2_factor < 1)
+            _zoom2_factor = 1;
+        if (skipDraw)
+            return;
+        applyZoomAndPan();
+    }
+    zoom.left = function (left, skipDraw) {
+        if (arguments.length == 0)
+            return _left;
+        _left = left;
+        if (_left < 0)
+            _left = 0;
+        var pageSize = getItemsToShow();
+        //_left += pageSize;
+        if (_left + pageSize > totalItems)
+            _left = totalItems - pageSize;
+        console.log({ left: _left, pageSize: pageSize });
+        if (skipDraw)
+            return;
+        applyZoomAndPan();
+    }
+
+    zoom.zoomAndPanByRatio = function (zoomRatio, panRatio) {
+
+        var pageSize = getItemsToShow();
+        var leftOffset = Math.round(pageSize * panRatio);
+        var mouseLeft = _left + leftOffset;
+        zoom.factor(zoom.factor() * zoomRatio, true);
+
+        var finalLeft = mouseLeft;
+        if (zoomRatio != 1) {
+            var pageSize2 = getItemsToShow();
+            var leftOffset2 = Math.round(pageSize2 * panRatio);
+            finalLeft = mouseLeft - leftOffset2;
+        }
+        zoom.left(finalLeft, true);
+        applyZoomAndPan();
+    }
+
+    zoom.zoomIn = function () {
+        zoom.zoomAndPanByRatio(2, 0);
+    }
+
+    zoom.zoomOut = function () {
+        zoom.zoomAndPanByRatio(0.5, 0);
+    }
+
+    zoom.panLeft = function () {
+        zoom.zoomAndPanByRatio(1, -1);
+    }
+    zoom.panRight = function () {
+        zoom.zoomAndPanByRatio(1, 1);
+    }
+
+    zoom.reset = function () {
+        _left = 0;
+        _zoom2_factor = 1;
+        applyZoomAndPan();
+    }
+
+    function doZoom() {
+        if (deltaY != 0) {
+            var maxDelta = 10;
+            var multiply = (maxDelta + deltaY) / maxDelta;
+            //var factor = chart.zoom2.factor()*multiply;
+            //factor= Math.ceil(factor*100) / 100;
+            console.log({ deltaY: deltaY, multiply: multiply });
+            zoom.zoomAndPanByRatio(multiply, leftRatio);//0.5);//leftRatio);
+            deltaY = 0;
+        }
+    }
+
+    function element_mousewheel(e) {
+        deltaY += e.deltaY;
+        leftRatio = (e.offsetX - 70) / (e.currentTarget.offsetWidth - 70);
+        //console.log({ "e.offsetX": e.offsetX, "e.currentTarget.offsetWidth": e.currentTarget.offsetWidth, leftRatio: leftRatio });
+        mousewheelTimer.set(150);
+        e.preventDefault();
+    }
+
+    if (bindto != null) {
+        element = $(options.bindto);
+        if (element.mousewheel) {
+            mousewheelTimer = new Timer(doZoom);
+            element.mousewheel(element_mousewheel);
+        }
+    }
+
+    return zoom;
+
+}
+
+if (typeof (Q) == "undefined") {
+    var Q = function () {
+    };
+
+    Q.copy = function (src, target, options, depth) {
+        ///<summary>Copies an object into a target object, recursively cloning any object or array in the way, overwrite=true will overwrite a primitive field value even if exists</summary>
+        ///<param name="src" />
+        ///<param name="target" />
+        ///<param name="options" type="Object">{ overwrite:false }</param>
+        ///<returns type="Object">The copied object</returns>
+        if (depth == null)
+            depth = 0;
+        if (depth == 100) {
+            console.warn("Q.copy is in depth of 100 - possible circular reference")
+        }
+        options = options || { overwrite: false };
+        if (src == target || src == null)
+            return target;
+        if (typeof (src) != "object") {
+            if (options.overwrite || target == null)
+                return src;
+            return target;
+        }
+        if (typeof (src.clone) == "function") {
+            if (options.overwrite || target == null)
+                return src.clone();
+            return target;
+        }
+        if (target == null) {
+            if (src instanceof Array)
+                target = [];
+            else
+                target = {};
+        }
+
+        if (src instanceof Array) {
+            for (var i = 0; i < src.length; i++) {
+                var item = src[i];
+                var item2 = target[i];
+                item2 = Q.copy(item, item2, options, depth + 1);
+                target[i] = item2;
+            }
+            target.splice(src.length, target.length - src.length);
+            return target;
+        }
+        for (var p in src) {
+            var value = src[p];
+            var value2 = target[p];
+            value2 = Q.copy(value, value2, options, depth + 1);
+            target[p] = value2;
+        }
+        return target;
+    }
+}
+if (typeof (Timer) == "undefined") {
+    var Timer = function (action, ms) {
+        this.action = action;
+        if (ms != null)
+            this.set(ms);
+    }
+
+    Timer.prototype.set = function (ms) {
+        if (ms == null)
+            ms = this._ms;
+        else
+            this._ms = ms;
+        this.clear();
+        if (ms == null)
+            return;
+        this.timeout = window.setTimeout(this.onTick.bind(this), ms);
+    }
+
+    Timer.prototype.onTick = function () {
+        this.clear();
+        this.action();
+    }
+
+    Timer.prototype.clear = function (ms) {
+        if (this.timeout == null)
+            return;
+        window.clearTimeout(this.timeout);
+        this.timeout = null;
+    }
+}
+if (typeof(Array.prototype.splitIntoChunksOf)=="undefined") {
+    Array.prototype.splitIntoChunksOf = function (countInEachChunk) {
+        var chunks = Math.ceil(this.length / countInEachChunk);
+        var list = [];
+        for (var i = 0; i < this.length; i += countInEachChunk) {
+            list.push(this.slice(i, i + countInEachChunk));
+        }
+        return list;
+    }
+}
\ No newline at end of file

htdocs/css/index.css

+.row {
+  margin-left: 8px;
+}
+.row a {
+  display: block;
+  text-align: left;
+  font-size: 1.2em;
+  line-height: 1.8;
+}
+.row h3 {
+  color: #777;
+}
\ No newline at end of file

htdocs/data/c3_test.json

+{
+  "data1": [120, 140, 170, 150, 180],
+  "data2": [80, 50, 100, 70, 120],
+  "data3": [200, 210, 250, 300, 280]
+}

htdocs/data/c3_test2_ts.csv

+x,data1,data2,data3
+2013-04-01,20,180,400
+2013-04-02,40,150,310
+2013-04-03,70,120,470
+2013-04-04,50,170,400
+2013-04-05,80,200,380
\ No newline at end of file

htdocs/data/c3_test_2.json

+{
+  "data1": [20, 40, 70, 50, 80, 30],
+  "data2": [180, 150, 200, 170, 220, 400],
+  "data3": [1200, 1210, 1250, 1300, 1280, 1000]
+}

htdocs/data/c3_test_3.json

+[
+  { "id": 1, "name": "abc", "data1": 1200, "data2": 500 },
+  { "id": 2, "name": "efg", "data1": 900,  "data2": 600 },
+  { "id": 3, "name": "pqr", "data1": 1150, "data2": 300 },
+  { "id": 4, "name": "xyz", "data1": 1020, "data2": 900 }
+]

htdocs/data/c3_test_ts.csv

+x,data1,data2,data3
+2012-12-31,120,80,200
+2013-01-01,140,50,210
+2013-01-02,170,100,250
+2013-01-03,150,70,300
+2013-01-04,180,120,280
\ No newline at end of file

htdocs/index.html

 <html>
   <head>
     <link href="./css/bootstrap.min.css" rel="stylesheet">
+    <link href="./css/index.css" rel="stylesheet">
   </head>
   <body>
     <div class="container">
       <div class="section">
-        <a href="#basic" name="basic"><h2># <span>Basic</span></h2></a>
+        <h2># <span>Chart Type</span></h2>
         <div>
           <div class="row">
             <div class="col-md-4">
-              <h3>Simple Line Chart</h3>
-              <p>Simple line chart for getting started.</p>
-              <p><a class="btn btn-default" href="./samples/simple.html" role="button">View details &raquo;</a></p>
+              <h3>Line Chart</h3>
+              <a href="./samples/simple.html">
+                Line chart with ordinary data
+              </a>
+              <a href="./samples/chart_spline.html">
+                Spline chart with ordinary data
+              </a>
+              <a href="./samples/chart_step.html">
+                Step chart with ordinary data
+              </a>
             </div>
             <div class="col-md-4">
-              <h3>Multiple Line Chart</h3>
-              <p>Multiple line chart with multiple data.</p>
-              <p><a class="btn btn-default" href="./samples/simple_multiple.html" role="button">View details &raquo;</a></p>
+              <h3>Area Chart</h3>
+              <a href="./samples/chart_area.html">
+                Area chart with ordinary data
+              </a>
+              <a href="./samples/chart_area_spline.html">
+                Area-spline chart with ordinary data
+              </a>
+              <a href="./samples/chart_area_step.html">
+                Area-step chart with ordinary data
+              </a>
+              <a href="./samples/chart_area_stacked.html">
+                Stacked Area chart with ordinary data
+              </a>
+              <a href="./samples/chart_area_spline_stacked.html">
+                Stacked Area-spline chart with ordinary data
+              </a>
+              <a href="./samples/chart_area_step_stacked.html">
+                Stacked Area-step chart with ordinary data
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Bar Chart</h3>
+              <a href="./samples/chart_bar.html">
+                Bar chart with ordinary data
+              </a>
+              <a href="./samples/chart_bar_stacked.html">
+                Stacked Bar chart with ordinary data
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Pie Chart</h3>
+              <a href="./samples/chart_pie.html">
+                Pie chart with ordinary data
+              </a>
+              <a href="./samples/chart_pie_sort.html">
+                Pie chart with/without sort
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Donut Chart</h3>
+              <a href="./samples/chart_donut.html">
+                Donut chart with ordinary data
+              </a>
             </div>
             <div class="col-md-4">
-              <h3>Timeseries Chart</h3>
-              <p>Simple line chart with timeseries data.</p>
-              <p><a class="btn btn-default" href="./samples/timeseries.html" role="button">View details &raquo;</a></p>
+              <h3>Gauge Chart</h3>
+              <a href="./samples/chart_gauge.html">
+                Gauge chart with ordinary data
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Scatter Chart</h3>
+              <a href="./samples/chart_scatter.html">
+                Scatter chart with ordinary data
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Combination Chart</h3>
+              <a href="./samples/chart_combination.html">
+                Combination chart with ordinary data
+              </a>
             </div>
           </div>
         </div>
       </div>
+
       <div class="section">
-        <a href="#axes" name="axes"><h2># <span>Axes</span></h2></a>
+        <h2># <span>Axes</span></h2>
         <div>
           <div class="row">
             <div class="col-md-4">
-              <h3>Categorized Axis</h3>
-              <p>Axis with ticks categorizing each data.</p>
-              <p><a class="btn btn-default" href="./samples/categorized.html" role="button">View details &raquo;</a></p>
+              <h3>Timeseries Axis</h3>
+              <a href="./samples/timeseries.html">
+                Line chart with timeseries data
+              </a>
+              <a href="./samples/timeseries_descendent.html">
+                Line chart with descendent timeseries data
+              </a>
+              <a href="./samples/timeseries_raw.html">
+                Line chart with timeseries data as Number
+              </a>
+              <a href="./samples/timeseries_date.html">
+                Line chart with timeseries data as Date object
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Category Axis</h3>
+              <a href="./samples/categorized.html">
+                Chart with category axis
+              </a>
+              <a href="./samples/custom_x_categorized.html">
+                Chart with category data on category axis
+              </a>
             </div>
             <div class="col-md-4">
               <h3>Additional Axis</h3>
-              <p>Additional y axis can be added.</p>
-              <p><a class="btn btn-default" href="./samples/axes_y2.html" role="button">View details &raquo;</a></p>
+              <a href="./samples/axes_y2.html">
+                Add y2 axis
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Axis Range</h3>
+              <a href="./samples/axes_range.html">
+                Set range of axis
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Axis Padding</h3>
+              <a href="./samples/axes_padding.html">
+                Set padding of axis
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>X Axis Tick</h3>
+              <a href="./samples/axes_x_tick_values.html">
+                Set values for x axis
+              </a>
+              <a href="./samples/axes_x_tick_culling.html">
+                Set culling for x axis
+              </a>
+              <a href="./samples/axes_x_tick_fit.html">
+                Set fitting for x axis
+              </a>
+              <a href="./samples/axes_x_tick_rotate.html">
+                Set rotation for x axis
+              </a>
+              <a href="./samples/axes_x_range_timeseries.html">
+                Set range in timeseries for x axis
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Default Y Domain</h3>
+              <a href="./samples/axes_y_default.html">
+                Set default y domain
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Y Domain</h3>
+              <a href="./samples/domain_y.html">
+                Update y domain automatically
+              </a>
             </div>
           </div>
         </div>
       </div>
+
       <div class="section">
-        <a href="#data" name="data"><h2># <span>Data</span></h2></a>
+        <h2># <span>Data</span></h2>
         <div>
           <div class="row">
             <div class="col-md-4">
-              <h3>Column Oriented Data</h3>
-              <p>Column-oriented data can be used as input.</p>
-              <p><a class="btn btn-default" href="./samples/data_columned.html" role="button">View details &raquo;</a></p>
+              <h3>Input Data</h3>
+              <a href="./samples/data_columned.html">
+                Columned data
+              </a>
+              <a href="./samples/data_rowed.html">
+                Rowed data
+              </a>
+              <a href="./samples/data_json.html">
+                JSON data
+              </a>
+              <a href="./samples/data_url.html">
+                Data from URL
+              </a>
+              <a href="./samples/data_hide.html">
+                Hide data when init
+              </a>
             </div>
             <div class="col-md-4">
-              <h3>Row Oriented Data</h3>
-              <p>Row-oriented data can be used as input.</p>
-              <p><a class="btn btn-default" href="./samples/data_rowed.html" role="button">View details &raquo;</a></p>
+              <h3>Load Data</h3>
+              <a href="./samples/data_load.html">
+                Load ordinary data
+              </a>
+              <a href="./samples/data_load_timeseries.html">
+                Load timeseries data
+              </a>
             </div>
             <div class="col-md-4">
-              <h3>Data from URL</h3>
-              <p>Data from URL can be used as input.</p>
-              <p><a class="btn btn-default" href="./samples/data_url.html" role="button">View details &raquo;</a></p>
+              <h3>Custom X</h3>
+              <a href="./samples/custom_x_scale.html">
+                Custom x for all data
+              </a>
+              <a href="./samples/custom_xs_scale.html">
+                Custom x for each data
+              </a>
             </div>
           </div>
           <div class="row">
             <div class="col-md-4">
-              <h3>Load Data</h3>
-              <p>Load data dynamically.</p>
-              <p><a class="btn btn-default" href="./samples/data_load.html" role="button">View details &raquo;</a></p>
+              <h3>Data Label</h3>
+              <a href="./samples/data_label.html">
+                Show label on data
+              </a>
+              <a href="./samples/data_label_format.html">
+                Show label on data with format
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Data Region</h3>
+              <a href="./samples/data_region.html">
+                Set region of data
+              </a>
+              <a href="./samples/data_region_timeseries.html">
+                Set region of timeseries data
+              </a>
             </div>
           </div>
         </div>
       </div>
+
       <div class="section">
-        <a href="#chart_type" name="chart_type"><h2># <span>Chart Type</span></h2></a>
+        <h2># <span>Components</span></h2>
         <div>
           <div class="row">
             <div class="col-md-4">
-              <h3>Bar Chart</h3>
-              <p>Display as Bar Chart</p>
-              <p><a class="btn btn-default" href="./samples/chart_bar.html" role="button">View details &raquo;</a></p>
+              <h3>Grid</h3>
+              <a href="./samples/grids.html">
+                 Show x/y grids
+              </a>
+              <a href="./samples/grids_timeseries.html">
+                 Show x/y grids with timeseries
+              </a>
+              <a href="./samples/grid_x_lines.html">
+                 Show optional x grids
+              </a>
+              <a href="./samples/grid_x_lines_timeseries.html">
+                 Show optional x grids with timeseries
+              </a>
+              <a href="./samples/grid_focus.html">
+                 Hide focus grid
+              </a>
             </div>
             <div class="col-md-4">
-              <h3>Stacked Bar Chart</h3>
-              <p>Display as Stacked Bar Chart</p>
-              <p><a class="btn btn-default" href="./samples/chart_bar_stacked.html" role="button">View details &raquo;</a></p>
+              <h3>Region</h3>
+              <a href="./samples/regions.html">
+                 Show regions
+              </a>
             </div>
             <div class="col-md-4">
-              <h3>Spline Chart</h3>
-              <p>Display as Spline Chart</p>
-              <p><a class="btn btn-default" href="./samples/chart_spline.html" role="button">View details &raquo;</a></p>
+              <h3>Legend</h3>
+              <a href="./samples/legend.html">
+                 Show legend
+              </a>
             </div>
           </div>
           <div class="row">
             <div class="col-md-4">
-              <h3>Area Chart</h3>
-              <p>Display as Filled Area Chart</p>
-              <p><a class="btn btn-default" href="./samples/chart_area.html" role="button">View details &raquo;</a></p>
+              <h3>Tooltip</h3>
+              <a href="./samples/tooltip_show.html">
+                Show tooltip
+              </a>
+              <a href="./samples/tooltip_grouped.html">
+                Show tooltip as each data
+              </a>
             </div>
+          </div>
+        </div>
+      </div>
+
+      <div class="section">
+        <h2># <span>Chart Option</span></h2>
+        <div>
+          <div class="row">
             <div class="col-md-4">
-              <h3>Combination Chart</h3>
-              <p>Display as Bar Chart</p>
-              <p><a class="btn btn-default" href="./samples/chart_combination.html" role="button">View details &raquo;</a></p>
+              <h3>Bind</h3>
+              <a href="./samples/bindto.html">
+                Specify the element binded
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Padding</h3>
+              <a href="./samples/padding.html">
+                Change padding of chart
+              </a>
+              <a href="./samples/padding_update.html">
+                Auto padding when chart updated
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Empty Data</h3>
+              <a href="./samples/emptydata.html">
+                Show text when empty data
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Point</h3>
+              <a href="./samples/point_r.html">
+                Change radius of data point
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Bar</h3>
+              <a href="./samples/bar_zerobased.html">
+                Disable zero-based y domain
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Area</h3>
+              <a href="./samples/area_zerobased.html">
+                Disable zero-based y domain
+              </a>
             </div>
           </div>
         </div>
       </div>
+
       <div class="section">
-        <a href="#interaction" name="interaction"><h2># <span>Interaction</span></h2></a>
+        <h2># <span>Interaction</span></h2>
         <div>
           <div class="row">
             <div class="col-md-4">
               <h3>Zoom</h3>
-              <p>Zoom by mouse wheel event and slide by drag.</p>
-              <p><a class="btn btn-default" href="./samples/interaction_zoom.html" role="button">View details &raquo;</a></p>
+              <a href="./samples/zoom.html">
+                Enable zoom
+              </a>
+              <a href="./samples/zoom.html">
+                Zoom on category axis
+              </a>
+              <a href="./samples/zoom_reduction.html">
+                Zoom with reduction
+              </a>
+              <a href="./samples/zoom_onzoom.html">
+                Callback on zoom
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Subchart</h3>
+              <a href="./samples/subchart.html">
+                Show subchart
+              </a>
+              <a href="./samples/subchart_onbrush.html">
+                Callback on brush
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Selection</h3>
+              <a href="./samples/selection.html">
+                Select data
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Disable Interaction</h3>
+              <a href="./samples/interaction_enabled.html">
+                Disable interaction
+              </a>
             </div>
           </div>
         </div>
+      </div>
 
+      <div class="section">
+        <h2># <span>API</span></h2>
+        <div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Flow</h3>
+              <a href="./samples/api_flow.html">
+                Flow ordinary data
+              </a>
+              <a href="./samples/api_flow_timeseries.html">
+                Flow timeseries data
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Axis</h3>
+              <a href="./samples/api_axis_range.html">
+                Update axis range
+              </a>
+              <a href="./samples/api_axis_label.html">
+                Update axis label
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Grid</h3>
+              <a href="./samples/api_xgrid_lines.html">
+                Update x grid lines
+              </a>
+              <a href="./samples/api_ygrid_lines.html">
+                Update y grid lines
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Legend</h3>
+              <a href="./samples/api_legend.html">
+                Update legend
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Transform</h3>
+              <a href="./samples/api_transform.html">
+                Transform chart
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Element</h3>
+              <a href="./samples/element.html">
+                Access svg element of chart
+              </a>
+            </div>
+          </div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>Data</h3>
+              <a href="./samples/api_data_colors.html">
+                Update data color
+              </a>
+            </div>
+            <div class="col-md-4">
+              <h3>Tooltip</h3>
+              <a href="./samples/api_tooltip_show.html">
+                Show tooltip programmatically
+              </a>
+            </div>
+          </div>
+        </div>
       </div>
+
+      <div class="section">
+        <h2># <span>Other Library</span></h2>
+        <div>
+          <div class="row">
+            <div class="col-md-4">
+              <h3>RequireJS</h3>
+              <a href="./samples/requirejs.html">
+                Load by RequireJS
+              </a>
+            </div>
+          </div>
+        </div>
+      </div>
+
     </div>
   </body>
 </html>

htdocs/js/extensions

+../../extensions/js
\ No newline at end of file

htdocs/js/samples/plugin.js

+c3.chart.internal.fn.isTimeSeries = function () {
+    console.log('custom isTimeSeries');
+    return false;
+};
+c3.chart.internal.fn.additionalConfig.test1 = undefined;
+c3.chart.internal.fn.additionalConfig.test2 = undefined;
+
+c3.chart.fn.hoge = function () {
+    console.log("hoge()", this.internal.isTimeSeries());
+};
+c3.chart.fn.test = function () {
+    console.log('test()', this.internal.config.test1);
+};

htdocs/js/samples/requirejs.js

@@ -7,7 +7,7 @@ require.config({
 
 require(["d3", "c3"], function(d3, c3) {
 
-    var chart = c3.generate({
+    window.chart = c3.generate({
         data: {
             columns: [
                 ['sample', 30, 200, 100, 400, 150, 250]
@@ -15,4 +15,4 @@ require(["d3", "c3"], function(d3, c3) {
         }
     });
 
-});
\ No newline at end of file
+});

htdocs/js/samples/zoom_reduction.js

+var chart;
+function refresh() {
+    if (suspendRefresh)
+        return;
+    chart.load({
+        columns: [
+            ["Value"].concat(zoom(column, currentZoom, "t=>Math.round(t.avg())".toLambda())),
+            ["xColumn"].concat(zoom(xColumn, currentZoom, "t=>t[0]".toLambda())),
+        ]
+    });
+}
+
+function getChart() {
+    return chart;
+}
+function main() {
+    var last = 0;
+    var max = 10000;
+    var column = Array.generate(max, function (i) {
+        return last += Math.randomInt(-10, 10);
+    });
+    var xColumn = Array.generateNumbers(0, max);
+    var options = {
+        bindto: "#divChart",
+        data: {
+            columns: [
+                ["Value"].concat(column),
+                ["x"].concat(xColumn),
+            ],
+            type: "line",
+            x: "x"
+        },
+        zoom2: {
+            enabled: true,
+        }
+    };
+    chart = c3ext.generate(options);
+
+    window.setInterval(refreshStatus, 1000);
+
+    function refreshStatus() {
+        var zoomInfo = chart.zoom2.getZoom();
+        var info = {
+            reduced: chart.zoom2.maxItems(),
+            actual: (zoomInfo.currentZoom[1] - zoomInfo.currentZoom[0]),
+            range: zoomInfo.currentZoom[0] + "-" + zoomInfo.currentZoom[1],
+            total: zoomInfo.totalItems
+        };
+        $("#status").text(JSON.stringify(info, null, " "));
+    }
+
+};
+
+if (typeof (Array.generate) == "undefined") {
+    Array.generate = function (length, generator) {
+        var list = new Array(length);
+        for (var i = 0; i < length; i++) {
+            list[i] = generator(i);
+        }
+        return list;
+    }
+}
+if (typeof (Math.randomInt) == "undefined") {
+    Math.randomInt = function (min, max) {
+        return Math.floor(Math.random() * (max - min + 1)) + min;
+    }
+}
+if (typeof (Array.generateNumbers) == "undefined") {
+    Array.generateNumbers = function (from, until) {
+        if (arguments.length == 1) {
+            until = from;
+            from = 0;
+        }
+        var length = until - from;
+        var list = new Array(length);
+        for (var i = 0; i < length; i++) {
+            list[i] = i + from;
+        }
+        return list;
+    }
+}
\ No newline at end of file

htdocs/samples/api_axis_range.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          axes: {
+            data1: 'y',
+            data2: 'y2',
+          }
+        },
+        axis: {
+          x: {
+            label: 'X Label'
+          },
+          y: {
+            label: {
+              text: 'Y Axis Label',
+              position: 'outer-middle'
+            }
+          },
+          y2: {
+            show: true,
+            label: {
+              text: 'Y2 Axis Label',
+              position: 'outer-middle'
+            }
+          }
+        },
+        tooltip: {
+//          enabled: false
+        },
+        zoom: {
+//          enabled: true
+        },
+        subchart: {
+//          show: true
+        }
+      });
+
+      setTimeout(function () {
+        chart.axis.max(500);
+      }, 1000);
+
+      setTimeout(function () {
+        chart.axis.min(-500);
+      }, 2000);
+
+      setTimeout(function () {
+        chart.axis.max({y: 600, y2: 100});
+      }, 3000);
+
+      setTimeout(function () {
+        chart.axis.min({y: -600, y2: -100});
+      }, 4000);
+
+      setTimeout(function () {
+        chart.axis.range({max: 1000, min: -1000});
+      }, 5000);
+
+      setTimeout(function () {
+        chart.axis.range({min: {y: 1000}, max: {y: 2000}});
+      }, 6000);
+
+      setTimeout(function () {
+        chart.axis.range({max: {y: 600, y2: 100}, min: {y: -100, y2: 0}});
+      }, 7000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/api_category.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+    <div id="message"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart = c3.generate({
+        data: {
+          x: 'x',
+          columns: [
+            ['x', '1e-3', '1e-2', '1'],
+            ['data1', 30, 200, 100, 400, 150, 250, 50, 100, 250]
+          ]
+        },
+        axis: {
+          x: {
+            type: 'categorized'
+          }
+        }
+      });
+
+      setTimeout(function () {
+        d3.select('#message').node().innerHTML = "chart.categories() =>" + chart.categories();
+      }, 1000);
+
+      setTimeout(function () {
+        chart.categories(['updated 1', 'updated 2', 'updated 3', 'updated 4']);
+        d3.select('#message').node().innerHTML = "";
+      }, 2000);
+
+      setTimeout(function () {
+        d3.select('#message').node().innerHTML = "chart.category(1) =>" + chart.category(1);
+      }, 3000);
+
+      setTimeout(function () {
+        chart.category(1, 'UPDATED 1');
+        d3.select('#message').node().innerHTML = "";
+      }, 4000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/simple_grid_x_lines.html → htdocs/samples/api_data_colors.html

@@ -6,25 +6,28 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
-        bindto: '#chart',
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250]
-          ]
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
         },
-        grid: {
+        axis: {
           x: {
-            lines: [{
-               value: 3,
-               text: '3',
-               class: 'lineFor3'
-            }]
+            type: 'category'
           }
         }
       });
+
+      setTimeout(function () {
+        chart.data.colors({data1: '#000'});
+      }, 1000);
+
+
     </script>
   </body>
 </html>

htdocs/samples/api_flow.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+    <style>
+      .c3-region-1 {
+        fill: #dd3333;
+        fill-opacity: 0.8
+      }
+    </style>
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var padding = {}, types = {}, chart, generate = function () { return c3.generate({
+        data: {
+          columns: [
+            ['data1'],
+            ['data2'],
+          ],
+          types: types,
+          labels: true
+        },
+        bar: {
+          width: 10
+        },
+        axis: {
+          x: {
+            padding: padding
+          },
+          y: {
+/*
+            min: -100,
+            max: 1000
+*/
+          }
+        },
+        grid: {
+          x: {
+            show: true,
+            lines: [{value: 3, text:'Label 3'}, {value: 4.5, text: 'Label 4.5'}]
+          },
+          y: {
+            show: true
+          }
+        },
+        regions: [
+          {start:2, end:4, class:'region1'},
+          {start:100, end:200, axis:'y'},
+        ],
+      });
+      };
+
+    function run() {
+
+      chart = generate();
+
+      setTimeout(function () {
+        // Load only one data
+        chart.flow({
+          rows: [
+            ['data1', 'data2', 'data3'],
+            [500, 100, 200],
+            [200, null, null],
+            [100, 50, null] 
+          ],
+          duration: 1500,
+
+          done: function () {
+            // Load 2 data without data2 and remove 1 data
+            chart.flow({
+              columns: [
+                ['data1', 200, 300],
+                ['data3', 100, 100]
+              ],
+              length: 0,
+              duration: 1500,
+
+              done: function () {
+                chart.flow({
+                  columns: [
+                    ['data1', 200, 300],
+                    ['data2', 200, 300],
+                    ['data3', 100, 100]
+                  ],
+                  length: 2,
+                  duration: 1500,
+                  done: function () {
+
+                    chart.flow({
+                      columns: [
+                        ['data1', 500],
+                        ['data2', 100],
+                        ['data3', 200]
+                      ],
+                      length: 1,
+                      duration: 1500,
+                    });
+                  }
+
+                });
+              }// done
+
+            });
+          },
+
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 250],
+            ['data2', 350],
+            ['data3', 150]
+          ],
+          length: 0
+        });
+      }, 9000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 100],
+            ['data2', 50],
+            ['data3', 300]
+          ],
+          length: 2
+        });
+      }, 10000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 600],
+            ['data2', 400],
+            ['data3', 500]
+          ],
+          to: 2,
+        });
+      }, 11000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 100],
+            ['data2', 200],
+            ['data3', 300]
+          ]
+        });
+      }, 12000);
+
+      setTimeout(function () {
+        chart = generate();
+      }, 13000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 500, 100],
+            ['data2', 100, 200],
+            ['data3', 200, 300],
+          ],
+          duration: 1500,
+          done: function () {
+            chart.flow({
+              columns: [
+                ['data1', 200],
+                ['data3', 100]
+              ],
+//              duration: 1000,
+              length: 1
+            });
+          },
+        });
+      }, 14000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 200],
+            ['data2', 300],
+            ['data3', 100]
+          ],
+          to: 1,
+        });
+      }, 18000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['data1', 200],
+            ['data2', 300],
+            ['data3', 400]
+          ]
+        });
+      }, 19000);
+
+    }
+
+    run();
+
+    // Test for no padding
+    setTimeout(function () {
+      padding = {left: 0, right: 0};
+      run();
+    }, 22000);
+
+    // Test for other chart types
+    setTimeout(function () {
+      types = {
+        data2: 'area',
+        data3: 'bar',
+      };
+      run();
+    }, 45000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/api_flow_timeseries.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var padding = {}, types = {};
+
+      var generate = function () { return c3.generate({
+        data: {
+          x: 'x',
+          columns: [
+            ['x', ],
+            ['data1', ],
+            ['data2', ],
+//            ['x', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-10', '2013-01-11', '2013-01-12'],
+//            ['data1', 30, 200, 100, 400, 150, 250],
+//            ['data2', 310, 400, 200, 100, 450, 150],
+//            ['data3', 310, 400, 200, 100, null, 150],
+          ],
+          types: types,
+//          labels: true
+        },
+        bar: {
+          width: 10
+        },
+        axis: {
+          x: {
+            type: 'timeseries',
+            tick: {
+              format: '%m/%d',
+            },
+            padding: padding
+          },
+          y: {
+/*
+            min: -100,
+            max: 1000
+*/
+          }
+        },
+/* not supported yet
+        grid: {
+          x: {
+            show: true
+          },
+          y: {
+            show: true
+          }
+        }
+*/
+      }); }, chart;
+
+    function run() {
+
+      chart = generate();
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['x', '2013-01-21'],
+            ['data1', 500],
+            ['data3', 200],
+          ],
+          duration: 1500
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['x', '2013-02-01', '2013-02-08', '2013-02-15'],
+            ['data1', 200, 400, 300],
+            ['data2', 100, 300, 200],
+            ['data3', 100, 200, 50]
+          ],
+          length: 1,
+          duration: 1500
+        });
+      }, 4000);
+
+      setTimeout(function () {
+        console.log("Flow 1");
+        chart.flow({
+          columns: [
+            ['x', '2013-03-01', '2013-03-08'],
+            ['data1', 200, 500],
+            ['data2', 300, 400],
+            ['data3', 400, 200]
+          ],
+          to: '2013-02-08',
+          duration: 1500
+        });
+      }, 7000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['x', '2013-03-15', '2013-05-01'],
+            ['data1', 200, 500],
+            ['data2', 300, 400],
+            ['data3', 400, 200]
+          ],
+          length: 0,
+          duration: 1500
+        });
+      }, 10000);
+
+      setTimeout(function () {
+        chart = generate();
+      }, 14000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['x', '2013-01-21', '2013-01-25', '2013-01-26'],
+            ['data1', 500, 300, 100],
+            ['data3', 200, 150, null],
+          ],
+          duration: 1500
+        });
+      }, 15000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['x', '2013-02-01'],
+            ['data1', 200],
+            ['data2', 100],
+            ['data3', 100]
+          ],
+          length: 0,
+          duration: 1500
+        });
+      }, 18000);
+
+      setTimeout(function () {
+        chart.flow({
+          columns: [
+            ['x', '2013-03-01'],
+            ['data1', 200],
+            ['data2', 300],
+            ['data3', 400]
+          ],
+          to: '2013-02-01',
+          duration: 1500
+        });
+      }, 21000);
+    };
+
+    run();
+
+    setTimeout(function () {
+      padding = {left: 0, right: 0};
+      run();
+    }, 25000);
+
+    setTimeout(function () {
+      types = {
+        data2: 'area',
+        data3: 'bar',
+      }
+      run();
+    }, 50000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/api_legend.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var columns = [];
+      for (var i = 0; i < 5; i++ ) {
+        columns[i] = ['datahogehogeohgeohoge' + i, 10 * i, 20 * i, 30 * i];
+      }
+
+      var chart = c3.generate({
+        data: {
+          columns: columns,
+        },
+        axis: {
+          x: {
+            type: 'category'
+          }
+        }
+      });
+
+      setTimeout(function () {
+        chart.legend.hide();
+      }, 1000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: columns,
+          },
+          axis: {
+            x: {
+              type: 'category'
+            }
+          },
+          legend: {
+            position: 'right'
+          }
+        });
+      }, 2000);
+
+      setTimeout(function () {
+        chart.legend.hide();
+      }, 3000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: columns,
+          },
+          axis: {
+            rotated: true
+          }
+        });
+      }, 4000);
+
+      setTimeout(function () {
+        chart.legend.hide();
+      }, 5000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: columns,
+          },
+          legend: {
+            position: 'right'
+          },
+          axis: {
+            rotated: true
+          }
+        });
+      }, 6000);
+
+      setTimeout(function () {
+        chart.legend.hide();
+      }, 7000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: columns,
+          },
+          legend: {
+            show: false
+          }
+        });
+      }, 8000);
+
+      setTimeout(function () {
+        chart.legend.show();
+      }, 9000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: columns,
+          },
+          legend: {
+            show: false
+          },
+          axis: {
+            rotated: true
+          }
+        });
+      }, 10000);
+
+      setTimeout(function () {
+        chart.legend.show();
+      }, 11000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: columns,
+          },
+          legend: {
+            position: 'right',
+            show: false
+          }
+        });
+      }, 12000);
+
+      setTimeout(function () {
+        chart.legend.show();
+      }, 13000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/api_tooltip_show.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+        }
+      });
+
+      setTimeout(function () {
+        chart.tooltip.show({ x: 1 });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.tooltip.show({ index: 3 });
+      }, 2000);
+
+      setTimeout(function () {
+        chart.tooltip.show({ data: {x: 2} });
+      }, 3000);
+
+      setTimeout(function () {
+        chart.tooltip.hide();
+      }, 4000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/api_transform.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+        },
+      });
+
+      setTimeout(function () {
+        chart.transform('bar');
+      }, 1000);
+
+      setTimeout(function () {
+        chart.transform('pie');
+      }, 2000);
+
+      setTimeout(function () {
+        chart.transform('donut');
+      }, 3000);
+
+      setTimeout(function () {
+        chart.transform('area');
+      }, 4000);
+
+      setTimeout(function () {
+        chart.transform('spline');
+      }, 5000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            columns: [
+              ['data1', 30, 200, 100, 400, 150, 250],
+              ['data2', 50, 20, 10, 40, 15, 25],
+              ['data1_x', 50, 20, 10, 40, 15, 25],
+              ['data2_x', 30, 200, 100, 400, 150, 250],
+            ],
+            xs: {
+              data1: 'data1_x',
+              data2: 'data2_x',
+            },
+            type: 'scatter'
+          },
+        });
+      }, 7000);
+
+      setTimeout(function () {
+        chart.transform('pie');
+      }, 8000);
+
+      setTimeout(function () {
+        chart.transform('scatter');
+      }, 9000);
+
+
+    </script>
+  </body>
+</html>

htdocs/samples/api_xgrid_lines.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var axis_rotated = false, axis_x_type = "";
+
+      var generate = function () { return c3.generate({
+        bindto: '#chart',
+        data: {
+          columns: [
+            ['sample', 30, 200, 100, 400, 150, 250]
+          ]
+        },
+        axis: {
+          rotated: axis_rotated,
+          x: {
+            type: axis_x_type
+          }
+        },
+        grid: {
+          x: {
+//            lines: [{value: 3, text:'Label 3'}, {value: 4.5, text: 'Label 4.5'}]
+          }
+        }
+      }); }, chart = generate();
+
+      var queue = [
+      function () {
+        chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);
+      },
+      function () {
+        chart.xgrids([{value: 2, text:'Label 2'}]);
+      },
+      function () {
+        chart.xgrids.add([{value: 3, text:'Label 3', class:'hoge'}]);
+      },
+      function () {
+        chart.xgrids.remove({value:2});
+      },
+      function () {
+        chart.xgrids.remove({class:'hoge'});
+      },
+      function () {
+        chart.xgrids.remove([{value: 1}, {value: 4}]);
+      },
+      function () {
+        chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);
+      },
+      function () {
+        chart.xgrids.remove();
+      },
+      function () {
+        axis_rotated = true;
+        chart = generate();
+      },
+      function () {
+        chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);
+      },
+      function () {
+        chart.xgrids([{value: 2, text:'Label 2'}]);
+      },
+      function () {
+        chart.xgrids.add([{value: 3, text:'Label 3', class:'hoge'}]);
+      },
+      function () {
+        chart.xgrids.remove({value:2});
+      },
+      function () {
+        chart.xgrids.remove({class:'hoge'});
+      },
+      function () {
+        chart.xgrids.remove([{value: 1}, {value: 4}]);
+      },
+      function () {
+        chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);
+      },
+      function () {
+        chart.xgrids.remove();
+      },
+      function () {
+        axis_rotated = false;
+        axis_x_type = 'category';
+        chart = generate();
+      },
+      function () {
+        chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);
+      },
+      function () {
+        chart.xgrids([{value: 2, text:'Label 2'}]);
+      },
+      function () {
+        chart.xgrids.add([{value: 3, text:'Label 3', class:'hoge'}]);
+      },
+      function () {
+        chart.xgrids.remove({value:2});
+      },
+      function () {
+        chart.xgrids.remove({class:'hoge'});
+      },
+      function () {
+        chart.xgrids.remove([{value: 1}, {value: 4}]);
+      },
+      function () {
+        chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);
+      },
+      function () {
+        chart.xgrids.remove();
+      },
+      ];
+
+      var i = 0;
+      queue.forEach(function (f) {
+        setTimeout(f, 1000 * i++);
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/grid_y_lines.html → htdocs/samples/api_ygrid_lines.html

@@ -20,21 +20,21 @@
         },
         grid: {
           y: {
-            lines: [{value: 30, text:'Lable 30'}, {value: 250, text: 'Lable 250'}]
+//            lines: [{value: 30, text:'Label 30'}, {value: 250, text: 'Label 250'}]
           }
         }
       });
 
       setTimeout(function () {
-        chart.ygrids([{value: 130, text:'Lable 130'}, {value: 50, text: 'Lable 50'}]);
+        chart.ygrids([{value: 130, text:'Label 130'}, {value: 50, text: 'Label 50'}]);
       }, 1000);
 
       setTimeout(function () {
-        chart.ygrids([{value: 130, text:'Lable 130', class: 'hoge'}]);
+        chart.ygrids([{value: 130, text:'Label 130', class: 'hoge'}]);
       }, 2000);
 
       setTimeout(function () {
-        chart.ygrids.add([{value: 230, text:'Lable 230'}]);
+        chart.ygrids.add([{value: 230, text:'Label 230', class: 'hoge'}]);
       }, 3000);
 
       setTimeout(function () {

htdocs/samples/area_zerobased.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 1030, 1200, 1100, 1400, 1150, 1250],
+            ['data2', 2130, 2100, 2140, 2200, 2150, 1850]
+          ],
+          type: 'area',
+        },
+        area: {
+          zerobased: false
+        }
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/axes_padding.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 300, 2000, 1000, 4000, 1500, 2500],
+          ],
+          axes: {
+            data2: 'y2'
+          }
+        },
+        axis: {
+          y: {
+            padding: {
+              top: 0.1,
+              bottom: 0.1,
+              unit: 'ratio'
+            }
+          },
+          y2: {
+            show: true,
+            padding: {
+              top: 200,
+              bottom: 200,
+            }
+          }
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', 3000, 20000, 10000, 40000, 15000, 25000],
+          ],
+        },
+        axis: {
+          y: {
+            padding: {
+              top: 0.1,
+              bottom: 0.1,
+              unit: 'ratio'
+            }
+          }
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/axes_range.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['sample', 100, 200, 100, 400, 150, 250]
+          ],
+        },
+        axis: {
+          x: {
+              min: -10,
+              max: 10,
+            }
+          },
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          x: 'x',
+          columns: [
+            ['x', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-04', '2013-01-05', '2013-01-06'],
+            ['sample', 100, 200, 100, 400, 150, 250]
+          ],
+        },
+        axis: {
+          x: {
+              type: 'timeseries',
+              min: new Date('2012-12-20'),
+              max: '2013-03-01',
+              tick : {
+                format : "%Y-%m-%d %H:%M:%S" // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
+              }
+            }
+          }
+      });
+
+      setTimeout(function () {
+        chart1.axis.max({x: 20});
+      }, 1000);
+
+      setTimeout(function () {
+        chart1.axis.min({x: -5});
+      }, 2000);
+
+      setTimeout(function () {
+        chart1.axis.range({max: {x: 5}, min: {x: 0}});
+      }, 3000);
+
+      setTimeout(function () {
+        chart2.axis.max({x: new Date('2013-02-01')});
+      }, 1000);
+
+      setTimeout(function () {
+        chart2.axis.min({x: new Date('2012-12-01')});
+      }, 2000);
+
+      setTimeout(function () {
+      chart2.axis.range({max: {x: '2013-01-06'}, min: {x: '2013-01-01'}});
+      }, 3000);
+
+      setTimeout(function () {
+        chart2.axis.max({y: 1000});
+      }, 4000);
+
+      setTimeout(function () {
+        chart2.axis.min({y: -1000});
+      }, 5000);
+
+      setTimeout(function () {
+        chart2.axis.range({max: {y: 400}, min: {y: 0}});
+      }, 6000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/axes_x_localtime.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var data, axis_x_localtime;
+
+      var data1 = {
+          x : 'date',
+          columns: [
+            ['date', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-04', '2013-01-05'],
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+      };
+
+      var data2 = {
+          x : 'date',
+          columns: [
+            ['date', 1356966000000, 1357052400000, 1357138800000, 1357225200000, 1357311600000],
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+      };
+
+      var data3 = {
+          x : 'date',
+          columns: [
+            ['date', new Date(1356966000000), new Date(1357052400000), new Date(1357138800000), new Date(1357225200000), new Date(1357311600000)],
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+      };
+
+      var data4 = {
+          x : 'date',
+          x_format : '%Y%m%d',
+          columns: [
+            ['date', '20130101', '20130102', '20130103', '20130104', '20130105'],
+            ['sample', 1030, 1200, 1100, 1400, 1150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+      };
+
+      var data5 = {
+          x : 'date',
+          x_format : '%Y%m%d %H:%M:%S',
+          columns: [
+            ['date', '20130101 00:00:00', '20130102 00:00:00', '20130103 00:00:00', '20130104 00:00:00', '20130105 00:00:00'],
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 1130, 1300, 1200, 1450, 1250]
+          ]
+      };
+
+      var generate = function () { return c3.generate({
+        bindto: '#chart',
+        data: data,
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+              format : "%Y-%m-%d %H:%M:%S" // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
+            },
+            localtime: axis_x_localtime
+          }
+        }
+      }); };
+
+      setTimeout(function () {
+        data = data1;
+        axis_x_localtime = true;
+        chart = generate();
+      }, 1000);
+
+      setTimeout(function () {
+        data = data1;
+        axis_x_localtime = false;
+        chart = generate();
+      }, 2000);
+
+      setTimeout(function () {
+        data = data2;
+        axis_x_localtime = true;
+        chart = generate();
+      }, 3000);
+
+      setTimeout(function () {
+        data = data2;
+        axis_x_localtime = false;
+        chart = generate();
+      }, 4000);
+
+      setTimeout(function () {
+        data = data3;
+        axis_x_localtime = true;
+        chart = generate();
+      }, 5000);
+
+      setTimeout(function () {
+        data = data3;
+        axis_x_localtime = false;
+        chart = generate();
+      }, 6000);
+
+      setTimeout(function () {
+        data = data4;
+        axis_x_localtime = true;
+        chart = generate();
+      }, 7000);
+
+      setTimeout(function () {
+        data = data4;
+        axis_x_localtime = false;
+        chart = generate();
+      }, 8000);
+
+      setTimeout(function () {
+        data = data5;
+        axis_x_localtime = true;
+        chart = generate();
+      }, 9000);
+
+      setTimeout(function () {
+        data = data5;
+        axis_x_localtime = false;
+        chart = generate();
+      }, 10000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/axes_x_range_timeseries.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+    var chart1 = c3.generate({
+      "bindto": "#chart1",
+      "axis": {
+          "x": {
+            "type": "timeseries",
+            "min": 1401879600000,
+            "max": 1401969600000,
+          }
+      },
+      "data": {
+        "type": "line",
+        "columns": [
+            ["epoch", 1401879600000, 1401883200000, 1401886800000],
+            ["y", 1955, 2419, 2262]
+        ],
+        "xs": {
+            "y": "epoch"
+        }
+      }
+    });
+
+    var chart2 = c3.generate({
+      "bindto": "#chart2",
+      "axis": {
+          "x": {
+            "type": "timeseries",
+            "min": new Date(1401879600000),
+            "max": new Date(1401969600000),
+          }
+      },
+      "data": {
+        "type": "line",
+        "columns": [
+            ["epoch", 1401879600000, 1401883200000, 1401886800000],
+            ["y", 1955, 2419, 2262]
+        ],
+        "xs": {
+            "y": "epoch"
+        }
+      }
+    });
+
+    </script>
+  </body>
+</html>

htdocs/samples/simple_multiple.html → htdocs/samples/axes_x_tick_culling.html

@@ -15,6 +15,15 @@
             ['data2', 50, 20, 10, 40, 15, 25]
           ]
         },
+        axis: {
+          x: {
+            tick: {
+              culling: {
+                max: 2
+              }
+            }
+          }
+        },
         tooltip: {
 //          enabled: false
         },

htdocs/samples/axes_x_tick_rotate.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250, 100, 600],
+            ['data2', 50, 20, 10, 40, 15, 25],
+          ]
+        },
+        axis: {
+//          rotated: true,
+          x: {
+            tick: {
+              format: function () { return "hogehogehogehogehoge"; },
+              rotate: 30,
+            },
+            label: {
+              text: 'Hogehoge',
+              position: 'outer-middle'
+            },
+            height: 90,
+          },
+          y: {
+            label: {
+              text: 'Y Label',
+              position: 'outer-center'
+            }
+          }
+        },
+        subchart: {
+          show: true
+        }
+      });
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+//            ['data1', 30, 200, 100, 400, 150, 250, 100, 400],
+            ['data1', 1030, 2000, 1000, 1400, 1500, 1250, 1100, 140000],
+          ]
+        })
+      }, 1000);
+
+
+    </script>
+  </body>
+</html>

htdocs/samples/axes_x_tick_values.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+        },
+        axis: {
+          x : {
+            tick: {
+              values: [2, 4]
+            }
+          }
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          x : 'date',
+          xFormat : '%Y%m%d',
+          columns: [
+            ['date', '20130101', '20130102', '20130103', '20130104', '20130105', '20130106'],
+            ['sample', 30, 200, 100, 400, 150, 250],
+            ['sample2', 130, 300, 200, 450, 250, 350]
+          ]
+        },
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+              format : "%e %b %y", // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
+              values: ['20130103', '20130104']
+            }
+          }
+        }
+      });
+      
+
+    </script>
+  </body>
+</html>

htdocs/samples/selection_line.html → htdocs/samples/axes_y_default.html

@@ -9,17 +9,15 @@
     <script src="/js/c3.js"></script>
     <script>
       var chart = c3.generate({
-        bindto: '#chart',
         data: {
           columns: [
-            ['sample1', 30, 200, 100, 400, 150, 250],
-            ['sample2', 130, 300, 200, 500, 250, 350],
-            ['sample3', 230, 400, 300, 600, 350, 450]
+            ['data1'],
+            ['data2'],
           ],
-          selection: {
-            enabled: true,
-            grouped: true,
-            multiple: false
+        },
+        axis: {
+          y: {
+            default: [-100, 100]
           }
         }
       });

htdocs/samples/bar_zerobased.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 1030, 1200, 1100, 1400, 1150, 1250],
+            ['data2', 2130, 2100, 2140, 2200, 2150, 1850]
+          ],
+          type: 'bar',
+        },
+        bar: {
+          zerobased: false
+        }
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/bindto.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1" style="height:300px;"></div>
+    <div class="chart2" style="height:150px;"></div>
+    <div class="chart3" style="height:150px;"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 130, 210, 120, 440, 250, 350]
+          ]
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '.chart2',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250]
+          ]
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: document.getElementsByClassName('chart3')[0],
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250]
+          ]
+        }
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/categorized.html

@@ -3,14 +3,19 @@
     <link href="/css/c3.css" rel="stylesheet" type="text/css">
   </head>
   <body>
-    <div id="chart"></div>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
-      var chart = c3.generate({
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
         data: {
+          x: 'x',
           columns: [
+            ['x', '1e-3', '1e-2', '1'],
             ['data1', 30, 200, 100, 400, 150, 250, 50, 100, 250]
           ]
         },
@@ -21,9 +26,28 @@
         }
       });
 
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250, 50, 100, 250]
+          ]
+        },
+        axis: {
+          x: {
+            categories: ['1e-3', '1e-2', '1e-1', '0', 'hoge'],
+            type: 'categorized'
+          }
+        }
+      });
+
+      setTimeout(function () {
+        chart1.load({columns:[['data2', 30, 20, 50, 40, 60, 50, 100, 200, 300,100]]});
+      }, 1000);
+
       setTimeout(function () {
-        chart.load({columns:[['data2', 30, 20, 50, 40, 60, 50, 100, 200, 300,100]]});
-      }, 500);
+        chart2.load({columns:[['data2', 30, 20, 50, 40, 60, 50, 100, 200, 300,100]]});
+      }, 2000);
 
     </script>
   </body>

htdocs/samples/chart_area.html

@@ -3,23 +3,86 @@
     <link href="/css/c3.css" rel="stylesheet" type="text/css">
   </head>
   <body>
-    <div id="chart"></div>
+    <h3>Zerobased</h3>
+    <div id="chart1"></div>
+    <h3>Not zerobased because of axis.y.min</h3>
+    <div id="chart2"></div>
+    <h3>Zerobased</h3>
+    <div id="chart3"></div>
+    <h3>Not zerobased because of axis.y.min</h3>
+    <div id="chart4"></div>
+    <h3>+/- vaulues</h3>
+    <div id="chart5"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
-      var chart = c3.generate({
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 0],
+            ['data2', 130, 100, 140, 200, 150, 50]
+          ],
+          type: 'area'
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
         data: {
           columns: [
             ['data1', 300, 350, 300, 0, 0, 0],
             ['data2', 130, 100, 140, 200, 150, 50]
           ],
-          types: {
-            data1: 'area',
-            data2: 'area-spline'
+          type: 'area'
+        },
+        axis: {
+          y: {
+            min: 100,
+          }
+        },
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, 0],
+            ['data2', -130, -100, -140, -200, -150, -50]
+          ],
+          type: 'area'
+        }
+      });
+
+      var chart4 = c3.generate({
+        bindto: '#chart4',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, 0],
+            ['data2', -130, -100, -140, -200, -150, -50]
+          ],
+          type: 'area'
+        },
+        axis: {
+          y: {
+            max: -100,
           }
         }
       });
+
+      var chart5 = c3.generate({
+        bindto: '#chart5',
+        data: {
+          columns: [
+            ['data1', -300, 350, -300, 0, 0, 0],
+            ['data2', -130, -100, 140, -200, 150, -50]
+          ],
+          type: 'area'
+        }
+      });
+
     </script>
   </body>
 </html>

htdocs/samples/chart_area_spline.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 0],
+            ['data2', 130, 100, 140, 200, 150, 50]
+          ],
+          type: 'area-spline'
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, 0],
+            ['data2', -130, -100, -140, -200, -150, -50]
+          ],
+          type: 'area-spline'
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -300, 350, -300, 0, 0, 0],
+            ['data2', -130, -100, 140, -200, 150, -50]
+          ],
+          type: 'area-spline'
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_area_spline_stacked.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 100],
+            ['data2', 130, 0, 140, 200, 0, 50],
+          ],
+          type: 'area-spline',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, -100],
+            ['data2', -130, 0, -140, -200, 0, -50]
+          ],
+          type: 'area-spline',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -300, 350, -300, 0, 0, 100],
+            ['data2', -130, 0, 140, -200, 150, -50]
+          ],
+          type: 'area-spline',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_area_stacked.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 100],
+            ['data2', 130, 0, 140, 200, 0, 50],
+          ],
+          type: 'area',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, -100],
+            ['data2', -130, 0, -140, -200, 0, -50]
+          ],
+          type: 'area',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -300, 350, -300, 0, 0, 100],
+            ['data2', -130, 0, 140, -200, 150, -50]
+          ],
+          type: 'area',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_area_step.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 0],
+            ['data2', 130, 100, 140, 200, 150, 50]
+          ],
+          type: 'area-step'
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, 0],
+            ['data2', -130, -100, -140, -200, -150, -50]
+          ],
+          type: 'area-step'
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -300, 350, -300, 0, 0, 0],
+            ['data2', -130, -100, 140, -200, 150, -50]
+          ],
+          type: 'area-step'
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_area_step_stacked.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 0],
+            ['data2', 130, 100, 140, 200, 150, 50]
+          ],
+          type: 'area-step',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', -300, -350, -300, 0, 0, 0],
+            ['data2', -130, -100, -140, -200, -150, -50]
+          ],
+          type: 'area-step',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -300, 350, -300, 0, 0, 0],
+            ['data2', -130, -100, 140, -200, 150, -50]
+          ],
+          type: 'area-step',
+          groups: [['data1', 'data2']],
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_bar.html

@@ -11,13 +11,15 @@
       var chart = c3.generate({
         data: {
           columns: [
-            ['data1', 30, 200, 100, 400, 150, 250],
-            ['data2', 130, 100, 140, 200, 150, 50]
+            ['data1', 1030, 1200, 1100, 1400, 1150, 1250],
+            ['data2', 2130, 2100, 2140, 2200, 2150, 1850]
+//           ['data1', 30, 200, 100, 400, 150, 250],
+//           ['data2', 130, 100, 140, 200, 150, 50]
           ],
           type: 'bar',
           onclick: function (d, element) { console.log("onclick", d, element); },
-          onenter: function (d) { console.log("onenter", d); },
-          onleave: function (d) { console.log("onleave", d); }
+          onmouseover: function (d) { console.log("onmouseover", d); },
+          onmouseout: function (d) { console.log("onmouseout", d); }
         },
         axis: {
           x: {
@@ -26,8 +28,9 @@
         },
         bar: {
           width: {
-            ratio: 0.3
-          }
+            ratio: 0.3,
+//            max: 30
+          },
         }
       });
     </script>

htdocs/samples/chart_bar_stacked.html

@@ -8,12 +8,16 @@
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
-      var chart = c3.generate({
+
+      var axis_x_type = 'category',
+          axis_rotated = false;
+
+      var generate = function () { return c3.generate({
         data: {
           columns: [
             ['data1', 30, 200, 200, 400, 150, -250],
             ['data2', 130, -100, 100, 200, 150, 50],
-            ['data3', 230, -200, 200, 300, 250, 250]
+            ['data3', 230, -200, 200, 0, 250, 250]
           ],
           type: 'bar',
           groups: [
@@ -22,39 +26,65 @@
         },
         axis: {
           x: {
-            type: 'categorized'
+            type: axis_x_type
           },
-//          rotated: true
+          rotated: axis_rotated
         },
         grid: {
           y: {
             lines: [{value:0}]
           }
         },
-        zoom: {
-//          enabled: true
-        },
-        subchart: {
-//          show: true
-        },
-        tooltip: {
-//          enabled: false
-        }
-      });
+      }); }, chart = generate();
 
-      setTimeout(function () {
+      function update1() {
         chart.groups([['data1', 'data2', 'data3']])
-      }, 500);
+      }
 
-      setTimeout(function () {
+      function update2() {
         chart.load({
           columns: [['data4', 100, 50, 150, -200, 300, -100]]
         });
-      }, 1000);
+      }
 
-      setTimeout(function () {
+      function update3() {
         chart.groups([['data1', 'data2', 'data3', 'data4']])
-      }, 1500);
+      }
+
+
+      setTimeout(update1, 1000);
+      setTimeout(update2, 2000);
+      setTimeout(update3, 3000);
+
+
+      setTimeout(function () {
+        axis_rotated = true;
+        chart = generate();
+      }, 4000);
+      setTimeout(update1, 5000);
+      setTimeout(update2, 6000);
+      setTimeout(update3, 7000);
+
+
+      setTimeout(function () {
+        axis_x_type = '';
+        axis_rotated = false;
+        chart = generate();
+      }, 8000);
+      setTimeout(update1, 9000);
+      setTimeout(update2, 10000);
+      setTimeout(update3, 11000);
+
+
+      setTimeout(function () {
+        axis_x_type = '';
+        axis_rotated = true;
+        chart = generate();
+      }, 12000);
+      setTimeout(update1, 13000);
+      setTimeout(update2, 14000);
+      setTimeout(update3, 15000);
+
 
     </script>
   </body>

htdocs/samples/donut.html → htdocs/samples/chart_donut.html

@@ -10,24 +10,19 @@
     <script>
       var chart = c3.generate({
         data: {
-          xs: {
-            setosa: 'setosa_x',
-            versicolor: 'versicolor_x',
-            virginica: 'virginica_x'
-          },
           columns: [
-            ["setosa_x", 3.5, 3.0, 3.2, 3.1, 3.6, 3.9, 3.4, 3.4, 2.9, 3.1, 3.7, 3.4, 3.0, 3.0, 4.0, 4.4, 3.9, 3.5, 3.8, 3.8, 3.4, 3.7, 3.6, 3.3, 3.4, 3.0, 3.4, 3.5, 3.4, 3.2, 3.1, 3.4, 4.1, 4.2, 3.1, 3.2, 3.5, 3.6, 3.0, 3.4, 3.5, 2.3, 3.2, 3.5, 3.8, 3.0, 3.8, 3.2, 3.7, 3.3],
-            ["versicolor_x", 3.2, 3.2, 3.1, 2.3, 2.8, 2.8, 3.3, 2.4, 2.9, 2.7, 2.0, 3.0, 2.2, 2.9, 2.9, 3.1, 3.0, 2.7, 2.2, 2.5, 3.2, 2.8, 2.5, 2.8, 2.9, 3.0, 2.8, 3.0, 2.9, 2.6, 2.4, 2.4, 2.7, 2.7, 3.0, 3.4, 3.1, 2.3, 3.0, 2.5, 2.6, 3.0, 2.6, 2.3, 2.7, 3.0, 2.9, 2.9, 2.5, 2.8],
-            ["virginica_x", 3.3, 2.7, 3.0, 2.9, 3.0, 3.0, 2.5, 2.9, 2.5, 3.6, 3.2, 2.7, 3.0, 2.5, 2.8, 3.2, 3.0, 3.8, 2.6, 2.2, 3.2, 2.8, 2.8, 2.7, 3.3, 3.2, 2.8, 3.0, 2.8, 3.0, 2.8, 3.8, 2.8, 2.8, 2.6, 3.0, 3.4, 3.1, 3.0, 3.1, 3.1, 3.1, 2.7, 3.2, 3.3, 3.0, 2.5, 3.0, 3.4, 3.0],
-            ["setosa", 0.2, 0.2, 0.2, 0.2, 0.2, 0.4, 0.3, 0.2, 0.2, 0.1, 0.2, 0.2, 0.1, 0.1, 0.2, 0.4, 0.4, 0.3, 0.3, 0.3, 0.2, 0.4, 0.2, 0.5, 0.2, 0.2, 0.4, 0.2, 0.2, 0.2, 0.2, 0.4, 0.1, 0.2, 0.2, 0.2, 0.2, 0.1, 0.2, 0.2, 0.3, 0.3, 0.2, 0.6, 0.4, 0.3, 0.2, 0.2, 0.2, 0.2],
+//            ["setosa", 0.2, 0.2, 0.2, 0.2, 0.2, 0.4, 0.3, 0.2, 0.2, 0.1, 0.2, 0.2, 0.1, 0.1, 0.2, 0.4, 0.4, 0.3, 0.3, 0.3, 0.2, 0.4, 0.2, 0.5, 0.2, 0.2, 0.4, 0.2, 0.2, 0.2, 0.2, 0.4, 0.1, 0.2, 0.2, 0.2, 0.2, 0.1, 0.2, 0.2, 0.3, 0.3, 0.2, 0.6, 0.4, 0.3, 0.2, 0.2, 0.2, 0.2],
             ["versicolor", 1.4, 1.5, 1.5, 1.3, 1.5, 1.3, 1.6, 1.0, 1.3, 1.4, 1.0, 1.5, 1.0, 1.4, 1.3, 1.4, 1.5, 1.0, 1.5, 1.1, 1.8, 1.3, 1.5, 1.2, 1.3, 1.4, 1.4, 1.7, 1.5, 1.0, 1.1, 1.0, 1.2, 1.6, 1.5, 1.6, 1.5, 1.3, 1.3, 1.3, 1.2, 1.4, 1.2, 1.0, 1.3, 1.2, 1.3, 1.3, 1.1, 1.3],
             ["virginica", 2.5, 1.9, 2.1, 1.8, 2.2, 2.1, 1.7, 1.8, 1.8, 2.5, 2.0, 1.9, 2.1, 2.0, 2.4, 2.3, 1.8, 2.2, 2.3, 1.5, 2.3, 2.0, 2.0, 1.8, 2.1, 1.8, 1.8, 1.8, 2.1, 1.6, 1.9, 2.0, 2.2, 1.5, 1.4, 2.3, 2.4, 1.8, 1.8, 2.1, 2.4, 2.3, 1.9, 2.3, 2.5, 2.3, 1.9, 2.0, 2.3, 1.8],
-//            ["setosa", 30],
+            ["setosa", 30],
 //            ["versicolor", 40],
 //            ["virginica", 50],
           ],
           type : 'donut',
-//          type : 'pie',
+          onmouseover: function (d, i) { console.log("onmouseover", d, i, this); },
+          onmouseout: function (d, i) { console.log("onmouseout", d, i, this); },
+          onclick: function (d, i) { console.log("onclick", d, i, this); },
+          order: null // set null to disable sort of data. desc is the default.
         },
         axis: {
           x: {
@@ -42,9 +37,7 @@
 //            format: function (d, ratio) { return ""; }
           },
           title: "Iris Petal Width",
-          onmouseover: function (d, i) { console.log(d, i); },
-          onmouseout: function (d, i) { console.log(d, i); },
-          onclick: function (d, i) { console.log(d, i); },
+          width: 70
         }
       });
 
@@ -57,7 +50,9 @@
       }, 1000);
 
       setTimeout(function () {
-        chart.unload('virginica');
+        chart.unload({
+          ids: 'virginica'
+        });
       }, 2000);
 
     </script>

htdocs/samples/chart_gauge.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            [ 'data', 91.4 ]
+          ],
+          type: 'gauge',
+          onmouseover: function (d, i) { console.log("onmouseover", d, i, this); },
+          onmouseout: function (d, i) { console.log("onmouseout", d, i, this); },
+          onclick: function (d, i) { console.log("onclick", d, i, this); },
+        },
+        gauge: {
+          label: {
+//            format: function(value, ratio) {
+//              return value;
+//            },
+//          show: false // to turn off the min/max labels.
+          },
+//          min: 0, // 0 is default, //can handle negative min e.g. vacuum / voltage / current flow / rate of change
+//          max: 100, // 100 is default
+//          units: ' %',
+//          width: 39 // for adjusting arc thickness
+        },
+        color: {
+          pattern: ['#FF0000', '#F6C600', '#60B044'], // the three color levels for the percentage values.
+          threshold: {
+//            unit: 'value', // percentage is default
+//            max: 200, // 100 is default
+            values: [30, 60, 90] // alternate first value is 'value'
+          }
+        }
+      });
+
+      var cycleDemo = function () {
+
+        setTimeout(function () {
+          d3.select('#chart .c3-chart-arcs-background')
+            .transition()
+            .style('fill', '#333');
+        }, 1000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 10 ]]
+            });
+        }, 2000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 50 ]]
+            });
+        }, 3000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 91.4 ]]
+            });
+        }, 4000);
+
+        setTimeout(function () {
+          d3.select('#chart .c3-chart-arcs-background')
+            .transition()
+            .style('fill', '#e0e0e0');
+        }, 5000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 0 ]]
+            });
+        }, 6000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 50 ]]
+            });
+        }, 7000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 91.4 ]]
+            });
+        }, 8000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 0 ]]
+            });
+        }, 9000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 50 ]]
+            });
+        }, 10000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 91.4 ]]
+            });
+        }, 11000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 0 ]]
+            });
+        }, 12000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 50 ]]
+            });
+        }, 13000);
+
+        setTimeout(function () {
+            chart.load({
+              columns: [[ 'data', 91.4 ]]
+            });
+        }, 14000);
+
+      }
+
+      cycleDemo();
+
+//      setInterval(cycleDemo, 30000);
+    </script>
+  </body>
+</html>

htdocs/samples/pie.html → htdocs/samples/chart_pie.html

@@ -10,23 +10,18 @@
     <script>
       var chart = c3.generate({
         data: {
-          xs: {
-            setosa: 'setosa_x',
-            versicolor: 'versicolor_x',
-            virginica: 'virginica_x'
-          },
           columns: [
-            ["setosa_x", 3.5, 3.0, 3.2, 3.1, 3.6, 3.9, 3.4, 3.4, 2.9, 3.1, 3.7, 3.4, 3.0, 3.0, 4.0, 4.4, 3.9, 3.5, 3.8, 3.8, 3.4, 3.7, 3.6, 3.3, 3.4, 3.0, 3.4, 3.5, 3.4, 3.2, 3.1, 3.4, 4.1, 4.2, 3.1, 3.2, 3.5, 3.6, 3.0, 3.4, 3.5, 2.3, 3.2, 3.5, 3.8, 3.0, 3.8, 3.2, 3.7, 3.3],
-            ["versicolor_x", 3.2, 3.2, 3.1, 2.3, 2.8, 2.8, 3.3, 2.4, 2.9, 2.7, 2.0, 3.0, 2.2, 2.9, 2.9, 3.1, 3.0, 2.7, 2.2, 2.5, 3.2, 2.8, 2.5, 2.8, 2.9, 3.0, 2.8, 3.0, 2.9, 2.6, 2.4, 2.4, 2.7, 2.7, 3.0, 3.4, 3.1, 2.3, 3.0, 2.5, 2.6, 3.0, 2.6, 2.3, 2.7, 3.0, 2.9, 2.9, 2.5, 2.8],
-            ["virginica_x", 3.3, 2.7, 3.0, 2.9, 3.0, 3.0, 2.5, 2.9, 2.5, 3.6, 3.2, 2.7, 3.0, 2.5, 2.8, 3.2, 3.0, 3.8, 2.6, 2.2, 3.2, 2.8, 2.8, 2.7, 3.3, 3.2, 2.8, 3.0, 2.8, 3.0, 2.8, 3.8, 2.8, 2.8, 2.6, 3.0, 3.4, 3.1, 3.0, 3.1, 3.1, 3.1, 2.7, 3.2, 3.3, 3.0, 2.5, 3.0, 3.4, 3.0],
-            ["setosa", 0.2, 0.2, 0.2, 0.2, 0.2, 0.4, 0.3, 0.2, 0.2, 0.1, 0.2, 0.2, 0.1, 0.1, 0.2, 0.4, 0.4, 0.3, 0.3, 0.3, 0.2, 0.4, 0.2, 0.5, 0.2, 0.2, 0.4, 0.2, 0.2, 0.2, 0.2, 0.4, 0.1, 0.2, 0.2, 0.2, 0.2, 0.1, 0.2, 0.2, 0.3, 0.3, 0.2, 0.6, 0.4, 0.3, 0.2, 0.2, 0.2, 0.2],
+//            ["setosa", 0.2, 0.2, 0.2, 0.2, 0.2, 0.4, 0.3, 0.2, 0.2, 0.1, 0.2, 0.2, 0.1, 0.1, 0.2, 0.4, 0.4, 0.3, 0.3, 0.3, 0.2, 0.4, 0.2, 0.5, 0.2, 0.2, 0.4, 0.2, 0.2, 0.2, 0.2, 0.4, 0.1, 0.2, 0.2, 0.2, 0.2, 0.1, 0.2, 0.2, 0.3, 0.3, 0.2, 0.6, 0.4, 0.3, 0.2, 0.2, 0.2, 0.2],
             ["versicolor", 1.4, 1.5, 1.5, 1.3, 1.5, 1.3, 1.6, 1.0, 1.3, 1.4, 1.0, 1.5, 1.0, 1.4, 1.3, 1.4, 1.5, 1.0, 1.5, 1.1, 1.8, 1.3, 1.5, 1.2, 1.3, 1.4, 1.4, 1.7, 1.5, 1.0, 1.1, 1.0, 1.2, 1.6, 1.5, 1.6, 1.5, 1.3, 1.3, 1.3, 1.2, 1.4, 1.2, 1.0, 1.3, 1.2, 1.3, 1.3, 1.1, 1.3],
             ["virginica", 2.5, 1.9, 2.1, 1.8, 2.2, 2.1, 1.7, 1.8, 1.8, 2.5, 2.0, 1.9, 2.1, 2.0, 2.4, 2.3, 1.8, 2.2, 2.3, 1.5, 2.3, 2.0, 2.0, 1.8, 2.1, 1.8, 1.8, 1.8, 2.1, 1.6, 1.9, 2.0, 2.2, 1.5, 1.4, 2.3, 2.4, 1.8, 1.8, 2.1, 2.4, 2.3, 1.9, 2.3, 2.5, 2.3, 1.9, 2.0, 2.3, 1.8],
-//            ["setosa", 30],
+            ["setosa", 30],
 //            ["versicolor", 40],
 //            ["virginica", 50],
           ],
           type : 'pie',
+          onmouseover: function (d, i) { console.log("onmouseover", d, i, this); },
+          onmouseout: function (d, i) { console.log("onmouseout", d, i, this); },
+          onclick: function (d, i) { console.log("onclick", d, i, this); },
         },
         axis: {
           x: {
@@ -35,26 +30,21 @@
           y: {
             label: 'Petal.Width'
           }
-        },
-        pie: {
-          onmouseover: function (d, i) { console.log(d, i); },
-          onmouseout: function (d, i) { console.log(d, i); },
-          onclick: function (d, i) { console.log(d, i); },
         }
       });
 
       setTimeout(function () {
-      console.log("== LOAD ==");
         chart.load({
           columns: [
-            ["setosa", 30],
+            ["setosa", 130],
           ]
         });
       }, 1000);
 
       setTimeout(function () {
-      console.log("== UNLOAD ==");
-        chart.unload('virginica');
+        chart.unload({
+          ids: 'virginica'
+        });
       }, 2000);
 
     </script>

htdocs/samples/chart_pie_sort.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var sort = true;
+
+      var generate = function () { return c3.generate({
+        data: {
+          columns: [
+//            ["setosa", 0.2, 0.2, 0.2, 0.2, 0.2, 0.4, 0.3, 0.2, 0.2, 0.1, 0.2, 0.2, 0.1, 0.1, 0.2, 0.4, 0.4, 0.3, 0.3, 0.3, 0.2, 0.4, 0.2, 0.5, 0.2, 0.2, 0.4, 0.2, 0.2, 0.2, 0.2, 0.4, 0.1, 0.2, 0.2, 0.2, 0.2, 0.1, 0.2, 0.2, 0.3, 0.3, 0.2, 0.6, 0.4, 0.3, 0.2, 0.2, 0.2, 0.2],
+            ["versicolor", 1.4, 1.5, 1.5, 1.3, 1.5, 1.3, 1.6, 1.0, 1.3, 1.4, 1.0, 1.5, 1.0, 1.4, 1.3, 1.4, 1.5, 1.0, 1.5, 1.1, 1.8, 1.3, 1.5, 1.2, 1.3, 1.4, 1.4, 1.7, 1.5, 1.0, 1.1, 1.0, 1.2, 1.6, 1.5, 1.6, 1.5, 1.3, 1.3, 1.3, 1.2, 1.4, 1.2, 1.0, 1.3, 1.2, 1.3, 1.3, 1.1, 1.3],
+            ["virginica", 2.5, 1.9, 2.1, 1.8, 2.2, 2.1, 1.7, 1.8, 1.8, 2.5, 2.0, 1.9, 2.1, 2.0, 2.4, 2.3, 1.8, 2.2, 2.3, 1.5, 2.3, 2.0, 2.0, 1.8, 2.1, 1.8, 1.8, 1.8, 2.1, 1.6, 1.9, 2.0, 2.2, 1.5, 1.4, 2.3, 2.4, 1.8, 1.8, 2.1, 2.4, 2.3, 1.9, 2.3, 2.5, 2.3, 1.9, 2.0, 2.3, 1.8],
+            ["setosa", 30],
+//            ["versicolor", 40],
+//            ["virginica", 50],
+          ],
+          type : 'pie',
+        },
+        axis: {
+          x: {
+            label: 'Sepal.Width'
+          },
+          y: {
+            label: 'Petal.Width'
+          }
+        },
+        pie: {
+          sort: sort,
+          onmouseover: function (d, i) { console.log(d, i); },
+          onmouseout: function (d, i) { console.log(d, i); },
+          onclick: function (d, i) { console.log(d, i); },
+        }
+      }); }, chart = generate();
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ["setosa", 130],
+          ]
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.unload({
+          ids: 'virginica'
+        });
+      }, 2000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ["new data", 300],
+          ]
+        });
+      }, 3000);
+
+      setTimeout(function () {
+        sort = false;
+        chart = generate();
+      }, 4000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ["setosa", 130],
+          ]
+        });
+      }, 5000);
+
+      setTimeout(function () {
+        chart.unload({
+          ids: 'virginica'
+        });
+      }, 6000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ["new data", 300],
+          ]
+        });
+      }, 7000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/scatter.html → htdocs/samples/chart_scatter.html

@@ -27,7 +27,10 @@
         },
         axis: {
           x: {
-            label: 'Sepal.Width'
+            label: 'Sepal.Width',
+            tick: {
+              fit: false
+            }
           },
           y: {
             label: 'Petal.Width'

htdocs/samples/chart_step.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 0],
+//            ['data2', 130, 100, 140, 200, 150, 50]
+          ],
+          types: {
+            data1: 'step',
+            data2: 'area-step'
+          },
+          onclick: function (d) { console.log('clicked', d); }
+        },
+        subchart: {
+          show: true
+        },
+      });
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['data2', 130, 100, 140, 200, 150, 50]
+          ]
+        });
+      }, 1000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_step_category.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          x: 'x',
+          columns: [
+            ['x', 'hogehoge', 'aaa', 'aaaaaa', 'a', 'b'],
+            ['data1', 300, 350, 300, 0, 0, 0],
+//            ['data2', 130, 100, 140, 200, 150, 50]
+          ],
+          types: {
+            data1: 'step',
+            data2: 'area-step'
+          },
+          empty: {
+            abort: false,
+            label: {
+              text: 'hoge'
+            }
+          }
+        },
+        axis: {
+          x: {
+            type: 'categorized'
+          }
+        },
+        subchart: {
+          show: true
+        },
+      });
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['data2', 130, 100, 140, 200, 150, 50]
+          ]
+        });
+      }, 1000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/custom_x_scale.html

@@ -20,8 +20,8 @@
           selection: {
             enabled: true
           },
-          onenter: function (d) { console.log("onenter", d); },
-          onleave: function (d) { console.log("onleave", d); }
+          onmouseover: function (d) { console.log("onmouseover", d); },
+          onmouseout: function (d) { console.log("onmouseout", d); }
         },
       });
 
@@ -36,6 +36,24 @@
       setTimeout(function () {
         chart.x([200, 210, 350, 400, 550, 750]);
       }, 2000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['data3', 300, 410, 350, 400, 500, 350],
+          ]
+        });
+      }, 3000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['x', 130, 140, 200, 300, 450, 550],
+            ['sample', 200, 350, 100, 200, 50, 100]
+          ]
+        })
+      }, 4000);
+
     </script>
   </body>
 </html>

htdocs/samples/custom_xs_scale.html

@@ -24,26 +24,41 @@
           selection: {
             enabled: true
           },
-          onenter: function (d) { console.log("onenter", d); },
-          onleave: function (d) { console.log("onleave", d); }
-        },
+          onclick: function (d) { console.log("onclick", d); },
+          onmouseover: function (d) { console.log("onmouseover", d); },
+          onmouseout: function (d) { console.log("onmouseout", d); }
+        }
       });
 
       setTimeout(function () {
         chart.load({
           columns: [
-            ['data1', 100, 210, 150, 200, null, 150],
+            ['data1', 100, 210, 150, null, 200, 150],
             ['data2', 200, 310, 50, 400, 120, 250, 10],
           ]
         });
       }, 1000);
 
       setTimeout(function () {
-        chart.xs({
-          'data1': [200, 210, 350, 400, 600, 750]
-//          'data2': [200, 210, 350, 400, 550, 750, 900]
+        chart.load({
+          columns: [
+            ['x2', 150, 220, 230, 400, 540, 600, 800],
+            ['data2', 200, 310, 50, 400, 120, 250, 10],
+            ['data3', 300, 410, 350, 600, 420, 550, 310],
+          ],
+          xs: {
+            data3: 'x2'
+          }
         });
       }, 2000);
+
+      setTimeout(function () {
+        chart.xs({
+          'data1': [200, 210, 350, 400, 600, 750],
+          'data2': [200, 210, 350, 400, 550, 750, 900]
+        });
+      }, 3000);
+
     </script>
   </body>
 </html>

htdocs/samples/data_hide.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.min.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 30, 20, 50, 40, 60, 50],
+            ['data2', 200, 130, 90, 240, 130, 220],
+            ['data3', 300, 200, 160, 400, 250, 250]
+          ],
+//          hide: ['data1', 'data3']
+          hide: true // hide all data
+        }
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/data_json.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart = c3.generate({
+        data: {
+          json: {
+            data1: [30, 20, 50, 40, 60, 50],
+            data2: [200, 130, 90, 240, 130, 220],
+            data3: [300, 200, 160, 400, 250, 250]
+          }
+        }
+      });
+
+    setTimeout(function () {
+      chart = c3.generate({
+        data: {
+          json: [{
+            "date": "2014-06-03",
+             "443": "3000",
+             "995": "500"
+          }, {
+            "date": "2014-06-04",
+             "443": "1000",
+          }, {
+            "date": "2014-06-05",
+             "443": "5000",
+             "995": "1000"
+          }],
+          keys: {
+            x: 'date',
+            value: [ "443", "995" ]
+          }
+        },
+        axis: {
+          x: {
+            type: "category"
+          }
+        }
+      });
+    }, 1000);
+
+    setTimeout(function () {
+      chart = c3.generate({
+        data: {
+//          x: 'name',
+          json: [
+            { id: 1, name: 'abc', visits: 200 },
+            { id: 2, name: 'efg', visits: 400 },
+            { id: 3, name: 'pqr', visits: 150 },
+            { id: 4, name: 'xyz', visits: 420 },
+          ],
+          keys: {
+            x: 'name',
+            value: ['visits'],
+          }
+        },
+        axis: {
+          x: {
+            type: 'categorized'
+          }
+        }
+      });
+    }, 2000);
+
+    setTimeout(function () {
+      chart.load({
+          json: [
+            { id: 1, name: 'abc', visits: 1200 },
+            { id: 2, name: 'efg', visits: 900 },
+            { id: 3, name: 'pqr', visits: 1150 },
+            { id: 4, name: 'xyz', visits: 1020 },
+          ],
+          keys: {
+            x: 'name',
+            value: ['visits'],
+          }
+      });
+    }, 3000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/data_label.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+    <div id="chart4"></div>
+    <div id="chart5"></div>
+    <div id="chart6"></div>
+    <div id="chart7"></div>
+    <div id="chart8"></div>
+    <div id="chart9" style="width:33%;"></div>
+    <div id="chart10"></div>
+    <div id="chart11"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: [
+            ['data1', 190, 200, 190, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', -190, -200, -190, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', -190, 200, 190, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        }
+      });
+
+      var chart4 = c3.generate({
+        bindto: '#chart4',
+        data: {
+          columns: [
+            ['data1', 190, 200, 190, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        },
+        axis: {
+          rotated: true
+        }
+      });
+
+      var chart5 = c3.generate({
+        bindto: '#chart5',
+        data: {
+          columns: [
+            ['data1', -190, -200, -190, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        },
+        axis: {
+          rotated: true
+        }
+      });
+
+      var chart6 = c3.generate({
+        bindto: '#chart6',
+        data: {
+          columns: [
+            ['data1', -190, 200, 190, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        },
+        axis: {
+          rotated: true
+        }
+      });
+
+      var chart7 = c3.generate({
+        bindto: '#chart7',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 500, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25],
+            ['data3', 250, 220, 210, 240, 215, 225]
+          ],
+          groups: [['data1', 'data2', 'data3']],
+          labels: true,
+          type: 'bar',
+        },
+        axis: {
+          rotated: true
+        }
+      });
+
+      var chart8 = c3.generate({
+        bindto: '#chart8',
+        data: {
+          columns: [
+            ['data1', -30, -200, -100, -500, -150, -250],
+            ['data2', -50, -20, -10, -40, -15, -25],
+            ['data3', -250, -220, -210, -240, -215, -225]
+          ],
+          groups: [['data1', 'data2', 'data3']],
+          labels: true,
+          type: 'bar',
+        },
+        axis: {
+          rotated: true
+        }
+      });
+
+      var chart9 = c3.generate({
+        bindto: '#chart9',
+        data: {
+          columns: [
+            ['data1', -19000000000000, 200, 19000000000000, null],
+          ],
+          type: 'bar',
+          labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+          }
+        },
+        axis: {
+          rotated: true
+        }
+      });
+
+      var chart10 = c3.generate({
+        bindto: '#chart10',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 100],
+            ['data2', 130, 0, 140, 200, 0, 50],
+            ['data3', 130, 0, 140, 200, 0, 50],
+            ['data4', 130, 0, 140, 200, 0, 50],
+          ],
+          type: 'area',
+          groups: [['data1', 'data2', 'data3', 'data4']],
+          labels: true
+        }
+      });
+
+      var chart11 = c3.generate({
+        bindto: '#chart11',
+        data: {
+          columns: [
+            ['data1', 300, 350, 300, 0, 0, 100],
+            ['data2', 130, 0, 140, 200, 0, 50],
+            ['data3', 130, 0, 140, 200, 0, 50],
+            ['data4', 130, 0, 140, 200, 0, 50],
+          ],
+          groups: [['data1', 'data2', 'data3', 'data4']],
+          labels: true
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/data_label_format.html

@@ -15,10 +15,10 @@
             ['data2', 50, 20, 10, 40, 15, 25]
           ],
           labels: {
-//            format: function (v) { return "Default Format"; },
+//            format: function (v, id) { return "Default Format on " + id; },
             format: {
-              y: function (v) { return "Y Format"; },
-              y2: function (v) { return "Y2 Format"; }
+              y: function (v, id) { return "Y Format on " + id; },
+              y2: function (v, id) { return "Y2 Format on " + id; }
             }
           },
           axes: {

htdocs/samples/data_load.html

@@ -8,10 +8,14 @@
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
         data: {
           url: '/data/c3_test.csv',
-          labels: true
+          labels: true,
+          filter: function (t) {
+            return t.id !== 'data1';
+          }
         },
         subchart: {
           show: true
@@ -20,75 +24,87 @@
           enabled: true
         },
         transition: {
-          duration: 200
+          duration: 500
         }
       });
 
-      setTimeout(function () {
+    var queue = [
+      function () {
         chart.load({
-          url: '/data/c3_test2.csv'
+          url: '/data/c3_test2.csv',
+          filter: function (t) {
+            return t.id !== 'data1';
+          }
         });
-      }, 1000);
-
-      setTimeout(function () {
-//        chart.unload(['data1', 'data2']);
-//        chart.unload('data1');
-        chart.unload('data2');
-      }, 2000);
-
-      setTimeout(function () {
-        chart.load({
-          columns: [
-            ['data1@test', 30, 20, 50, 40, 60, 50],
-          ],
-          unload: true,
-//          unload: ['data2', 'data3'],
-//          unload: ['data2']
-        });
-      }, 3000);
-
-      setTimeout(function () {
+      },
+      function () {
         chart.load({
           rows: [
-            ['data1@test', 'data2', 'data3'],
+            ['data4', 'data5', 'data6'],
             [90, 120, 300],
             [40, 160, 240],
             [50, 200, 290],
             [120, 160, 230],
             [80, 130, 300],
             [90, 220, 320],
+            [1090, 1220, 1320],
           ]
         });
-      }, 4000);
-
-      setTimeout(function () {
+      },
+      function () {
+        chart.unload({
+          ids: ['data4', 'data5']
+        });
+      },
+      function () {
+        chart.unload({
+          ids: 'data6'
+        });
+      },
+      function () {
         chart.load({
           columns:[
-            ['data1', 30, 20, 50, 40, 60, 50,100,200]
+            ['data1', 30, 20, 50, 40, 60, 50, 100, 200],
+            ['data7', 230, 220, 250, 240, 260, 250, 300, 400]
           ]
         });
-      }, 5000);
-
-      setTimeout(function () {
-        chart.unload('data1@test');
-      }, 6000);
-
-      setTimeout(function () {
+      },
+      function () {
         chart.load({
-          columns:[
-            ['data2', null, 30, 20, 50, 40, 60, 50]
-          ]
+          json: {
+            data1: [1030, 1020, 1050, 1040, 1060, 1050, 1100, 1200],
+            data7: [430, 420, 450, 440, 460, 550, 400, 200]
+          }
         });
-      }, 7000);
-
-      setTimeout(function () {
+      },
+      function () {
+        chart.load({
+          columns: [
+            ['data8', 30, 20, 50, 40, 60, 50],
+          ],
+          unload: true,
+        });
+      },
+      function () {
+        chart.load({
+          columns: [
+            ['data9', 130, 120, 150, 140, 160, 150],
+          ],
+          unload: ['data7', 'data8'],
+        });
+      },
+      function () {
+        chart.load({
+          unload: ['data1', 'data2'],
+        });
+      },
+      function () {
         chart.unload();
-      }, 8000);
-
-      setTimeout(function () {
+      },
+      function () {
         chart.load({
           rows: [
-            ['data1@test', 'data2', 'data3'],
+            ['data1', 'data2', 'data3'],
             [90, 120, 300],
             [40, 160, 240],
             [50, 200, 290],
@@ -97,11 +113,18 @@
             [90, 220, 320],
           ]
         });
-      }, 9000);
+      },
+      function () {
+        chart.unload({
+          ids: ['data2', 'data3']
+        });
+      },
+    ];
 
-      setTimeout(function () {
-        chart.unload(['data2', 'data3']);
-      }, 10000);
+    var i = 0;
+    queue.forEach(function (f) {
+      setTimeout(f, 1500 * i++);
+    });
 
     </script>
   </body>

htdocs/samples/data_load_timeseries.html

+<html>
+  <head>
+    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          x: 'x',
+          url: '/data/c3_test_ts.csv',
+          labels: true
+        },
+        axis: {
+          x: {
+            type: 'timeseries'
+          }
+        },
+        subchart: {
+          show: true
+        },
+        zoom: {
+          enabled: true
+        },
+      });
+
+      setTimeout(function () {
+        chart.load({
+          url: '/data/c3_test2_ts.csv'
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.unload({
+          ids: 'data2'
+        });
+      }, 2000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['data1', 30, 20, 50, 40, 60, 50],
+          ],
+          unload: true,
+//          unload: ['data2', 'data3'],
+//          unload: ['data2']
+        });
+      }, 3000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/simple_region.html → htdocs/samples/data_region.html

@@ -6,7 +6,7 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
       var chart = c3.generate({
         bindto: '#chart',

htdocs/samples/timeseries_region.html → htdocs/samples/data_region_timeseries.html

@@ -6,13 +6,13 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
       var chart = c3.generate({
         bindto: '#chart',
         data: {
           x : 'date',
-          x_format : '%Y%m%d',
+          xFormat : '%Y%m%d',
           columns: [
 //            ['x', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-04', '2013-01-05', '2013-01-06'],
             ['date', '20130101', '20130102', '20130103', '20130104', '20130105', '20130106'],

htdocs/samples/data_url.html

@@ -6,13 +6,47 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
         data: {
           url: '/data/c3_test.csv'
         }
       });
+
+      setTimeout(function () {
+        chart.load({
+          url: '/data/c3_test2.csv',
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart = c3.generate({
+          data: {
+            url: '/data/c3_test.json',
+            mimeType: 'json'
+          }
+        });
+      }, 2000);
+
+      setTimeout(function () {
+        chart.load({
+          url: '/data/c3_test_2.json',
+          mimeType: 'json'
+        });
+      }, 3000);
+
+      setTimeout(function () {
+        chart.load({
+          url: '/data/c3_test_3.json',
+          mimeType: 'json',
+          keys: {
+            value: ['data1', 'data2']
+          }
+        });
+      }, 4000);
+
     </script>
   </body>
 </html>

htdocs/samples/domain_y.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <button id="btn1">Bar</button>
+    <button id="btn2">Line</button>
+    <button id="btn3">Area</button>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var normalData = {
+          columns: [
+            ['data1', -1030, -1200, 1000],
+            ['data2', -1150, -220, -1110]
+          ],
+          labels: true,
+      },
+      allPositiveData = {
+          columns: [
+            ['data1', 1030, 1200, 1100],
+            ['data2', 2050, 2020, 2010]
+          ],
+          labels: true,
+      },
+      allNegativeData = {
+          columns: [
+            ['data1', -1030, -2200, -2100],
+            ['data2', -1150, -2010, -1200]
+          ],
+          labels: true,
+      }
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: normalData
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: allPositiveData
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: allNegativeData
+      });
+
+      d3.select('#btn1').on('click', function () {
+        chart1.transform('bar');
+        chart2.transform('bar');
+        chart3.transform('bar');
+      });
+      d3.select('#btn2').on('click', function () {
+        chart1.transform('line');
+        chart2.transform('line');
+        chart3.transform('line');
+      });
+      d3.select('#btn3').on('click', function () {
+        chart1.transform('area');
+        chart2.transform('area');
+        chart3.transform('area');
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/element.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        data: {
+          columns: [
+            ['sample', 30, 200, 100, null, 150, 250]
+          ],
+        },
+      });
+
+      var chart2 = c3.generate({
+        data: {
+          columns: [
+            ['sample', 30, 200, 100, null, 150, 250]
+          ],
+          type: 'bar'
+        }
+      });
+
+      document.getElementById('chart1').appendChild(chart1.element);
+
+      $('#chart2').append(chart2.element);
+
+    </script>
+  </body>
+</html>

htdocs/samples/chart_xy.html → htdocs/samples/emptydata.html

@@ -6,35 +6,32 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
-        bindto: '#chart',
         data: {
-          x: 'x',
           columns: [
-            ['x', 30, 40, 100, 200, 250, 350],
-            ['sample', 30, 200, 100, 400, 150, 250]
-          ]
+//            ['data1', 100, 200],
+          ],
+          empty: {
+            label: {
+              text: 'No Data'
+            }
+          }
+        },
+        subchart: {
+          show: true
         }
       });
 
       setTimeout(function () {
         chart.load({
           columns: [
-            ['sample', 100, 300, 200, 300, 150, 300]
-          ]
-        })
+            ['data1', 100, 200],
+          ],
+        });
       }, 1000);
-
-      setTimeout(function () {
-        chart.load({
-          columns: [
-            ['x', 130, 140, 200, 300, 450, 550],
-            ['sample', 200, 350, 100, 200, 50, 100]
-          ]
-        })
-      }, 1500);
     </script>
   </body>
 </html>

htdocs/samples/timeseries_grid_x_lines.html → htdocs/samples/grid_focus.html

@@ -3,37 +3,27 @@
     <link rel="stylesheet" type="text/css" href="/css/c3.css">
   </head>
   <body>
-    <div id="chart"></div>
+    <div id="chart1"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
-      var chart = c3.generate({
-        bindto: '#chart',
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
         data: {
-          x : 'date',
-          x_format : '%Y%m%d',
           columns: [
-//            ['x', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-04', '2013-01-05', '2013-01-06'],
-            ['date', '20130101', '20130102', '20130103', '20130104', '20130105', '20130106'],
-            ['sample', 30, 200, 100, 400, 150, 250]
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 130, 300, 200, 300, 250, 150]
           ]
         },
-        axis : {
-          x : {
-            type : 'timeseries'
-          }
-        },
         grid: {
-          x: {
-            lines: [{
-               value: '20130104',
-               text: '2013/01/04',
-               class: 'lineFor20130104'
-            }]
+          focus: {
+            show: false
           }
         }
       });
+
     </script>
   </body>
 </html>

htdocs/samples/grid_x_lines.html

@@ -3,47 +3,64 @@
     <link rel="stylesheet" type="text/css" href="/css/c3.css">
   </head>
   <body>
-    <div id="chart"></div>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
-        bindto: '#chart',
+        bindto: '#chart1',
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250]
-          ]
-        },
-        axis: {
-//          rotated: true,
+            ['data1', 30, 200, 100, 400, 150, 250]
+          ],
+          type: 'bar'
         },
         grid: {
           x: {
-            lines: [{value: 3, text:'Lable 3'}, {value: 4.5, text: 'Lable 4.5'}]
+            show: true,
+            lines: [{
+               value: 2,
+               text: 'Label 2',
+               class: 'lineFor2'
+            }]
+          },
+          y: {
+            show: true,
           }
         }
       });
 
-      setTimeout(function () {
-        chart.xgrids([{value: 1, text:'Lable 1'}, {value: 4, text: 'Lable 4'}]);
-      }, 1000);
-
-      setTimeout(function () {
-        chart.xgrids([{value: 2, text:'Lable 2'}]);
-      }, 2000);
-
-      setTimeout(function () {
-        chart.xgrids.add([{value: 3, text:'Lable 3', class:'hoge'}]);
-      }, 3000);
-
-      setTimeout(function () {
-        chart.xgrids.remove({value:2});
-      }, 4000);
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          x : 'x',
+          columns: [
+            ['x', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-04', '2013-01-05'],
+            ['sample', 30, 200, 100, 400, 150]
+          ],
+        },
+        axis : {
+          x : {
+            type : 'timeseries'
+          }
+        },
+        grid: {
+          x: {
+            lines: [{
+               value: '2013-01-04',
+               text: '2013/01/04',
+               class: 'lineFor20130104'
+            }]
+          },
+          lines: {
+            front: false
+          }
+        }
+      });
 
-      setTimeout(function () {
-        chart.xgrids.remove({class:'hoge'});
-      }, 5000);
     </script>
   </body>
 </html>

htdocs/samples/grid_x_lines_timeseries.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+    var chart1 = c3.generate({
+      "bindto": "#chart1",
+      "axis": {
+          "x": {
+            "type": "timeseries",
+            "tick": {
+              format: '%Y-%m-%d %H:%M:%S'
+            }
+          }
+      },
+      "grid": {
+          "x": {
+            "lines": [
+                { "value": 1401883200000, "text": new Date(1401883200000), "color": "#f00" },
+            ]
+          }
+      },
+      "data": {
+        "type": "line",
+        "columns": [
+            ["epoch", 1401879600000, 1401883200000, 1401886800000],
+            ["y", 1955, 2419, 2262]
+        ],
+        "xs": {
+            "y": "epoch"
+        }
+      }
+    });
+
+    var chart2 = c3.generate({
+      "bindto": "#chart2",
+      "axis": {
+          "x": {
+            "type": "timeseries",
+            "tick": {
+              format: '%Y-%m-%d %H:%M:%S'
+            }
+          }
+      },
+      "grid": {
+          "x": {
+            "lines": [
+                { "value": new Date(1401883200000), "text": new Date(1401883200000), "color": "#f00" },
+            ]
+          }
+      },
+      "data": {
+        "type": "line",
+        "columns": [
+            ["epoch", 1401879600000, 1401883200000, 1401886800000],
+            ["y", 1955, 2419, 2262]
+        ],
+        "xs": {
+            "y": "epoch"
+        }
+      }
+    });
+
+    </script>
+  </body>
+</html>

htdocs/samples/grids.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+    <div id="chart4"></div>
+    <div id="chart5"></div>
+    <div id="chart6"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var smallData = [['sample', 30, 200, 100, 400, 150, 250]],
+          bigData = [['sample', 30, 200, 100, 400, 150, 250, 30, 200, 100, 400, 150, 250]];
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: smallData
+        },
+        grid: {
+          x: {
+            show: true
+          },
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: smallData
+        },
+        grid: {
+          y: {
+            show: true
+          }
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: smallData
+        },
+        axis: {
+          rotated: true,
+        },
+        grid: {
+          x: {
+            show: true
+          },
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart4',
+        data: {
+          columns: smallData
+        },
+        axis: {
+          rotated: true,
+        },
+        grid: {
+          y: {
+            show: true
+          }
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart5',
+        data: {
+          columns: bigData
+        },
+        grid: {
+          x: {
+            show: true
+          },
+          y: {
+            show: true
+          }
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart6',
+        data: {
+          columns: bigData
+        },
+        axis: {
+          x: {
+            type: 'category'
+          }
+        },
+        grid: {
+          x: {
+            show: true
+          },
+          y: {
+            show: true
+          }
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/grids_timeseries.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var smallData = [
+        ['x', '2014-01-01', '2014-02-01', '2014-03-01', '2014-04-01', '2014-05-01', '2014-06-01'],
+        ['sample', 30, 200, 100, 400, 150, 250]
+      ],
+      bigData = [
+        ['x', '2014-01-01', '2014-02-01', '2014-03-01', '2014-04-01', '2014-05-01', '2014-06-01', '2014-07-01', '2014-08-01', '2014-09-01', '2014-10-01', '2014-11-01', '2014-12-01'],
+        ['sample', 30, 200, 100, 400, 150, 250, 30, 200, 100, 400, 150, 250]
+      ];
+
+      c3.generate({
+        bindto: '#chart1',
+        data: {
+          x: 'x',
+          columns: smallData
+        },
+        axis: {
+          x: {
+            type: 'timeseries',
+            tick: {
+              format: "%Y-%m-%d %H:%M:%S"
+            }
+          }
+        },
+        grid: {
+          x: {
+            show: true,
+          },
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart2',
+        data: {
+          x: 'x',
+          columns: smallData
+        },
+        axis: {
+          rotated: true,
+          x: {
+            type: 'timeseries',
+            tick: {
+              format: "%Y-%m-%d %H:%M:%S"
+            }
+          }
+        },
+        grid: {
+          x: {
+            show: true,
+          },
+        }
+      });
+
+      c3.generate({
+        bindto: '#chart3',
+        data: {
+          x: 'x',
+          columns: bigData
+        },
+        axis: {
+          x: {
+            type: 'timeseries',
+            tick: {
+              format: "%Y-%m-%d %H:%M:%S"
+            }
+          }
+        },
+        grid: {
+          x: {
+            show: true
+          }
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/simple_zoom.html → htdocs/samples/interaction_enabled.html

@@ -6,19 +6,18 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
-        zoom: {
-          enabled: true
-        },
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250]
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
           ]
         },
-        subchart: {
-          show: true
+        interaction: {
+          enabled: false
         }
       });
     </script>

htdocs/samples/legend.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+    <div id="chart4"></div>
+    <div id="chart5"></div>
+    <div id="chart6"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var columns = [];
+      for (var i = 0; i < 28; i++ ) {
+        columns[i] = ['datahogehogeohgeohoge' + i, 10 * i, 20 * i];
+      }
+
+      c3.generate({
+        bindto: '#chart1',
+        data: {
+          columns: columns,
+        },
+      });
+
+      c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: columns,
+        },
+        legend: {
+          position: 'right'
+        },
+      });
+
+      c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: columns,
+        },
+        legend: {
+          position: 'inset',
+        },
+      });
+
+      c3.generate({
+        bindto: '#chart4',
+        data: {
+          columns: columns,
+        },
+        axis: {
+          rotated: true,
+        },
+      });
+
+      c3.generate({
+        bindto: '#chart5',
+        data: {
+          columns: columns,
+        },
+        legend: {
+          position: 'right'
+        },
+        axis: {
+          rotated: true,
+        },
+      });
+
+      c3.generate({
+        bindto: '#chart6',
+        data: {
+          columns: columns,
+        },
+        legend: {
+          position: 'inset'
+        },
+        axis: {
+          rotated: true,
+        },
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/padding.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+<style type="text/css">
+<!--
+.c3 svg {
+/*    font-size: 13px;*/
+}
+-->
+</style>
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+    <div id="chart3"></div>
+    <div id="chart4"></div>
+    <div id="chart5"></div>
+    <div id="chart6"></div>
+    <div id="chart7"></div>
+    <div id="chart8"></div>
+    <div id="chart9"></div>
+    <div id="chart10"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var option = {
+        padding: {
+          top: 50,
+          right: 200,
+          bottom: 50,
+          left: 200,
+        },
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 130, 100, 200, 100, 150, 150]
+          ],
+          axes: {
+            data2: 'y2'
+          },
+        },
+        axis: {
+          rotated: true,
+          y: {
+            label: {
+              text: 'Y Label', 
+              position: 'outer-center'
+            }
+          },
+          y2: {
+            show: true,
+            label: {
+              text: 'Y2 Label',
+              position: 'outer-center'
+            }
+          }
+        },
+        legend: {
+          position: 'bottom'
+        },
+        subchart: {
+          show: false
+        },
+        grid: {
+          x: {
+            show: true,
+          },
+          y: {
+            show: true,
+          }
+        }
+      };
+
+
+      option.bindto = '#chart1';
+      var chart1 = c3.generate(option);
+
+      option.bindto = '#chart2';
+      option.legend.position = 'right'
+      var chart2 = c3.generate(option);
+
+      option.bindto = '#chart3';
+      option.legend.position = 'bottom';
+      option.subchart.show = true;
+      var chart3 = c3.generate(option);
+
+      option.bindto = '#chart4';
+      option.legend.position = 'right';
+      option.subchart.show = true;
+      var chart4 = c3.generate(option);
+
+      option.bindto = '#chart5';
+      option.padding = {
+          top: 0,
+          right: 0,
+          bottom: 0,
+          left: 0,
+      };
+      option.subchart.show = false;
+      option.legend.position = 'bottom';
+      var chart5 = c3.generate(option);
+
+
+      option.axis.rotated = false;
+
+      option.bindto = '#chart6';
+      var chart6 = c3.generate(option);
+
+      option.bindto = '#chart7';
+      option.legend.position = 'right'
+      var chart7 = c3.generate(option);
+
+      option.bindto = '#chart8';
+      option.legend.position = 'bottom';
+      option.subchart.show = true;
+      var chart8 = c3.generate(option);
+
+      option.bindto = '#chart9';
+      option.legend.position = 'right';
+      option.subchart.show = true;
+      var chart9 = c3.generate(option);
+
+      option.bindto = '#chart10';
+      option.padding = {
+          top: 0,
+          right: 0,
+          bottom: 0,
+          left: 0,
+      };
+      option.subchart.show = false;
+      option.legend.position = 'bottom';
+      var chart10 = c3.generate(option);
+
+    </script>
+  </body>
+</html>

htdocs/samples/padding_update.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+    var axis_rotated = true;
+
+    var generate = function () { return c3.generate({
+      data: {
+        x: 'x',
+        columns: [
+            ['x', '2014-01-01', '2014-02-01', '2014-03-01', '2014-04-01'],
+            ['data1', 190, 200, 190, null],
+        ],
+        type: 'bar',
+        labels: {
+            format: function (v, id) {
+                if (v === null) {
+                    return 'Not Applicable';
+                }
+                return d3.format('$')(v);
+            }
+        }
+      },
+      axis: {
+        x: {
+            type: 'categorized'
+        },
+        rotated: axis_rotated
+      },
+    }); }, chart = generate();
+
+    setTimeout(function () {
+      chart.hide();
+    }, 1000);
+
+    setTimeout(function () {
+      chart.show();
+    }, 2000);
+
+    setTimeout(function () {
+      chart.load({
+        columns: [
+          ['data1', 300, 350, 100]
+        ],
+        categories: ['2014-01-01 10:10:10', '2014-02-01 12:30:00', '2014-03-01 16:30:00']
+      });
+    }, 3000);
+
+    setTimeout(function () {
+      chart.load({
+        columns: [
+          ['data1', 50, 100, 150]
+        ],
+        categories: ['2014', '2015', '2016']
+      });
+    }, 4000);
+
+    setTimeout(function () {
+      axis_rotated = false;
+      chart = generate();
+    }, 5000);
+
+    setTimeout(function () {
+      chart.load({
+        columns: [
+          ['data1', 300, 350, 100000]
+        ],
+      });
+    }, 6000);
+
+    setTimeout(function () {
+      chart.load({
+        columns: [
+          ['data1', 50, 100, 150]
+        ],
+      });
+    }, 7000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/plugin.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+<!--    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>-->
+    <script src="/js/d3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script src="/js/samples/plugin.js"></script>
+    <script>
+      var chart = c3.generate({
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          onclick: function (d, element) { console.log("onclick", d, element); },
+          onmouseover: function (d) { console.log("onmouseover", d); },
+          onmouseout: function (d) { console.log("onmouseout", d); },
+        },
+        test1: 'TEST1',
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/simple_bar.html → htdocs/samples/point_r.html

 <html>
   <head>
-    <link rel="stylesheet" type="text/css" href="/css/style.css">
     <link rel="stylesheet" type="text/css" href="/css/c3.css">
   </head>
   <body>
@@ -13,10 +12,14 @@
         bindto: '#chart',
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250]
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 130, 300, 200, 600, 250, 150]
           ],
-          types: {
-            'sample': 'bar'
+        },
+        point: {
+//          r: 10
+          r: function (d) {
+            return d.id === 'data2' ? 10 : 2.5;
           }
         }
       });

htdocs/samples/regions.html

@@ -11,13 +11,77 @@
       var chart = c3.generate({
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250]
+            ['sample', 30, 200, 100, 400, 150, 250, 300]
           ]
         },
+        axis: {
+          rotated: true,
+          y2: {
+//            show: true,
+          }
+        },
         regions: [
-          {start:2,end:4,class:'region1'}
-        ]
+          {end:1,class:'region1'},
+          {start:2,end:4,class:'region1'},
+          {start:5,class:'region1'},
+          {end:50,axis:'y'},
+          {start:100,end:200,axis:'y'},
+          {start:300,axis:'y'},
+        ],
+        zoom: {
+//          enabled: true
+        }
       });
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['sample', -100, 200, 50, 100, 400, 299]
+          ]
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.regions([]);
+      }, 2000);
+
+      setTimeout(function () {
+        chart.regions([{start:0.5,end:2.5}]);
+      }, 3000);
+
+      setTimeout(function () {
+        chart.regions.add([{start:4.5}]);
+      }, 4000);
+
+      setTimeout(function () {
+        chart.regions.add([{start:3,end:3.5,class:"region1"}, {start:4,end:4.5,class:"region2"}]);
+      }, 5000);
+
+      setTimeout(function () {
+        chart.regions.remove({classes:['region1', 'region2'], duration: 0});
+      }, 6000);
+
+      setTimeout(function () {
+        chart.regions.add([
+          {start:3,end:3.5,class:"region3 hoge"},
+          {start:4,end:4.5,class:"region4 hoge"},
+          {start:0,end:0.5,class:"region5 hogehoge"},
+        ]);
+      }, 7000);
+
+      setTimeout(function () {
+        chart.regions.remove({classes:['hoge'], duration: 500});
+      }, 8000);
+
+      setTimeout(function () {
+        chart.regions.remove({classes:['hogehoge']});
+      }, 9000);
+
+      setTimeout(function () {
+        chart.regions.remove({});
+      }, 10000);
+
+
     </script>
   </body>
 </html>

htdocs/samples/selection.html

@@ -3,12 +3,36 @@
     <link href="/css/c3.css" rel="stylesheet" type="text/css">
   </head>
   <body>
-    <div id="chart"></div>
+    grouped => true, multiple => true
+    <div id="chart1"></div>
+
+    grouped => true, multiple => true, tooltip.grouped = false
+    <div id="chart1-1"></div>
+
+    grouped => true, multiple => false
+    <div id="chart2"></div>
+
+    grouped => true, multiple => false, tooltip.grouped = false
+    <div id="chart2-1"></div>
+
+    grouped => false, multiple => true
+    <div id="chart3"></div>
+
+    grouped => false, multiple => true, tooltip.grouped = false
+    <div id="chart3-1"></div>
+
+    grouped => false, multiple => false
+    <div id="chart4"></div>
+
+    grouped => false, multiple => false, tooltip.grouped = false
+    <div id="chart4-1"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
-      var chart = c3.generate({
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
         data: {
           columns: [
             ['data1', 30, 200, 100, 400, 150, 250],
@@ -17,7 +41,7 @@
           selection: {
             enabled: true,
             grouped: true,
-            multiple: false,
+            multiple: true,
           },
           onclick: function (d, element) { console.log("onclick", d, element); },
           onselected: function (d, element) { console.log("onselected", d, element); },
@@ -26,6 +50,124 @@
           ondragend: function () { console.log("ondragend"); },
         },
       });
+
+      var chart11 = c3.generate({
+        bindto: '#chart1-1',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: true,
+            multiple: true,
+          },
+        },
+        tooltip: {
+          grouped: false
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: true,
+            multiple: false,
+          }
+        }
+      });
+
+      var chart21 = c3.generate({
+        bindto: '#chart2-1',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: true,
+            multiple: false,
+          }
+        },
+        tooltip: {
+          grouped: false
+        }
+      });
+
+      var chart3 = c3.generate({
+        bindto: '#chart3',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: false,
+            multiple: true,
+          }
+        }
+      });
+
+      var chart31 = c3.generate({
+        bindto: '#chart3-1',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: false,
+            multiple: true,
+          }
+        },
+        tooltip: {
+          grouped: false
+        }
+      });
+
+      var chart4 = c3.generate({
+        bindto: '#chart4',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: false,
+            multiple: false,
+          }
+        }
+      });
+
+      var chart41 = c3.generate({
+        bindto: '#chart4-1',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
+          ],
+          selection: {
+            enabled: true,
+            grouped: false,
+            multiple: false,
+          }
+        },
+        tooltip: {
+          grouped: false
+        }
+      });
+
     </script>
   </body>
 </html>

htdocs/samples/simple.html

@@ -6,17 +6,17 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
       var chart = c3.generate({
-        bindto: '#chart',
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250]
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
           ],
           onclick: function (d, element) { console.log("onclick", d, element); },
-          onenter: function (d) { console.log("onenter", d); },
-          onleave: function (d) { console.log("onleave", d); },
+          onmouseover: function (d) { console.log("onmouseover", d); },
+          onmouseout: function (d) { console.log("onmouseout", d); },
         }
       });
     </script>

htdocs/samples/multiple_charts.html → htdocs/samples/subchart.html

 <html>
   <head>
-    <link href="/css/c3.css" rel="stylesheet" type="text/css">
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
   </head>
   <body>
-    <div id="chart1" style="height:300px;"></div>
-    <div id="chart2" style="height:150px;"></div>
-    <div id="chart3" style="height:150px;"></div>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
     <script src="/js/c3.js"></script>
     <script>
+
       var chart1 = c3.generate({
         bindto: '#chart1',
         data: {
-//          xs: {
-//            'data2': 'data1',
-//          },
           columns: [
-            ['data1', 130, 210, 120, 440, 250, 350],
+            ['data1', 30, 200, 100, 400, 150, 250],
             ['data2', 50, 20, 10, 40, 15, 25]
           ],
-//          type: 'scatter'
-//          type: 'pie'
-          selection: {
-            enabled: true
-          }
+          labels: true
         },
-        zoom: {
-          enabled: true
-        },
-        subchart : {
+        subchart: {
           show: true
-        }
+        },
       });
+
       var chart2 = c3.generate({
         bindto: '#chart2',
         data: {
           columns: [
             ['data1', 30, 200, 100, 400, 150, 250],
-            ['data2', 150, 120, 210, 240, 215, 125]
+            ['data2', 50, 20, 10, 40, 15, 25]
           ],
-//          type: 'scatter'
-//          type: 'pie'
+          labels: true
         },
-      });
-      var chart3 = c3.generate({
-        bindto: '#chart3',
-        data: {
-          columns: [
-            ['data1', 30, 200, 100, 400, 150, 250],
-            ['data2', 550, 520, 510, 540, 515, 525]
-          ],
-//          type: 'scatter'
-//          type: 'pie'
+        subchart: {
+          show: true
         },
+        axis: {
+          rotated: true
+        }
       });
+
     </script>
   </body>
 </html>

htdocs/samples/subchart_onbrush.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          x : 'x',
+          columns: [
+            ['x', '2013-01-01', '2013-02-01', '2013-03-01', '2013-04-01', '2013-05-01'],
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+        },
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+              format : "%Y-%m-%d"
+            }
+          }
+        },
+        subchart: {
+          show: true,
+          onbrush: function (domain) {
+            console.log(this, domain);
+          }
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+        },
+        subchart: {
+          show: true,
+          onbrush: function (domain) {
+            console.log(this, domain);
+          }
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/timeseries.html

@@ -12,7 +12,7 @@
         bindto: '#chart',
         data: {
           x : 'date',
-          x_format : '%Y%m%d',
+          xFormat : '%Y%m%d',
           columns: [
 //            ['x', '2013-01-01', '2013-01-02', '2013-01-03', '2013-01-04', '2013-01-05', '2013-01-06'],
             ['date', '20130101', '20130102', '20130103', '20130104', '20130105', '20130106'],

htdocs/samples/timeseries_date.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+      var chart = c3.generate({
+        bindto: '#chart',
+        data: {
+          x : 'x',
+          xFormat : '%Y%m%d',
+          columns: [
+            ['x', new Date('2013-01-01 00:00:00'), new Date('2013-01-02 00:00:00'), new Date('2013-01-03 00:00:00'), new Date('2013-01-04 00:00:00'), new Date('2013-01-05 00:00:00'), new Date('2013-01-06 00:00:00')],
+            ['sample', 30, 200, 100, 400, 150, 250],
+            ['sample2', 130, 300, 200, 450, 250, 350]
+          ]
+        },
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+//              format : "%m/%d" // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
+              format : "%e %b %y" // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
+            }
+          }
+        }
+      });
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['sample', 200, 130, 90, 240, 130, 100],
+            ['sample2', 300, 200, 160, 400, 250, 250]
+          ]
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['x', '20140101', '20140201', '20140301', '20140401', '20140501', '20140601'],
+            ['sample', 500, 630, 690, 440, 630, 900],
+            ['sample2', 400, 600, 460, 200, 350, 450]
+          ]
+        });
+      }, 2000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['x', new Date('2014-01-02 00:00:00'), new Date('2014-02-02 00:00:00'), new Date('2014-03-02 00:00:00'), new Date('2014-04-02 00:00:00'), new Date('2014-05-02 00:00:00'), new Date('2014-06-02 00:00:00')],
+            ['sample', 500, 630, 690, 440, 630, 900],
+            ['sample2', 400, 600, 460, 200, 350, 450]
+          ]
+        });
+      }, 3000);
+
+    </script>
+  </body>
+</html>

htdocs/samples/timeseries_descendent.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+<!--    <script src="/js/c3.min.0.1.35.js"></script>-->
+    <script>
+
+      var dates = ['date',
+        1401908040000,
+        1401907980000,
+        1401907920000,
+        1401907860000,
+        1401907800000,
+        1401907740000,
+        1401907680000,
+        1401907620000,
+        1401907560000,
+        1401907500000
+      ];
+
+      var chart = c3.generate({
+        bindto: '#chart',
+        data: {
+          x : 'date',
+          columns: [
+            dates,
+            ['data1', 30, 200, 100, 400, 150, 250, 30, 200, 100, 400],
+            ['data2', 130, 300, 200, 450, 250, 350, 130, 300, 200, 450]
+          ],
+          types: {
+            data1: 'bar',
+          }
+        },
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+              format : "%Y-%m-%d %H:%M:%S"
+            }
+          }
+        }
+      });
+
+/*
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['sample', 200, 130, 90, 240, 130, 100],
+            ['sample2', 300, 200, 160, 400, 250, 250]
+          ]
+        });
+      }, 1000);
+
+      setTimeout(function () {
+        chart.load({
+          columns: [
+            ['date', '20140101', '20140201', '20140301', '20140401', '20140501', '20140601'],
+            ['sample', 500, 630, 690, 440, 630, 900],
+            ['sample2', 400, 600, 460, 200, 350, 450]
+          ]
+        });
+      }, 2000);
+
+*/
+    </script>
+  </body>
+</html>

htdocs/samples/timeseries_raw.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var rows = [["x","Views","GMV"]];
+      rows = rows.concat([[1398709800000,780,136],
+              [1398450600000,812,134],
+              [1399401000000,784,154],
+              [1399228200000,786,135],
+              [1399573800000,802,131],
+              [1399487400000,773,166],
+              [1399314600000,787,146],
+              [1399919400000,1496,309],
+              [1399833000000,767,138],
+              [1399746600000,797,141],
+              [1399660200000,796,146],
+              [1398623400000,779,143],
+              [1399055400000,794,140],
+              [1398969000000,791,140],
+              [1398882600000,825,107],
+              [1399141800000,786,136],
+              [1398537000000,773,143],
+              [1398796200000,783,154],
+              [1400005800000,1754,284]].sort(function (a, b) {
+        return a[0] - b[0];
+      }));
+
+      var chart = c3.generate({
+        bindto: '#chart',
+        data: {
+          x : 'x',
+          rows: rows
+        },
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+              format : "%Y-%m-%d" // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
+            }
+          }
+        }
+      });
+    </script>
+  </body>
+</html>

htdocs/samples/interaction_zoom.html → htdocs/samples/tooltip_grouped.html

@@ -6,18 +6,21 @@
     <div id="chart"></div>
 
     <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.min.js"></script>
+    <script src="/js/c3.js"></script>
     <script>
+
       var chart = c3.generate({
         data: {
           columns: [
-            ['sample', 30, 200, 100, 400, 150, 250, 150, 200, 170, 240, 350, 150, 100, 400, 150, 250, 150, 200, 170, 240, 100, 150, 250, 150, 200, 170, 240, 30, 200, 100, 400, 150, 250, 150, 200, 170, 240, 350, 150, 100, 400, 350, 220, 250, 300, 270, 140, 150, 90, 150, 50, 120, 70, 40]
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 50, 20, 10, 40, 15, 25]
           ]
         },
-        zoom: {
-          enabled: true
+        tooltip: {
+          grouped: false
         }
       });
+
     </script>
   </body>
 </html>

htdocs/samples/zoom.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+    <button onclick="load()">Load</button>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart = c3.generate({
+        bindto: '#chart',
+        data: {
+          columns: [
+            generateData(100)
+          ],
+        },
+        zoom: { enabled: true },
+        subchart: { show: true }
+      });
+
+      function load() {
+        chart.load({
+          columns: [
+            generateData(Math.random() * 1000)
+          ],
+        });
+      }
+
+      function generateData(n) {
+        var column = ['sample'];
+        for (var i = 0; i < n; i++) {
+          column.push(Math.random() * 500);
+        }
+        return column;
+      }
+
+    </script>
+  </body>
+</html>

htdocs/samples/zoom_category.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+    <button onclick="load()">Load</button>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart = c3.generate({
+        bindto: '#chart',
+        data: {
+          columns: [
+            generateData(100)
+          ],
+        },
+        axis: {
+          x: {
+            type: 'category'
+          }
+        },
+        zoom: { enabled: true },
+        subchart: { show: true }
+      });
+
+      function load() {
+        chart.load({
+          columns: [
+            generateData(Math.random() * 1000)
+          ],
+        });
+      }
+
+      function generateData(n) {
+        var column = ['sample'];
+        for (var i = 0; i < n; i++) {
+          column.push(Math.random() * 500);
+        }
+        return column;
+      }
+
+    </script>
+  </body>
+</html>

htdocs/samples/zoom_onzoom.html

+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart1"></div>
+    <div id="chart2"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script>
+
+      var chart1 = c3.generate({
+        bindto: '#chart1',
+        data: {
+          x : 'x',
+          columns: [
+            ['x', '2013-01-01', '2013-02-01', '2013-03-01', '2013-04-01', '2013-05-01'],
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+        },
+        axis : {
+          x : {
+            type : 'timeseries',
+            tick : {
+              format : "%Y-%m-%d"
+            }
+          }
+        },
+        zoom: {
+          enabled: true,
+          onzoom: function (domain) {
+            console.log(this, domain);
+          }
+        }
+      });
+
+      var chart2 = c3.generate({
+        bindto: '#chart2',
+        data: {
+          columns: [
+            ['sample', 30, 200, 100, 400, 150],
+            ['sample2', 130, 300, 200, 450, 250]
+          ]
+        },
+        zoom: {
+          enabled: true,
+          onzoom: function (domain) {
+            console.log(this, domain);
+          }
+        }
+      });
+
+    </script>
+  </body>
+</html>

htdocs/samples/zoom_reduction.html

+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+    <title>c3ext</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="shortcut icon" href="/images/logo_128.ico" />
+    <link href="/css/c3.css" rel="stylesheet" />
+    <script src="http://code.jquery.com/jquery-2.0.3.min.js"></script>
+    <script src="https://rawgithub.com/brandonaaron/jquery-mousewheel/master/jquery.mousewheel.min.js"></script>
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.js"></script>
+    <script src="/js/extensions/c3ext.js"></script>
+    <script src="/js/samples/zoom_reduction.js"></script>
+</head>
+<body onload="main()">
+    <div class="container-fluid">
+        <h1>C3 DataSet Reduction by Zoom Level</h1>
+        <h2>Hackathon May 2014</h2>
+        <h4>By Dan-el Khen</h4>
+        <p>Rendering graphs in the browser has many advantages, the downside is that takes a long time to render when having large datasets. </p>
+        <p>This feature allows you reduces the dataset according to your current zoom level. 
+        It allows the developer to implement the reduction algorithm in a simple function that accepts an array of values, and returns a reduced single value.
+        The default reducer will take the first item, but avg/sum/first/last or any other algorithm is simple to implement.
+        </p>
+        <h3>Example</h3>
+        <p>
+            In the following example, we'll render 10K data points, each time we'll reduce those to about 100 items (depending on available size on your screen),
+            when zooming in, the resolution of the data will be better and more accurate. This would help in showing the big picture, even when the amount of data is bigger than the numbers of pixels on the screen.
+        </p>
+        <p>Click on the buttons or scroll with your mouse wheel inside the graph to zoom and/or pan.</p>
+        <pre id="status"></pre>
+        <div>
+            <button onclick="chart.zoom2.zoomIn()">zoomIn</button>
+            <button onclick="chart.zoom2.zoomOut()">zoomOut</button>
+            <button onclick="chart.zoom2.panLeft()">panLeft</button>
+            <button onclick="chart.zoom2.panRight()">panRight</button>
+            <button onclick="chart.zoom2.enhance()">enhance</button>
+            <button onclick="chart.zoom2.dehance()">dehance</button>
+            <button onclick="chart.zoom2.reset()">reset</button>
+        </div>
+        <div id="divChart" style="height:300px"></div>
+        <h3>Notes</h3>
+        <p>Only 'columns' data format is supported for now.</p>
+    </div>
+</body>
+</html>

package.json

 {
   "name": "c3",
-  "version": "0.1.31",
+  "version": "0.3.0",
   "description": "D3-based reusable chart library",
   "main": "c3.js",
   "scripts": {
@@ -21,9 +21,11 @@
   "readmeFilename": "README.md",
   "devDependencies": {
     "grunt": "~0.4.1",
-    "grunt-contrib-jshint": "~0.7.1",
+    "grunt-contrib-concat": "~0.5.0",
     "grunt-contrib-jasmine": "~0.5.2",
-    "load-grunt-tasks": "~0.2.0",
-    "grunt-contrib-uglify": "~0.4.0"
+    "grunt-contrib-jshint": "~0.7.1",
+    "grunt-contrib-uglify": "~0.4.0",
+    "grunt-contrib-watch": "^0.6.1",
+    "load-grunt-tasks": "~0.2.0"
   }
 }

src/api.axis.js

+c3_chart_fn.axis = function () {};
+c3_chart_fn.axis.labels = function (labels) {
+    var $$ = this.internal;
+    if (arguments.length) {
+        Object.keys(labels).forEach(function (axisId) {
+            $$.setAxisLabelText(axisId, labels[axisId]);
+        });
+        $$.updateAxisLabels();
+    }
+    // TODO: return some values?
+};
+c3_chart_fn.axis.max = function (max) {
+    var $$ = this.internal, config = $$.config;
+    if (arguments.length) {
+        if (typeof max === 'object') {
+            if (isValue(max.x)) { config.axis_x_max = max.x; }
+            if (isValue(max.y)) { config.axis_y_max = max.y; }
+            if (isValue(max.y2)) { config.axis_y2_max = max.y2; }
+        } else {
+            config.axis_y_max = config.axis_y2_max = max;
+        }
+        $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true});
+    }
+};
+c3_chart_fn.axis.min = function (min) {
+    var $$ = this.internal, config = $$.config;
+    if (arguments.length) {
+        if (typeof min === 'object') {
+            if (isValue(min.x)) { config.axis_x_min = min.x; }
+            if (isValue(min.y)) { config.axis_y_min = min.y; }
+            if (isValue(min.y2)) { config.axis_y2_min = min.y2; }
+        } else {
+            config.axis_y_min = config.axis_y2_min = min;
+        }
+        $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true});
+    }
+};
+c3_chart_fn.axis.range = function (range) {
+    if (arguments.length) {
+        if (isDefined(range.max)) { this.axis.max(range.max); }
+        if (isDefined(range.min)) { this.axis.min(range.min); }
+    }
+};

src/api.category.js

+c3_chart_fn.category = function (i, category) {
+    var $$ = this.internal, config = $$.config;
+    if (arguments.length > 1) {
+        config.axis_x_categories[i] = category;
+        $$.redraw();
+    }
+    return config.axis_x_categories[i];
+};
+c3_chart_fn.categories = function (categories) {
+    var $$ = this.internal, config = $$.config;
+    if (!arguments.length) { return config.axis_x_categories; }
+    config.axis_x_categories = categories;
+    $$.redraw();
+    return config.axis_x_categories;
+};

src/api.chart.js

+c3_chart_fn.resize = function (size) {
+    var $$ = this.internal, config = $$.config;
+    config.size_width = size ? size.width : null;
+    config.size_height = size ? size.height : null;
+    this.flush();
+};
+
+c3_chart_fn.flush = function () {
+    var $$ = this.internal;
+    $$.updateAndRedraw({withLegend: true, withTransition: false, withTransitionForTransform: false});
+};
+
+c3_chart_fn.destroy = function () {
+    var $$ = this.internal;
+    $$.data.targets = undefined;
+    $$.data.xs = {};
+    $$.selectChart.classed('c3', false).html("");
+    window.onresize = null;
+};

src/api.color.js

+// TODO: fix
+c3_chart_fn.color = function (id) {
+    var $$ = this.internal;
+    return $$.color(id); // more patterns
+};

src/api.data.js

+c3_chart_fn.data = function () {};
+c3_chart_fn.data.get = function (targetId) {
+    var target = this.data.getAsTarget(targetId);
+    return isDefined(target) ? target.values.map(function (d) { return d.value; }) : undefined;
+};
+c3_chart_fn.data.getAsTarget = function (targetId) {
+    var targets = this.data.targets.filter(function (t) { return t.id === targetId; });
+    return targets.length > 0 ? targets[0] : undefined;
+};
+c3_chart_fn.data.names = function (names) {
+    var $$ = this.internal, config = $$.config;
+    if (!arguments.length) { return config.data_names; }
+    Object.keys(names).forEach(function (id) {
+        config.data_names[id] = names[id];
+    });
+    $$.redraw({withLegend: true});
+    return config.data_names;
+};
+c3_chart_fn.data.colors = function (colors) {
+    var $$ = this.internal, config = $$.config;
+    if (!arguments.length) { return config.data_colors; }
+    Object.keys(colors).forEach(function (id) {
+        config.data_colors[id] = colors[id];
+    });
+    $$.redraw({withLegend: true});
+    return config.data_colors;
+};

src/api.flow.js

+c3_chart_fn.flow = function (args) {
+    var $$ = this.internal,
+        targets, data, notfoundIds = [], orgDataCount = $$.getMaxDataCount(),
+        dataCount, domain, baseTarget, baseValue, length = 0, tail = 0, diff, to;
+
+    if (args.json) {
+        data = $$.convertJsonToData(args.json, args.keys);
+    }
+    else if (args.rows) {
+        data = $$.convertRowsToData(args.rows);
+    }
+    else if (args.columns) {
+        data = $$.convertColumnsToData(args.columns);
+    }
+    else {
+        return;
+    }
+    targets = $$.convertDataToTargets(data, true);
+
+    // Update/Add data
+    $$.data.targets.forEach(function (t) {
+        var found = false, i, j;
+        for (i = 0; i < targets.length; i++) {
+            if (t.id === targets[i].id) {
+                found = true;
+
+                if (t.values[t.values.length - 1]) {
+                    tail = t.values[t.values.length - 1].index + 1;
+                }
+                length = targets[i].values.length;
+
+                for (j = 0; j < length; j++) {
+                    targets[i].values[j].index = tail + j;
+                    if (!$$.isTimeSeries()) {
+                        targets[i].values[j].x = tail + j;
+                    }
+                }
+                t.values = t.values.concat(targets[i].values);
+
+                targets.splice(i, 1);
+                break;
+            }
+        }
+        if (!found) { notfoundIds.push(t.id); }
+    });
+
+    // Append null for not found targets
+    $$.data.targets.forEach(function (t) {
+        var i, j;
+        for (i = 0; i < notfoundIds.length; i++) {
+            if (t.id === notfoundIds[i]) {
+                tail = t.values[t.values.length - 1].index + 1;
+                for (j = 0; j < length; j++) {
+                    t.values.push({
+                        id: t.id,
+                        index: tail + j,
+                        x: $$.isTimeSeries() ? $$.getOtherTargetX(tail + j) : tail + j,
+                        value: null
+                    });
+                }
+            }
+        }
+    });
+
+    // Generate null values for new target
+    if ($$.data.targets.length) {
+        targets.forEach(function (t) {
+            var i, missing = [];
+            for (i = $$.data.targets[0].values[0].index; i < tail; i++) {
+                missing.push({
+                    id: t.id,
+                    index: i,
+                    x: $$.isTimeSeries() ? $$.getOtherTargetX(i) : i,
+                    value: null
+                });
+            }
+            t.values.forEach(function (v) {
+                v.index += tail;
+                if (!$$.isTimeSeries()) {
+                    v.x += tail;
+                }
+            });
+            t.values = missing.concat(t.values);
+        });
+    }
+    $$.data.targets = $$.data.targets.concat(targets); // add remained
+
+    // check data count because behavior needs to change when it's only one
+    dataCount = $$.getMaxDataCount();
+    baseTarget = $$.data.targets[0];
+    baseValue = baseTarget.values[0];
+
+    // Update length to flow if needed
+    if (isDefined(args.to)) {
+        length = 0;
+        to = $$.isTimeSeries() ? $$.parseDate(args.to) : args.to;
+        baseTarget.values.forEach(function (v) {
+            if (v.x < to) { length++; }
+        });
+    } else if (isDefined(args.length)) {
+        length = args.length;
+    }
+
+    // If only one data, update the domain to flow from left edge of the chart
+    if (!orgDataCount) {
+        if ($$.isTimeSeries()) {
+            if (baseTarget.values.length > 1) {
+                diff = baseTarget.values[baseTarget.values.length - 1].x - baseValue.x;
+            } else {
+                diff = baseValue.x - $$.getXDomain($$.data.targets)[0];
+            }
+        } else {
+            diff = 1;
+        }
+        domain = [baseValue.x - diff, baseValue.x];
+        $$.updateXDomain(null, true, true, domain);
+    } else if (orgDataCount === 1) {
+        if ($$.isTimeSeries()) {
+            diff = (baseTarget.values[baseTarget.values.length - 1].x - baseValue.x) / 2;
+            domain = [new Date(+baseValue.x - diff), new Date(+baseValue.x + diff)];
+            $$.updateXDomain(null, true, true, domain);
+        }
+    }
+
+    // Set targets
+    $$.updateTargets($$.data.targets);
+
+    // Redraw with new targets
+    $$.redraw({
+        flow: {
+            index: baseValue.index,
+            length: length,
+            duration: isValue(args.duration) ? args.duration : $$.config.transition_duration,
+            done: args.done,
+            orgDataCount: orgDataCount,
+        },
+        withLegend: true,
+        withTransition: orgDataCount > 1,
+    });
+};
+
+c3_chart_internal_fn.generateFlow = function (args) {
+    var $$ = this, config = $$.config, d3 = $$.d3;
+
+    return function () {
+        var targets = args.targets,
+            flow = args.flow,
+            drawBar = args.drawBar,
+            drawLine = args.drawLine,
+            drawArea = args.drawArea,
+            cx = args.cx,
+            cy = args.cy,
+            xv = args.xv,
+            xForText = args.xForText,
+            yForText = args.yForText,
+            duration = args.duration;
+
+        var translateX, scaleX = 1, transform,
+            flowIndex = flow.index,
+            flowLength = flow.length,
+            flowStart = $$.getValueOnIndex($$.data.targets[0].values, flowIndex),
+            flowEnd = $$.getValueOnIndex($$.data.targets[0].values, flowIndex + flowLength),
+            orgDomain = $$.x.domain(), domain,
+            durationForFlow = flow.duration || duration,
+            done = flow.done || function () {},
+            wait = $$.generateWait();
+
+        var xgrid = $$.xgrid || d3.selectAll([]),
+            xgridLines = $$.xgridLines || d3.selectAll([]),
+            mainRegion = $$.mainRegion || d3.selectAll([]),
+            mainText = $$.mainText || d3.selectAll([]),
+            mainBar = $$.mainBar || d3.selectAll([]),
+            mainLine = $$.mainLine || d3.selectAll([]),
+            mainArea = $$.mainArea || d3.selectAll([]),
+            mainCircle = $$.mainCircle || d3.selectAll([]);
+
+        // remove head data after rendered
+        $$.data.targets.forEach(function (d) {
+            d.values.splice(0, flowLength);
+        });
+
+        // update x domain to generate axis elements for flow
+        domain = $$.updateXDomain(targets, true, true);
+        // update elements related to x scale
+        if ($$.updateXGrid) { $$.updateXGrid(true); }
+
+        // generate transform to flow
+        if (!flow.orgDataCount) { // if empty
+            if ($$.data.targets[0].values.length !== 1) {
+                translateX = $$.x(orgDomain[0]) - $$.x(domain[0]);
+            } else {
+                if ($$.isTimeSeries()) {
+                    flowStart = $$.getValueOnIndex($$.data.targets[0].values, 0);
+                    flowEnd = $$.getValueOnIndex($$.data.targets[0].values, $$.data.targets[0].values.length - 1);
+                    translateX = $$.x(flowStart.x) - $$.x(flowEnd.x);
+                } else {
+                    translateX = diffDomain(domain) / 2;
+                }
+            }
+        } else if (flow.orgDataCount === 1 || flowStart.x === flowEnd.x) {
+            translateX = $$.x(orgDomain[0]) - $$.x(domain[0]);
+        } else {
+            if ($$.isTimeSeries()) {
+                translateX = ($$.x(orgDomain[0]) - $$.x(domain[0]));
+            } else {
+                translateX = ($$.x(flowStart.x) - $$.x(flowEnd.x));
+            }
+        }
+        scaleX = (diffDomain(orgDomain) / diffDomain(domain));
+        transform = 'translate(' + translateX + ',0) scale(' + scaleX + ',1)';
+
+        d3.transition().ease('linear').duration(durationForFlow).each(function () {
+            wait.add($$.axes.x.transition().call($$.xAxis));
+            wait.add(mainBar.transition().attr('transform', transform));
+            wait.add(mainLine.transition().attr('transform', transform));
+            wait.add(mainArea.transition().attr('transform', transform));
+            wait.add(mainCircle.transition().attr('transform', transform));
+            wait.add(mainText.transition().attr('transform', transform));
+            wait.add(mainRegion.filter($$.isRegionOnX).transition().attr('transform', transform));
+            wait.add(xgrid.transition().attr('transform', transform));
+            wait.add(xgridLines.transition().attr('transform', transform));
+        })
+        .call(wait, function () {
+            var i, shapes = [], texts = [], eventRects = [];
+
+            // remove flowed elements
+            if (flowLength) {
+                for (i = 0; i < flowLength; i++) {
+                    shapes.push('.' + CLASS.shape + '-' + (flowIndex + i));
+                    texts.push('.' + CLASS.text + '-' + (flowIndex + i));
+                    eventRects.push('.' + CLASS.eventRect + '-' + (flowIndex + i));
+                }
+                $$.svg.selectAll('.' + CLASS.shapes).selectAll(shapes).remove();
+                $$.svg.selectAll('.' + CLASS.texts).selectAll(texts).remove();
+                $$.svg.selectAll('.' + CLASS.eventRects).selectAll(eventRects).remove();
+                $$.svg.select('.' + CLASS.xgrid).remove();
+            }
+
+            // draw again for removing flowed elements and reverting attr
+            xgrid
+                .attr('transform', null)
+                .attr($$.xgridAttr);
+            xgridLines
+                .attr('transform', null);
+            xgridLines.select('line')
+                .attr("x1", config.axis_rotated ? 0 : xv)
+                .attr("x2", config.axis_rotated ? $$.width : xv);
+            xgridLines.select('text')
+                .attr("x", config.axis_rotated ? $$.width : 0)
+                .attr("y", xv);
+            mainBar
+                .attr('transform', null)
+                .attr("d", drawBar);
+            mainLine
+                .attr('transform', null)
+                .attr("d", drawLine);
+            mainArea
+                .attr('transform', null)
+                .attr("d", drawArea);
+            mainCircle
+                .attr('transform', null)
+                .attr("cx", cx)
+                .attr("cy", cy);
+            mainText
+                .attr('transform', null)
+                .attr('x', xForText)
+                .attr('y', yForText)
+                .style('fill-opacity', $$.opacityForText.bind($$));
+            mainRegion
+                .attr('transform', null);
+            mainRegion.select('rect').filter($$.isRegionOnX)
+                .attr("x", $$.regionX.bind($$))
+                .attr("width", $$.regionWidth.bind($$));
+            $$.updateEventRect();
+
+            // callback for end of flow
+            done();
+        });
+    };
+};

src/api.focus.js

+c3_chart_fn.focus = function (targetId) {
+    var $$ = this.internal,
+        candidates = $$.svg.selectAll($$.selectorTarget(targetId)),
+        candidatesForNoneArc = candidates.filter($$.isNoneArc.bind($$)),
+        candidatesForArc = candidates.filter($$.isArc.bind($$));
+    function focus(targets) {
+        $$.filterTargetsToShow(targets).transition().duration(100).style('opacity', 1);
+    }
+    this.revert();
+    this.defocus();
+    focus(candidatesForNoneArc.classed(CLASS.focused, true));
+    focus(candidatesForArc);
+    if ($$.hasArcType()) {
+        $$.expandArc(targetId, true);
+    }
+    $$.toggleFocusLegend(targetId, true);
+};
+
+c3_chart_fn.defocus = function (targetId) {
+    var $$ = this.internal,
+        candidates = $$.svg.selectAll($$.selectorTarget(targetId)),
+        candidatesForNoneArc = candidates.filter($$.isNoneArc.bind($$)),
+        candidatesForArc = candidates.filter($$.isArc.bind($$));
+    function defocus(targets) {
+        $$.filterTargetsToShow(targets).transition().duration(100).style('opacity', 0.3);
+    }
+    this.revert();
+    defocus(candidatesForNoneArc.classed(CLASS.focused, false));
+    defocus(candidatesForArc);
+    if ($$.hasArcType()) {
+        $$.unexpandArc(targetId);
+    }
+    $$.toggleFocusLegend(targetId, false);
+};
+
+c3_chart_fn.revert = function (targetId) {
+    var $$ = this.internal,
+        candidates = $$.svg.selectAll($$.selectorTarget(targetId)),
+        candidatesForNoneArc = candidates.filter($$.isNoneArc.bind($$)),
+        candidatesForArc = candidates.filter($$.isArc.bind($$));
+    function revert(targets) {
+        $$.filterTargetsToShow(targets).transition().duration(100).style('opacity', 1);
+    }
+    revert(candidatesForNoneArc.classed(CLASS.focused, false));
+    revert(candidatesForArc);
+    if ($$.hasArcType()) {
+        $$.unexpandArc(targetId);
+    }
+    $$.revertLegend();
+};

src/api.grid.js

+c3_chart_fn.xgrids = function (grids) {
+    var $$ = this.internal, config = $$.config;
+    if (! grids) { return config.grid_x_lines; }
+    config.grid_x_lines = grids;
+    $$.redraw();
+    return config.grid_x_lines;
+};
+c3_chart_fn.xgrids.add = function (grids) {
+    var $$ = this.internal;
+    return this.xgrids($$.config.grid_x_lines.concat(grids ? grids : []));
+};
+c3_chart_fn.xgrids.remove = function (params) { // TODO: multiple
+    var $$ = this.internal;
+    $$.removeGridLines(params, true);
+};
+
+c3_chart_fn.ygrids = function (grids) {
+    var $$ = this.internal, config = $$.config;
+    if (! grids) { return config.grid_y_lines; }
+    config.grid_y_lines = grids;
+    $$.redraw();
+    return config.grid_y_lines;
+};
+c3_chart_fn.ygrids.add = function (grids) {
+    var $$ = this.internal;
+    return this.ygrids($$.config.grid_y_lines.concat(grids ? grids : []));
+};
+c3_chart_fn.ygrids.remove = function (params) { // TODO: multiple
+    var $$ = this.internal;
+    $$.removeGridLines(params, false);
+};

src/api.group.js

+c3_chart_fn.groups = function (groups) {
+    var $$ = this.internal, config = $$.config;
+    if (isUndefined(groups)) { return config.data_groups; }
+    config.data_groups = groups;
+    $$.redraw();
+    return config.data_groups;
+};

src/api.legend.js

+c3_chart_fn.legend = function () {};
+c3_chart_fn.legend.show = function (targetIds) {
+    var $$ = this.internal;
+    $$.showLegend($$.mapToTargetIds(targetIds));
+    $$.updateAndRedraw({withLegend: true});
+};
+c3_chart_fn.legend.hide = function (targetIds) {
+    var $$ = this.internal;
+    $$.hideLegend($$.mapToTargetIds(targetIds));
+    $$.updateAndRedraw({withLegend: true});
+};

src/api.load.js

+c3_chart_fn.load = function (args) {
+    var $$ = this.internal, config = $$.config;
+    // update xs if specified
+    if (args.xs) {
+        $$.addXs(args.xs);
+    }
+    // update classes if exists
+    if ('classes' in args) {
+        Object.keys(args.classes).forEach(function (id) {
+            config.data_classes[id] = args.classes[id];
+        });
+    }
+    // update categories if exists
+    if ('categories' in args && $$.isCategorized()) {
+        config.axis_x_categories = args.categories;
+    }
+    // use cache if exists
+    if ('cacheIds' in args && $$.hasCaches(args.cacheIds)) {
+        $$.load($$.getCaches(args.cacheIds), args.done);
+        return;
+    }
+    // unload if needed
+    if ('unload' in args) {
+        // TODO: do not unload if target will load (included in url/rows/columns)
+        $$.unload($$.mapToTargetIds((typeof args.unload === 'boolean' && args.unload) ? null : args.unload), function () {
+            $$.loadFromArgs(args);
+        });
+    } else {
+        $$.loadFromArgs(args);
+    }
+};
+
+c3_chart_fn.unload = function (args) {
+    var $$ = this.internal;
+    args = args || {};
+    $$.unload($$.mapToTargetIds(args.ids), function () {
+        $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true});
+        if (args.done) { args.done(); }
+    });
+};

src/api.region.js

+c3_chart_fn.regions = function (regions) {
+    var $$ = this.internal, config = $$.config;
+    if (!regions) { return config.regions; }
+    config.regions = regions;
+    $$.redraw();
+    return config.regions;
+};
+c3_chart_fn.regions.add = function (regions) {
+    var $$ = this.internal, config = $$.config;
+    if (!regions) { return config.regions; }
+    config.regions = config.regions.concat(regions);
+    $$.redraw();
+    return config.regions;
+};
+c3_chart_fn.regions.remove = function (options) {
+    var $$ = this.internal, config = $$.config,
+        duration, classes, regions;
+
+    options = options || {};
+    duration = $$.getOption(options, "duration", config.transition_duration);
+    classes = $$.getOption(options, "classes", [CLASS.region]);
+
+    regions = $$.main.select('.' + CLASS.regions).selectAll(classes.map(function (c) { return '.' + c; }));
+    (duration ? regions.transition().duration(duration) : regions)
+        .style('opacity', 0)
+        .remove();
+
+    config.regions = config.regions.filter(function (region) {
+        var found = false;
+        if (!region.class) {
+            return true;
+        }
+        region.class.split(' ').forEach(function (c) {
+            if (classes.indexOf(c) >= 0) { found = true; }
+        });
+        return !found;
+    });
+
+    return config.regions;
+};

src/api.selection.js

+c3_chart_fn.selected = function (targetId) {
+    var $$ = this.internal, d3 = $$.d3;
+    return d3.merge(
+        $$.main.selectAll('.' + CLASS.shapes + $$.getTargetSelectorSuffix(targetId)).selectAll('.' + CLASS.shape)
+            .filter(function () { return d3.select(this).classed(CLASS.SELECTED); })
+            .map(function (d) { return d.map(function (d) { var data = d.__data__; return data.data ? data.data : data; }); })
+    );
+};
+c3_chart_fn.select = function (ids, indices, resetOther) {
+    var $$ = this.internal, d3 = $$.d3, config = $$.config;
+    if (! config.data_selection_enabled) { return; }
+    $$.main.selectAll('.' + CLASS.shapes).selectAll('.' + CLASS.shape).each(function (d, i) {
+        var shape = d3.select(this), id = d.data ? d.data.id : d.id,
+            toggle = $$.getToggle(this).bind($$),
+            isTargetId = config.data_selection_grouped || !ids || ids.indexOf(id) >= 0,
+            isTargetIndex = !indices || indices.indexOf(i) >= 0,
+            isSelected = shape.classed(CLASS.SELECTED);
+        // line/area selection not supported yet
+        if (shape.classed(CLASS.line) || shape.classed(CLASS.area)) {
+            return;
+        }
+        if (isTargetId && isTargetIndex) {
+            if (config.data_selection_isselectable(d) && !isSelected) {
+                toggle(true, shape.classed(CLASS.SELECTED, true), d, i);
+            }
+        } else if (isDefined(resetOther) && resetOther) {
+            if (isSelected) {
+                toggle(false, shape.classed(CLASS.SELECTED, false), d, i);
+            }
+        }
+    });
+};
+c3_chart_fn.unselect = function (ids, indices) {
+    var $$ = this.internal, d3 = $$.d3, config = $$.config;
+    if (! config.data_selection_enabled) { return; }
+    $$.main.selectAll('.' + CLASS.shapes).selectAll('.' + CLASS.shape).each(function (d, i) {
+        var shape = d3.select(this), id = d.data ? d.data.id : d.id,
+            toggle = $$.getToggle(this).bind($$),
+            isTargetId = config.data_selection_grouped || !ids || ids.indexOf(id) >= 0,
+            isTargetIndex = !indices || indices.indexOf(i) >= 0,
+            isSelected = shape.classed(CLASS.SELECTED);
+        // line/area selection not supported yet
+        if (shape.classed(CLASS.line) || shape.classed(CLASS.area)) {
+            return;
+        }
+        if (isTargetId && isTargetIndex) {
+            if (config.data_selection_isselectable(d)) {
+                if (isSelected) {
+                    toggle(false, shape.classed(CLASS.SELECTED, false), d, i);
+                }
+            }
+        }
+    });
+};

src/api.show.js

+c3_chart_fn.show = function (targetIds, options) {
+    var $$ = this.internal;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    options = options || {};
+
+    $$.removeHiddenTargetIds(targetIds);
+    $$.svg.selectAll($$.selectorTargets(targetIds))
+        .transition()
+        .style('opacity', 1);
+
+    if (options.withLegend) {
+        $$.showLegend(targetIds);
+    }
+
+    $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true});
+};
+
+c3_chart_fn.hide = function (targetIds, options) {
+    var $$ = this.internal;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    options = options || {};
+
+    $$.addHiddenTargetIds(targetIds);
+    $$.svg.selectAll($$.selectorTargets(targetIds))
+        .transition()
+        .style('opacity', 0);
+
+    if (options.withLegend) {
+        $$.hideLegend(targetIds);
+    }
+
+    $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true});
+};
+
+c3_chart_fn.toggle = function (targetId) {
+    var $$ = this.internal;
+    $$.isTargetToShow(targetId) ? this.hide(targetId) : this.show(targetId);
+};

src/api.tooltip.js

+c3_chart_fn.tooltip = function () {};
+c3_chart_fn.tooltip.show = function (args) {
+    var $$ = this.internal, index, mouse;
+
+    // determine mouse position on the chart
+    if (args.mouse) {
+        mouse = args.mouse;
+    }
+
+    // determine focus data
+    if (args.data) {
+        if ($$.isMultipleX()) {
+            // if multiple xs, target point will be determined by mouse
+            mouse = [$$.x(args.data.x), $$.getYScale(args.data.id)(args.data.value)];
+            index = null;
+        } else {
+            // TODO: when tooltip_grouped = false
+            index = isValue(args.data.index) ? args.data.index : $$.getIndexByX(args.data.x);
+        }
+    }
+    else if (args.x) {
+        index = $$.getIndexByX(args.x);
+    }
+    else if (args.index) {
+        index = args.index;
+    }
+
+    // emulate mouse events to show
+    $$.dispatchEvent('mouseover', index, mouse);
+    $$.dispatchEvent('mousemove', index, mouse);
+};
+c3_chart_fn.tooltip.hide = function () {
+    // TODO: get target data by checking the state of focus
+    this.internal.dispatchEvent('mouseout', 0);
+};

src/api.transform.js

+c3_chart_fn.transform = function (type, targetIds) {
+    var $$ = this.internal,
+        options = ['pie', 'donut'].indexOf(type) >= 0 ? {withTransform: true} : null;
+    $$.transformTo(targetIds, type, options);
+};
+
+c3_chart_internal_fn.transformTo = function (targetIds, type, optionsForRedraw) {
+    var $$ = this,
+        withTransitionForAxis = !$$.hasArcType(),
+        options = optionsForRedraw || {withTransitionForAxis: withTransitionForAxis};
+    options.withTransitionForTransform = false;
+    $$.transiting = false;
+    $$.setTargetType(targetIds, type);
+    $$.updateAndRedraw(options);
+};

src/api.x.js

+c3_chart_fn.x = function (x) {
+    var $$ = this.internal;
+    if (arguments.length) {
+        $$.updateTargetX($$.data.targets, x);
+        $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true});
+    }
+    return $$.data.xs;
+};
+c3_chart_fn.xs = function (xs) {
+    var $$ = this.internal;
+    if (arguments.length) {
+        $$.updateTargetXs($$.data.targets, xs);
+        $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true});
+    }
+    return $$.data.xs;
+};

src/api.zoom.js

+c3_chart_fn.zoom = function () {
+};
+c3_chart_fn.zoom.enable = function (enabled) {
+    var $$ = this.internal;
+    $$.config.zoom_enabled = enabled;
+    $$.updateAndRedraw();
+};
+c3_chart_fn.unzoom = function () {
+    var $$ = this.internal;
+    $$.brush.clear().update();
+    $$.redraw({withUpdateXDomain: true});
+};

src/arc.js

+c3_chart_internal_fn.initPie = function () {
+    var $$ = this, d3 = $$.d3, config = $$.config;
+    $$.pie = d3.layout.pie().value(function (d) {
+        return d.values.reduce(function (a, b) { return a + b.value; }, 0);
+    });
+    if (!config.data_order || !config.pie_sort || !config.donut_sort) {
+        $$.pie.sort(null);
+    }
+};
+
+c3_chart_internal_fn.updateRadius = function () {
+    var $$ = this, config = $$.config,
+        w = config.gauge_width || config.donut_width;
+    $$.radiusExpanded = Math.min($$.arcWidth, $$.arcHeight) / 2;
+    $$.radius = $$.radiusExpanded * 0.95;
+    $$.innerRadiusRatio = w ? ($$.radius - w) / $$.radius : 0.6;
+    $$.innerRadius = $$.hasType('donut') || $$.hasType('gauge') ? $$.radius * $$.innerRadiusRatio : 0;
+};
+
+c3_chart_internal_fn.updateArc = function () {
+    var $$ = this;
+    $$.svgArc = $$.getSvgArc();
+    $$.svgArcExpanded = $$.getSvgArcExpanded();
+    $$.svgArcExpandedSub = $$.getSvgArcExpanded(0.98);
+};
+
+c3_chart_internal_fn.updateAngle = function (d) {
+    var $$ = this, config = $$.config,
+        found = false, index = 0;
+    $$.pie($$.filterTargetsToShow($$.data.targets)).sort($$.descByStartAngle).forEach(function (t) {
+        if (! found && t.data.id === d.data.id) {
+            found = true;
+            d = t;
+            d.index = index;
+        }
+        index++;
+    });
+    if (isNaN(d.endAngle)) {
+        d.endAngle = d.startAngle;
+    }
+    if ($$.isGaugeType(d.data)) {
+        var gMin = config.gauge_min, gMax = config.gauge_max,
+            gF = Math.abs(gMin) + gMax,
+            aTic = (Math.PI) / gF;
+        d.startAngle = (-1 * (Math.PI / 2)) + (aTic * Math.abs(gMin));
+        d.endAngle = d.startAngle + (aTic * ((d.value > gMax) ? gMax : d.value));
+    }
+    return found ? d : null;
+};
+
+c3_chart_internal_fn.getSvgArc = function () {
+    var $$ = this,
+        arc = $$.d3.svg.arc().outerRadius($$.radius).innerRadius($$.innerRadius),
+        newArc = function (d, withoutUpdate) {
+            var updated;
+            if (withoutUpdate) { return arc(d); } // for interpolate
+            updated = $$.updateAngle(d);
+            return updated ? arc(updated) : "M 0 0";
+        };
+    // TODO: extends all function
+    newArc.centroid = arc.centroid;
+    return newArc;
+};
+
+c3_chart_internal_fn.getSvgArcExpanded = function (rate) {
+    var $$ = this,
+        arc = $$.d3.svg.arc().outerRadius($$.radiusExpanded * (rate ? rate : 1)).innerRadius($$.innerRadius);
+    return function (d) {
+        var updated = $$.updateAngle(d);
+        return updated ? arc(updated) : "M 0 0";
+    };
+};
+
+c3_chart_internal_fn.getArc = function (d, withoutUpdate, force) {
+    return force || this.isArcType(d.data) ? this.svgArc(d, withoutUpdate) : "M 0 0";
+};
+
+
+c3_chart_internal_fn.transformForArcLabel = function (d) {
+    var $$ = this,
+        updated = $$.updateAngle(d), c, x, y, h, ratio, translate = "";
+    if (updated && !$$.hasType('gauge')) {
+        c = this.svgArc.centroid(updated);
+        x = isNaN(c[0]) ? 0 : c[0];
+        y = isNaN(c[1]) ? 0 : c[1];
+        h = Math.sqrt(x * x + y * y);
+        // TODO: ratio should be an option?
+        ratio = $$.radius && h ? (36 / $$.radius > 0.375 ? 1.175 - 36 / $$.radius : 0.8) * $$.radius / h : 0;
+        translate = "translate(" + (x * ratio) +  ',' + (y * ratio) +  ")";
+    }
+    return translate;
+};
+
+c3_chart_internal_fn.getArcRatio = function (d) {
+    var $$ = this,
+        whole = $$.hasType('gauge') ? Math.PI : (Math.PI * 2);
+    return d ? (d.endAngle - d.startAngle) / whole : null;
+};
+
+c3_chart_internal_fn.convertToArcData = function (d) {
+    return this.addName({
+        id: d.data.id,
+        value: d.value,
+        ratio: this.getArcRatio(d),
+        index: d.index
+    });
+};
+
+c3_chart_internal_fn.textForArcLabel = function (d) {
+    var $$ = this,
+        updated, value, ratio, format;
+    if (! $$.shouldShowArcLabel()) { return ""; }
+    updated = $$.updateAngle(d);
+    value = updated ? updated.value : null;
+    ratio = $$.getArcRatio(updated);
+    if (! $$.hasType('gauge') && ! $$.meetsArcLabelThreshold(ratio)) { return ""; }
+    format = $$.getArcLabelFormat();
+    return format ? format(value, ratio) : $$.defaultArcValueFormat(value, ratio);
+};
+
+c3_chart_internal_fn.expandArc = function (id, withoutFadeOut) {
+    var $$ = this,
+        target = $$.svg.selectAll('.' + CLASS.chartArc + $$.selectorTarget(id)),
+        noneTargets = $$.svg.selectAll('.' + CLASS.arc).filter(function (data) { return data.data.id !== id; });
+
+    if ($$.shouldExpand(id)) {
+        target.selectAll('path')
+            .transition().duration(50)
+            .attr("d", $$.svgArcExpanded)
+            .transition().duration(100)
+            .attr("d", $$.svgArcExpandedSub)
+            .each(function (d) {
+                if ($$.isDonutType(d.data)) {
+                    // callback here
+                }
+            });
+    }
+    if (!withoutFadeOut) {
+        noneTargets.style("opacity", 0.3);
+    }
+};
+
+c3_chart_internal_fn.unexpandArc = function (id) {
+    var $$ = this,
+        target = $$.svg.selectAll('.' + CLASS.chartArc + $$.selectorTarget(id));
+    target.selectAll('path.' + CLASS.arc)
+        .transition().duration(50)
+        .attr("d", $$.svgArc);
+    $$.svg.selectAll('.' + CLASS.arc)
+        .style("opacity", 1);
+};
+
+c3_chart_internal_fn.shouldExpand = function (id) {
+    var $$ = this, config = $$.config;
+    return ($$.isDonutType(id) && config.donut_expand) || ($$.isGaugeType(id) && config.gauge_expand) || ($$.isPieType(id) && config.pie_expand);
+};
+
+c3_chart_internal_fn.shouldShowArcLabel = function () {
+    var $$ = this, config = $$.config, shouldShow = true;
+    if ($$.hasType('donut')) {
+        shouldShow = config.donut_label_show;
+    } else if ($$.hasType('pie')) {
+        shouldShow = config.pie_label_show;
+    }
+    // when gauge, always true
+    return shouldShow;
+};
+
+c3_chart_internal_fn.meetsArcLabelThreshold = function (ratio) {
+    var $$ = this, config = $$.config,
+        threshold = $$.hasType('donut') ? config.donut_label_threshold : config.pie_label_threshold;
+    return ratio >= threshold;
+};
+
+c3_chart_internal_fn.getArcLabelFormat = function () {
+    var $$ = this, config = $$.config,
+        format = config.pie_label_format;
+    if ($$.hasType('gauge')) {
+        format = config.gauge_label_format;
+    } else if ($$.hasType('donut')) {
+        format = config.donut_label_format;
+    }
+    return format;
+};
+
+c3_chart_internal_fn.getArcTitle = function () {
+    var $$ = this;
+    return $$.hasType('donut') ? $$.config.donut_title : "";
+};
+
+c3_chart_internal_fn.descByStartAngle = function (a, b) {
+    return a.startAngle - b.startAngle;
+};
+
+c3_chart_internal_fn.updateTargetsForArc = function (targets) {
+    var $$ = this, main = $$.main,
+        mainPieUpdate, mainPieEnter,
+        classChartArc = $$.classChartArc.bind($$),
+        classArcs = $$.classArcs.bind($$);
+    mainPieUpdate = main.select('.' + CLASS.chartArcs).selectAll('.' + CLASS.chartArc)
+        .data($$.pie(targets))
+        .attr("class", classChartArc);
+    mainPieEnter = mainPieUpdate.enter().append("g")
+        .attr("class", classChartArc);
+    mainPieEnter.append('g')
+        .attr('class', classArcs);
+    mainPieEnter.append("text")
+        .attr("dy", $$.hasType('gauge') ? "-0.35em" : ".35em")
+        .style("opacity", 0)
+        .style("text-anchor", "middle")
+        .style("pointer-events", "none");
+    // MEMO: can not keep same color..., but not bad to update color in redraw
+    //mainPieUpdate.exit().remove();
+};
+
+c3_chart_internal_fn.initArc = function () {
+    var $$ = this;
+    $$.arcs = $$.main.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.chartArcs)
+        .attr("transform", $$.getTranslate('arc'));
+    $$.arcs.append('text')
+        .attr('class', CLASS.chartArcsTitle)
+        .style("text-anchor", "middle")
+        .text($$.getArcTitle());
+};
+
+c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransform) {
+    var $$ = this, d3 = $$.d3, config = $$.config, main = $$.main,
+        mainArc;
+    mainArc = main.selectAll('.' + CLASS.arcs).selectAll('.' + CLASS.arc)
+        .data($$.arcData.bind($$));
+    mainArc.enter().append('path')
+        .attr("class", $$.classArc.bind($$))
+        .style("fill", function (d) { return $$.color(d.data); })
+        .style("cursor", function (d) { return config.data_selection_isselectable(d) ? "pointer" : null; })
+        .style("opacity", 0)
+        .each(function (d) {
+            if ($$.isGaugeType(d.data)) {
+                d.startAngle = d.endAngle = -1 * (Math.PI / 2);
+            }
+            this._current = d;
+        })
+        .on('mouseover', function (d) {
+            var updated, arcData;
+            if ($$.transiting) { // skip while transiting
+                return;
+            }
+            updated = $$.updateAngle(d);
+            arcData = $$.convertToArcData(updated);
+            // transitions
+            $$.expandArc(updated.data.id);
+            $$.toggleFocusLegend(updated.data.id, true);
+            $$.config.data_onmouseover(arcData, this);
+        })
+        .on('mousemove', function (d) {
+            var updated = $$.updateAngle(d),
+                arcData = $$.convertToArcData(updated),
+                selectedData = [arcData];
+            $$.showTooltip(selectedData, d3.mouse(this));
+        })
+        .on('mouseout', function (d) {
+            var updated, arcData;
+            if ($$.transiting) { // skip while transiting
+                return;
+            }
+            updated = $$.updateAngle(d);
+            arcData = $$.convertToArcData(updated);
+            // transitions
+            $$.unexpandArc(updated.data.id);
+            $$.revertLegend();
+            $$.hideTooltip();
+            $$.config.data_onmouseout(arcData, this);
+        })
+        .on('click', function (d, i) {
+            var updated, arcData;
+            if (!$$.toggleShape) {
+                return;
+            }
+            updated = $$.updateAngle(d);
+            arcData = $$.convertToArcData(updated);
+            $$.toggleShape(this, arcData, i); // onclick called in toogleShape()
+        });
+    mainArc
+        .attr("transform", function (d) { return !$$.isGaugeType(d.data) && withTransform ? "scale(0)" : ""; })
+        .style("opacity", function (d) { return d === this._current ? 0 : 1; })
+        .each(function () { $$.transiting = true; })
+        .transition().duration(duration)
+        .attrTween("d", function (d) {
+            var updated = $$.updateAngle(d), interpolate;
+            if (! updated) {
+                return function () { return "M 0 0"; };
+            }
+            //                if (this._current === d) {
+            //                    this._current = {
+            //                        startAngle: Math.PI*2,
+            //                        endAngle: Math.PI*2,
+            //                    };
+            //                }
+            if (isNaN(this._current.endAngle)) {
+                this._current.endAngle = this._current.startAngle;
+            }
+            interpolate = d3.interpolate(this._current, updated);
+            this._current = interpolate(0);
+            return function (t) { return $$.getArc(interpolate(t), true); };
+        })
+        .attr("transform", withTransform ? "scale(1)" : "")
+        .style("fill", function (d) {
+            return $$.levelColor ? $$.levelColor(d.data.values[0].value) : $$.color(d.data.id);
+        }) // Where gauge reading color would receive customization.
+        .style("opacity", 1)
+        .call($$.endall, function () {
+            $$.transiting = false;
+        });
+    mainArc.exit().transition().duration(durationForExit)
+        .style('opacity', 0)
+        .remove();
+    main.selectAll('.' + CLASS.chartArc).select('text')
+        .style("opacity", 0)
+        .attr('class', function (d) { return $$.isGaugeType(d.data) ? CLASS.gaugeValue : ''; })
+        .text($$.textForArcLabel.bind($$))
+        .attr("transform", $$.transformForArcLabel.bind($$))
+        .transition().duration(duration)
+        .style("opacity", function (d) { return $$.isTargetToShow(d.data.id) && $$.isArcType(d.data) ? 1 : 0; });
+    main.select('.' + CLASS.chartArcsTitle)
+        .style("opacity", $$.hasType('donut') || $$.hasType('gauge') ? 1 : 0);
+
+};
+c3_chart_internal_fn.initGauge = function () {
+    var $$ = this, config = $$.config, arcs = $$.arcs;
+    if ($$.hasType('gauge')) {
+        arcs.append('path')
+            .attr("class", CLASS.chartArcsBackground)
+            .attr("d", function () {
+                var d = {
+                    data: [{value: config.gauge_max}],
+                    startAngle: -1 * (Math.PI / 2),
+                    endAngle: Math.PI / 2
+                };
+                return $$.getArc(d, true, true);
+            });
+        arcs.append("text")
+            .attr("dy", ".75em")
+            .attr("class", CLASS.chartArcsGaugeUnit)
+            .style("text-anchor", "middle")
+            .style("pointer-events", "none")
+            .text(config.gauge_label_show ? config.gauge_units : '');
+        arcs.append("text")
+            .attr("dx", -1 * ($$.innerRadius + (($$.radius - $$.innerRadius) / 2)) + "px")
+            .attr("dy", "1.2em")
+            .attr("class", CLASS.chartArcsGaugeMin)
+            .style("text-anchor", "middle")
+            .style("pointer-events", "none")
+            .text(config.gauge_label_show ? config.gauge_min : '');
+        arcs.append("text")
+            .attr("dx", $$.innerRadius + (($$.radius - $$.innerRadius) / 2) + "px")
+            .attr("dy", "1.2em")
+            .attr("class", CLASS.chartArcsGaugeMax)
+            .style("text-anchor", "middle")
+            .style("pointer-events", "none")
+            .text(config.gauge_label_show ? config.gauge_max : '');
+    }
+};
+c3_chart_internal_fn.getGaugeLabelHeight = function () {
+    return this.config.gauge_label_show ? 20 : 0;
+};

src/axis.js

+c3_chart_internal_fn.initAxis = function () {
+    var $$ = this, config = $$.config, main = $$.main;
+    $$.axes.x = main.append("g")
+        .attr("class", CLASS.axis + ' ' + CLASS.axisX)
+        .attr("clip-path", $$.clipPathForXAxis)
+        .attr("transform", $$.getTranslate('x'))
+        .style("visibility", config.axis_x_show ? 'visible' : 'hidden');
+    $$.axes.x.append("text")
+        .attr("class", CLASS.axisXLabel)
+        .attr("transform", config.axis_rotated ? "rotate(-90)" : "")
+        .style("text-anchor", $$.textAnchorForXAxisLabel.bind($$));
+
+    $$.axes.y = main.append("g")
+        .attr("class", CLASS.axis + ' ' + CLASS.axisY)
+        .attr("clip-path", $$.clipPathForYAxis)
+        .attr("transform", $$.getTranslate('y'))
+        .style("visibility", config.axis_y_show ? 'visible' : 'hidden');
+    $$.axes.y.append("text")
+        .attr("class", CLASS.axisYLabel)
+        .attr("transform", config.axis_rotated ? "" : "rotate(-90)")
+        .style("text-anchor", $$.textAnchorForYAxisLabel.bind($$));
+
+    $$.axes.y2 = main.append("g")
+        .attr("class", CLASS.axis + ' ' + CLASS.axisY2)
+        // clip-path?
+        .attr("transform", $$.getTranslate('y2'))
+        .style("visibility", config.axis_y2_show ? 'visible' : 'hidden');
+    $$.axes.y2.append("text")
+        .attr("class", CLASS.axisY2Label)
+        .attr("transform", config.axis_rotated ? "" : "rotate(-90)")
+        .style("text-anchor", $$.textAnchorForY2AxisLabel.bind($$));
+};
+c3_chart_internal_fn.getXAxis = function (scale, orient, tickFormat, tickValues) {
+    var $$ = this, config = $$.config,
+        axis = c3_axis($$.d3, $$.isCategorized()).scale(scale).orient(orient);
+
+    if ($$.isTimeSeries() && tickValues) {
+        tickValues = tickValues.map(function (v) { return $$.parseDate(v); });
+    }
+
+    // Set tick
+    axis.tickFormat(tickFormat).tickValues(tickValues);
+    if ($$.isCategorized()) {
+        axis.tickCentered(config.axis_x_tick_centered);
+        if (isEmpty(config.axis_x_tick_culling)) {
+            config.axis_x_tick_culling = false;
+        }
+    } else {
+        // TODO: move this to c3_axis
+        axis.tickOffset = function () {
+            var edgeX = $$.getEdgeX($$.data.targets), diff = $$.x(edgeX[1]) - $$.x(edgeX[0]),
+                base = diff ? diff : (config.axis_rotated ? $$.height : $$.width);
+            return (base / $$.getMaxDataCount()) / 2;
+        };
+    }
+
+    return axis;
+};
+c3_chart_internal_fn.getYAxis = function (scale, orient, tickFormat, ticks) {
+    return c3_axis(this.d3).scale(scale).orient(orient).tickFormat(tickFormat).ticks(ticks);
+};
+c3_chart_internal_fn.getAxisId = function (id) {
+    var config = this.config;
+    return id in config.data_axes ? config.data_axes[id] : 'y';
+};
+c3_chart_internal_fn.getXAxisTickFormat = function () {
+    var $$ = this, config = $$.config,
+        format = $$.isTimeSeries() ? $$.defaultAxisTimeFormat : $$.isCategorized() ? $$.categoryName : function (v) { return v < 0 ? v.toFixed(0) : v; };
+    if (config.axis_x_tick_format) {
+        if (isFunction(config.axis_x_tick_format)) {
+            format = config.axis_x_tick_format;
+        } else if ($$.isTimeSeries()) {
+            format = function (date) {
+                return date ? $$.axisTimeFormat(config.axis_x_tick_format)(date) : "";
+            };
+        }
+    }
+    return isFunction(format) ? function (v) { return format.call($$, v); } : format;
+};
+c3_chart_internal_fn.getAxisLabelOptionByAxisId = function (axisId) {
+    var $$ = this, config = $$.config, option;
+    if (axisId === 'y') {
+        option = config.axis_y_label;
+    } else if (axisId === 'y2') {
+        option = config.axis_y2_label;
+    } else if (axisId === 'x') {
+        option = config.axis_x_label;
+    }
+    return option;
+};
+c3_chart_internal_fn.getAxisLabelText = function (axisId) {
+    var option = this.getAxisLabelOptionByAxisId(axisId);
+    return isString(option) ? option : option ? option.text : null;
+};
+c3_chart_internal_fn.setAxisLabelText = function (axisId, text) {
+    var $$ = this, config = $$.config,
+        option = $$.getAxisLabelOptionByAxisId(axisId);
+    if (isString(option)) {
+        if (axisId === 'y') {
+            config.axis_y_label = text;
+        } else if (axisId === 'y2') {
+            config.axis_y2_label = text;
+        } else if (axisId === 'x') {
+            config.axis_x_label = text;
+        }
+    } else if (option) {
+        option.text = text;
+    }
+};
+c3_chart_internal_fn.getAxisLabelPosition = function (axisId, defaultPosition) {
+    var option = this.getAxisLabelOptionByAxisId(axisId),
+        position = (option && typeof option === 'object' && option.position) ? option.position : defaultPosition;
+    return {
+        isInner: position.indexOf('inner') >= 0,
+        isOuter: position.indexOf('outer') >= 0,
+        isLeft: position.indexOf('left') >= 0,
+        isCenter: position.indexOf('center') >= 0,
+        isRight: position.indexOf('right') >= 0,
+        isTop: position.indexOf('top') >= 0,
+        isMiddle: position.indexOf('middle') >= 0,
+        isBottom: position.indexOf('bottom') >= 0
+    };
+};
+c3_chart_internal_fn.getXAxisLabelPosition = function () {
+    return this.getAxisLabelPosition('x', this.config.axis_rotated ? 'inner-top' : 'inner-right');
+};
+c3_chart_internal_fn.getYAxisLabelPosition = function () {
+    return this.getAxisLabelPosition('y', this.config.axis_rotated ? 'inner-right' : 'inner-top');
+};
+c3_chart_internal_fn.getY2AxisLabelPosition = function () {
+    return this.getAxisLabelPosition('y2', this.config.axis_rotated ? 'inner-right' : 'inner-top');
+};
+c3_chart_internal_fn.getAxisLabelPositionById = function (id) {
+    return id === 'y2' ? this.getY2AxisLabelPosition() : id === 'y' ? this.getYAxisLabelPosition() : this.getXAxisLabelPosition();
+};
+c3_chart_internal_fn.textForXAxisLabel = function () {
+    return this.getAxisLabelText('x');
+};
+c3_chart_internal_fn.textForYAxisLabel = function () {
+    return this.getAxisLabelText('y');
+};
+c3_chart_internal_fn.textForY2AxisLabel = function () {
+    return this.getAxisLabelText('y2');
+};
+c3_chart_internal_fn.xForAxisLabel = function (forHorizontal, position) {
+    var $$ = this;
+    if (forHorizontal) {
+        return position.isLeft ? 0 : position.isCenter ? $$.width / 2 : $$.width;
+    } else {
+        return position.isBottom ? -$$.height : position.isMiddle ? -$$.height / 2 : 0;
+    }
+};
+c3_chart_internal_fn.dxForAxisLabel = function (forHorizontal, position) {
+    if (forHorizontal) {
+        return position.isLeft ? "0.5em" : position.isRight ? "-0.5em" : "0";
+    } else {
+        return position.isTop ? "-0.5em" : position.isBottom ? "0.5em" : "0";
+    }
+};
+c3_chart_internal_fn.textAnchorForAxisLabel = function (forHorizontal, position) {
+    if (forHorizontal) {
+        return position.isLeft ? 'start' : position.isCenter ? 'middle' : 'end';
+    } else {
+        return position.isBottom ? 'start' : position.isMiddle ? 'middle' : 'end';
+    }
+};
+c3_chart_internal_fn.xForXAxisLabel = function () {
+    return this.xForAxisLabel(!this.config.axis_rotated, this.getXAxisLabelPosition());
+};
+c3_chart_internal_fn.xForYAxisLabel = function () {
+    return this.xForAxisLabel(this.config.axis_rotated, this.getYAxisLabelPosition());
+};
+c3_chart_internal_fn.xForY2AxisLabel = function () {
+    return this.xForAxisLabel(this.config.axis_rotated, this.getY2AxisLabelPosition());
+};
+c3_chart_internal_fn.dxForXAxisLabel = function () {
+    return this.dxForAxisLabel(!this.config.axis_rotated, this.getXAxisLabelPosition());
+};
+c3_chart_internal_fn.dxForYAxisLabel = function () {
+    return this.dxForAxisLabel(this.config.axis_rotated, this.getYAxisLabelPosition());
+};
+c3_chart_internal_fn.dxForY2AxisLabel = function () {
+    return this.dxForAxisLabel(this.config.axis_rotated, this.getY2AxisLabelPosition());
+};
+c3_chart_internal_fn.dyForXAxisLabel = function () {
+    var $$ = this, config = $$.config,
+        position = $$.getXAxisLabelPosition();
+    if (config.axis_rotated) {
+        return position.isInner ? "1.2em" : -25 - $$.getMaxTickWidth('x');
+    } else {
+        return position.isInner ? "-0.5em" : config.axis_x_height ? config.axis_x_height - 10 : "3em";
+    }
+};
+c3_chart_internal_fn.dyForYAxisLabel = function () {
+    var $$ = this,
+        position = $$.getYAxisLabelPosition();
+    if ($$.config.axis_rotated) {
+        return position.isInner ? "-0.5em" : "3em";
+    } else {
+        return position.isInner ? "1.2em" : -20 - $$.getMaxTickWidth('y');
+    }
+};
+c3_chart_internal_fn.dyForY2AxisLabel = function () {
+    var $$ = this,
+        position = $$.getY2AxisLabelPosition();
+    if ($$.config.axis_rotated) {
+        return position.isInner ? "1.2em" : "-2.2em";
+    } else {
+        return position.isInner ? "-0.5em" : 30 + this.getMaxTickWidth('y2');
+    }
+};
+c3_chart_internal_fn.textAnchorForXAxisLabel = function () {
+    var $$ = this;
+    return $$.textAnchorForAxisLabel(!$$.config.axis_rotated, $$.getXAxisLabelPosition());
+};
+c3_chart_internal_fn.textAnchorForYAxisLabel = function () {
+    var $$ = this;
+    return $$.textAnchorForAxisLabel($$.config.axis_rotated, $$.getYAxisLabelPosition());
+};
+c3_chart_internal_fn.textAnchorForY2AxisLabel = function () {
+    var $$ = this;
+    return $$.textAnchorForAxisLabel($$.config.axis_rotated, $$.getY2AxisLabelPosition());
+};
+
+c3_chart_internal_fn.xForRotatedTickText = function (r) {
+    return 10 * Math.sin(Math.PI * (r / 180));
+};
+c3_chart_internal_fn.yForRotatedTickText = function (r) {
+    return 11.5 - 2.5 * (r / 15);
+};
+c3_chart_internal_fn.rotateTickText = function (axis, transition, rotate) {
+    axis.selectAll('.tick text')
+        .style("text-anchor", "start");
+    transition.selectAll('.tick text')
+        .attr("y", this.yForRotatedTickText(rotate))
+        .attr("x", this.xForRotatedTickText(rotate))
+        .attr("transform", "rotate(" + rotate + ")");
+};
+
+c3_chart_internal_fn.getMaxTickWidth = function (id) {
+    var $$ = this, config = $$.config,
+        maxWidth = 0, targetsToShow, scale, axis;
+    if ($$.svg) {
+        targetsToShow = $$.filterTargetsToShow($$.data.targets);
+        if (id === 'y') {
+            scale = $$.y.copy().domain($$.getYDomain(targetsToShow, 'y'));
+            axis = $$.getYAxis(scale, $$.yOrient, config.axis_y_tick_format, config.axis_y_ticks);
+        } else if (id === 'y2') {
+            scale = $$.y2.copy().domain($$.getYDomain(targetsToShow, 'y2'));
+            axis = $$.getYAxis(scale, $$.y2Orient, config.axis_y2_tick_format, config.axis_y2_ticks);
+        } else {
+            scale = $$.x.copy().domain($$.getXDomain(targetsToShow));
+            axis = $$.getXAxis(scale, $$.xOrient, $$.getXAxisTickFormat(), config.axis_x_tick_values ? config.axis_x_tick_values : $$.xAxis.tickValues());
+        }
+        $$.d3.select('body').append("g").style('visibility', 'hidden').call(axis).each(function () {
+            $$.d3.select(this).selectAll('text').each(function () {
+                var box = this.getBoundingClientRect();
+                if (maxWidth < box.width) { maxWidth = box.width; }
+            });
+        }).remove();
+    }
+    $$.currentMaxTickWidth = maxWidth <= 0 ? $$.currentMaxTickWidth : maxWidth;
+    return $$.currentMaxTickWidth;
+};
+
+c3_chart_internal_fn.updateAxisLabels = function (withTransition) {
+    var $$ = this;
+    var axisXLabel = $$.main.select('.' + CLASS.axisX + ' .' + CLASS.axisXLabel),
+        axisYLabel = $$.main.select('.' + CLASS.axisY + ' .' + CLASS.axisYLabel),
+        axisY2Label = $$.main.select('.' + CLASS.axisY2 + ' .' + CLASS.axisY2Label);
+    (withTransition ? axisXLabel.transition() : axisXLabel)
+        .attr("x", $$.xForXAxisLabel.bind($$))
+        .attr("dx", $$.dxForXAxisLabel.bind($$))
+        .attr("dy", $$.dyForXAxisLabel.bind($$))
+        .text($$.textForXAxisLabel.bind($$));
+    (withTransition ? axisYLabel.transition() : axisYLabel)
+        .attr("x", $$.xForYAxisLabel.bind($$))
+        .attr("dx", $$.dxForYAxisLabel.bind($$))
+        .attr("dy", $$.dyForYAxisLabel.bind($$))
+        .text($$.textForYAxisLabel.bind($$));
+    (withTransition ? axisY2Label.transition() : axisY2Label)
+        .attr("x", $$.xForY2AxisLabel.bind($$))
+        .attr("dx", $$.dxForY2AxisLabel.bind($$))
+        .attr("dy", $$.dyForY2AxisLabel.bind($$))
+        .text($$.textForY2AxisLabel.bind($$));
+};
+
+c3_chart_internal_fn.getAxisPadding = function (padding, key, defaultValue, all) {
+    var ratio = padding.unit === 'ratio' ? all : 1;
+    return isValue(padding[key]) ? padding[key] * ratio : defaultValue;
+};
+
+c3_chart_internal_fn.generateTickValues = function (xs, tickCount) {
+    var $$ = this;
+    var tickValues = xs, targetCount, start, end, count, interval, i, tickValue;
+    if (tickCount) {
+        targetCount = isFunction(tickCount) ? tickCount() : tickCount;
+        // compute ticks according to $$.config.axis_x_tick_count
+        if (targetCount === 1) {
+            tickValues = [xs[0]];
+        } else if (targetCount === 2) {
+            tickValues = [xs[0], xs[xs.length - 1]];
+        } else if (targetCount > 2) {
+            count = targetCount - 2;
+            start = xs[0];
+            end = xs[xs.length - 1];
+            interval = (end - start) / (count + 1);
+            // re-construct uniqueXs
+            tickValues = [start];
+            for (i = 0; i < count; i++) {
+                tickValue = +start + interval * (i + 1);
+                tickValues.push($$.isTimeSeries() ? new Date(tickValue) : tickValue);
+            }
+            tickValues.push(end);
+        }
+    }
+    if (!$$.isTimeSeries()) { tickValues = tickValues.sort(function (a, b) { return a - b; }); }
+    return tickValues;
+};
+c3_chart_internal_fn.generateAxisTransitions = function (duration) {
+    var $$ = this, axes = $$.axes;
+    return {
+        axisX: duration ? axes.x.transition().duration(duration) : axes.x,
+        axisY: duration ? axes.y.transition().duration(duration) : axes.y,
+        axisY2: duration ? axes.y2.transition().duration(duration) : axes.y2,
+        axisSubX: duration ? axes.subx.transition().duration(duration) : axes.subx
+    };
+};
+c3_chart_internal_fn.redrawAxis = function (transitions, isHidden) {
+    var $$ = this;
+    $$.axes.x.style("opacity", isHidden ? 0 : 1);
+    $$.axes.y.style("opacity", isHidden ? 0 : 1);
+    $$.axes.y2.style("opacity", isHidden ? 0 : 1);
+    $$.axes.subx.style("opacity", isHidden ? 0 : 1);
+    transitions.axisX.call($$.xAxis);
+    transitions.axisY.call($$.yAxis);
+    transitions.axisY2.call($$.y2Axis);
+    transitions.axisSubX.call($$.subXAxis);
+};

src/c3.axis.js

+// Features:
+// 1. category axis
+// 2. ceil values of translate/x/y to int for half pixel antialiasing
+function c3_axis(d3, isCategory) {
+    var scale = d3.scale.linear(), orient = "bottom", innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickValues = null, tickFormat, tickArguments;
+
+    var tickOffset = 0, tickCulling = true, tickCentered;
+
+    function axisX(selection, x) {
+        selection.attr("transform", function (d) {
+            return "translate(" + Math.ceil(x(d) + tickOffset) + ", 0)";
+        });
+    }
+    function axisY(selection, y) {
+        selection.attr("transform", function (d) {
+            return "translate(0," + Math.ceil(y(d)) + ")";
+        });
+    }
+    function scaleExtent(domain) {
+        var start = domain[0], stop = domain[domain.length - 1];
+        return start < stop ? [ start, stop ] : [ stop, start ];
+    }
+    function generateTicks(scale) {
+        var i, domain, ticks = [];
+        if (scale.ticks) {
+            return scale.ticks.apply(scale, tickArguments);
+        }
+        domain = scale.domain();
+        for (i = Math.ceil(domain[0]); i < domain[1]; i++) {
+            ticks.push(i);
+        }
+        if (ticks.length > 0 && ticks[0] > 0) {
+            ticks.unshift(ticks[0] - (ticks[1] - ticks[0]));
+        }
+        return ticks;
+    }
+    function copyScale() {
+        var newScale = scale.copy(), domain;
+        if (isCategory) {
+            domain = scale.domain();
+            newScale.domain([domain[0], domain[1] - 1]);
+        }
+        return newScale;
+    }
+    function textFormatted(v) {
+        return tickFormat ? tickFormat(v) : v;
+    }
+    function axis(g) {
+        g.each(function () {
+            var g = d3.select(this);
+            var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = copyScale();
+
+            var ticks = tickValues ? tickValues : generateTicks(scale1),
+                tick = g.selectAll(".tick").data(ticks, scale1),
+                tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", 1e-6),
+                // MEMO: No exit transition. The reason is this transition affects max tick width calculation because old tick will be included in the ticks.
+                tickExit = tick.exit().remove(),
+                tickUpdate = d3.transition(tick).style("opacity", 1),
+                tickTransform, tickX;
+
+            var range = scale.rangeExtent ? scale.rangeExtent() : scaleExtent(scale.range()),
+                path = g.selectAll(".domain").data([ 0 ]),
+                pathUpdate = (path.enter().append("path").attr("class", "domain"), d3.transition(path));
+            tickEnter.append("line");
+            tickEnter.append("text");
+
+            var lineEnter = tickEnter.select("line"),
+                lineUpdate = tickUpdate.select("line"),
+                text = tick.select("text").text(textFormatted),
+                textEnter = tickEnter.select("text"),
+                textUpdate = tickUpdate.select("text");
+
+            if (isCategory) {
+                tickOffset = Math.ceil((scale1(1) - scale1(0)) / 2);
+                tickX = tickCentered ? 0 : tickOffset;
+            } else {
+                tickOffset = tickX = 0;
+            }
+
+            function tickSize(d) {
+                var tickPosition = scale(d) + tickOffset;
+                return range[0] < tickPosition && tickPosition < range[1] ? innerTickSize : 0;
+            }
+
+            switch (orient) {
+            case "bottom":
+                {
+                    tickTransform = axisX;
+                    lineEnter.attr("y2", innerTickSize);
+                    textEnter.attr("y", Math.max(innerTickSize, 0) + tickPadding);
+                    lineUpdate.attr("x1", tickX).attr("x2", tickX).attr("y2", tickSize);
+                    textUpdate.attr("x", 0).attr("y", Math.max(innerTickSize, 0) + tickPadding);
+                    text.attr("dy", ".71em").style("text-anchor", "middle");
+                    pathUpdate.attr("d", "M" + range[0] + "," + outerTickSize + "V0H" + range[1] + "V" + outerTickSize);
+                    break;
+                }
+            case "top":
+                {
+                    tickTransform = axisX;
+                    lineEnter.attr("y2", -innerTickSize);
+                    textEnter.attr("y", -(Math.max(innerTickSize, 0) + tickPadding));
+                    lineUpdate.attr("x2", 0).attr("y2", -innerTickSize);
+                    textUpdate.attr("x", 0).attr("y", -(Math.max(innerTickSize, 0) + tickPadding));
+                    text.attr("dy", "0em").style("text-anchor", "middle");
+                    pathUpdate.attr("d", "M" + range[0] + "," + -outerTickSize + "V0H" + range[1] + "V" + -outerTickSize);
+                    break;
+                }
+            case "left":
+                {
+                    tickTransform = axisY;
+                    lineEnter.attr("x2", -innerTickSize);
+                    textEnter.attr("x", -(Math.max(innerTickSize, 0) + tickPadding));
+                    lineUpdate.attr("x2", -innerTickSize).attr("y2", 0);
+                    textUpdate.attr("x", -(Math.max(innerTickSize, 0) + tickPadding)).attr("y", tickOffset);
+                    text.attr("dy", ".32em").style("text-anchor", "end");
+                    pathUpdate.attr("d", "M" + -outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + -outerTickSize);
+                    break;
+                }
+            case "right":
+                {
+                    tickTransform = axisY;
+                    lineEnter.attr("x2", innerTickSize);
+                    textEnter.attr("x", Math.max(innerTickSize, 0) + tickPadding);
+                    lineUpdate.attr("x2", innerTickSize).attr("y2", 0);
+                    textUpdate.attr("x", Math.max(innerTickSize, 0) + tickPadding).attr("y", 0);
+                    text.attr("dy", ".32em").style("text-anchor", "start");
+                    pathUpdate.attr("d", "M" + outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + outerTickSize);
+                    break;
+                }
+            }
+            if (scale1.rangeBand) {
+                var x = scale1, dx = x.rangeBand() / 2;
+                scale0 = scale1 = function (d) {
+                    return x(d) + dx;
+                };
+            } else if (scale0.rangeBand) {
+                scale0 = scale1;
+            } else {
+                tickExit.call(tickTransform, scale1);
+            }
+            tickEnter.call(tickTransform, scale0);
+            tickUpdate.call(tickTransform, scale1);
+        });
+    }
+    axis.scale = function (x) {
+        if (!arguments.length) { return scale; }
+        scale = x;
+        return axis;
+    };
+    axis.orient = function (x) {
+        if (!arguments.length) { return orient; }
+        orient = x in {top: 1, right: 1, bottom: 1, left: 1} ? x + "" : "bottom";
+        return axis;
+    };
+    axis.tickFormat = function (format) {
+        if (!arguments.length) { return tickFormat; }
+        tickFormat = format;
+        return axis;
+    };
+    axis.tickCentered = function (isCentered) {
+        if (!arguments.length) { return tickCentered; }
+        tickCentered = isCentered;
+        return axis;
+    };
+    axis.tickOffset = function () { // This will be overwritten when normal x axis
+        return tickOffset;
+    };
+    axis.ticks = function () {
+        if (!arguments.length) { return tickArguments; }
+        tickArguments = arguments;
+        return axis;
+    };
+    axis.tickCulling = function (culling) {
+        if (!arguments.length) { return tickCulling; }
+        tickCulling = culling;
+        return axis;
+    };
+    axis.tickValues = function (x) {
+        if (typeof x === 'function') {
+            tickValues = function () {
+                return x(scale.domain());
+            };
+        }
+        else {
+            if (!arguments.length) { return tickValues; }
+            tickValues = x;
+        }
+        return axis;
+    };
+    return axis;
+}

src/cache.js

+c3_chart_internal_fn.hasCaches = function (ids) {
+    for (var i = 0; i < ids.length; i++) {
+        if (! (ids[i] in this.cache)) { return false; }
+    }
+    return true;
+};
+c3_chart_internal_fn.addCache = function (id, target) {
+    this.cache[id] = this.cloneTarget(target);
+};
+c3_chart_internal_fn.getCaches = function (ids) {
+    var targets = [], i;
+    for (i = 0; i < ids.length; i++) {
+        if (ids[i] in this.cache) { targets.push(this.cloneTarget(this.cache[ids[i]])); }
+    }
+    return targets;
+};

src/category.js

+c3_chart_internal_fn.categoryName = function (i) {
+    var config = this.config;
+    return i < config.axis_x_categories.length ? config.axis_x_categories[i] : i;
+};

src/class.js

+var CLASS = c3_chart_internal_fn.CLASS = {
+    target: 'c3-target',
+    chart: 'c3-chart',
+    chartLine: 'c3-chart-line',
+    chartLines: 'c3-chart-lines',
+    chartBar: 'c3-chart-bar',
+    chartBars: 'c3-chart-bars',
+    chartText: 'c3-chart-text',
+    chartTexts: 'c3-chart-texts',
+    chartArc: 'c3-chart-arc',
+    chartArcs: 'c3-chart-arcs',
+    chartArcsTitle: 'c3-chart-arcs-title',
+    chartArcsBackground: 'c3-chart-arcs-background',
+    chartArcsGaugeUnit: 'c3-chart-arcs-gauge-unit',
+    chartArcsGaugeMax: 'c3-chart-arcs-gauge-max',
+    chartArcsGaugeMin: 'c3-chart-arcs-gauge-min',
+    selectedCircle: 'c3-selected-circle',
+    selectedCircles: 'c3-selected-circles',
+    eventRect: 'c3-event-rect',
+    eventRects: 'c3-event-rects',
+    eventRectsSingle: 'c3-event-rects-single',
+    eventRectsMultiple: 'c3-event-rects-multiple',
+    zoomRect: 'c3-zoom-rect',
+    brush: 'c3-brush',
+    focused: 'c3-focused',
+    region: 'c3-region',
+    regions: 'c3-regions',
+    tooltip: 'c3-tooltip',
+    tooltipName: 'c3-tooltip-name',
+    shape: 'c3-shape',
+    shapes: 'c3-shapes',
+    line: 'c3-line',
+    lines: 'c3-lines',
+    bar: 'c3-bar',
+    bars: 'c3-bars',
+    circle: 'c3-circle',
+    circles: 'c3-circles',
+    arc: 'c3-arc',
+    arcs: 'c3-arcs',
+    area: 'c3-area',
+    areas: 'c3-areas',
+    empty: 'c3-empty',
+    text: 'c3-text',
+    texts: 'c3-texts',
+    gaugeValue: 'c3-gauge-value',
+    grid: 'c3-grid',
+    gridLines: 'c3-grid-lines',
+    xgrid: 'c3-xgrid',
+    xgrids: 'c3-xgrids',
+    xgridLine: 'c3-xgrid-line',
+    xgridLines: 'c3-xgrid-lines',
+    xgridFocus: 'c3-xgrid-focus',
+    ygrid: 'c3-ygrid',
+    ygrids: 'c3-ygrids',
+    ygridLine: 'c3-ygrid-line',
+    ygridLines: 'c3-ygrid-lines',
+    axis: 'c3-axis',
+    axisX: 'c3-axis-x',
+    axisXLabel: 'c3-axis-x-label',
+    axisY: 'c3-axis-y',
+    axisYLabel: 'c3-axis-y-label',
+    axisY2: 'c3-axis-y2',
+    axisY2Label: 'c3-axis-y2-label',
+    legendBackground: 'c3-legend-background',
+    legendItem: 'c3-legend-item',
+    legendItemEvent: 'c3-legend-item-event',
+    legendItemTile: 'c3-legend-item-tile',
+    legendItemHidden: 'c3-legend-item-hidden',
+    legendItemFocused: 'c3-legend-item-focused',
+    dragarea: 'c3-dragarea',
+    EXPANDED: '_expanded_',
+    SELECTED: '_selected_',
+    INCLUDED: '_included_'
+};
+c3_chart_internal_fn.generateClass = function (prefix, targetId) {
+    return " " + prefix + " " + prefix + this.getTargetSelectorSuffix(targetId);
+};
+c3_chart_internal_fn.classText = function (d) {
+    return this.generateClass(CLASS.text, d.index);
+};
+c3_chart_internal_fn.classTexts = function (d) {
+    return this.generateClass(CLASS.texts, d.id);
+};
+c3_chart_internal_fn.classShape = function (d) {
+    return this.generateClass(CLASS.shape, d.index);
+};
+c3_chart_internal_fn.classShapes = function (d) {
+    return this.generateClass(CLASS.shapes, d.id);
+};
+c3_chart_internal_fn.classLine = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.line, d.id);
+};
+c3_chart_internal_fn.classLines = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.lines, d.id);
+};
+c3_chart_internal_fn.classCircle = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.circle, d.index);
+};
+c3_chart_internal_fn.classCircles = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.circles, d.id);
+};
+c3_chart_internal_fn.classBar = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.bar, d.index);
+};
+c3_chart_internal_fn.classBars = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.bars, d.id);
+};
+c3_chart_internal_fn.classArc = function (d) {
+    return this.classShape(d.data) + this.generateClass(CLASS.arc, d.data.id);
+};
+c3_chart_internal_fn.classArcs = function (d) {
+    return this.classShapes(d.data) + this.generateClass(CLASS.arcs, d.data.id);
+};
+c3_chart_internal_fn.classArea = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.area, d.id);
+};
+c3_chart_internal_fn.classAreas = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.areas, d.id);
+};
+c3_chart_internal_fn.classRegion = function (d, i) {
+    return this.generateClass(CLASS.region, i) + ' ' + ('class' in d ? d.class : '');
+};
+c3_chart_internal_fn.classEvent = function (d) {
+    return this.generateClass(CLASS.eventRect, d.index);
+};
+c3_chart_internal_fn.classTarget = function (id) {
+    var $$ = this;
+    var additionalClassSuffix = $$.config.data_classes[id], additionalClass = '';
+    if (additionalClassSuffix) {
+        additionalClass = ' ' + CLASS.target + '-' + additionalClassSuffix;
+    }
+    return $$.generateClass(CLASS.target, id) + additionalClass;
+};
+c3_chart_internal_fn.classChartText = function (d) {
+    return CLASS.chartText + this.classTarget(d.id);
+};
+c3_chart_internal_fn.classChartLine = function (d) {
+    return CLASS.chartLine + this.classTarget(d.id);
+};
+c3_chart_internal_fn.classChartBar = function (d) {
+    return CLASS.chartBar + this.classTarget(d.id);
+};
+c3_chart_internal_fn.classChartArc = function (d) {
+    return CLASS.chartArc + this.classTarget(d.data.id);
+};
+c3_chart_internal_fn.getTargetSelectorSuffix = function (targetId) {
+    return targetId || targetId === 0 ? '-' + (targetId.replace ? targetId.replace(/([^a-zA-Z0-9-_])/g, '-') : targetId) : '';
+};
+c3_chart_internal_fn.selectorTarget = function (id) {
+    return '.' + CLASS.target + this.getTargetSelectorSuffix(id);
+};
+c3_chart_internal_fn.selectorTargets = function (ids) {
+    var $$ = this;
+    return ids.length ? ids.map(function (id) { return $$.selectorTarget(id); }) : null;
+};
+c3_chart_internal_fn.selectorLegend = function (id) {
+    return '.' + CLASS.legendItem + this.getTargetSelectorSuffix(id);
+};
+c3_chart_internal_fn.selectorLegends = function (ids) {
+    var $$ = this;
+    return ids.length ? ids.map(function (id) { return $$.selectorLegend(id); }) : null;
+};

src/clip.js

+c3_chart_internal_fn.getClipPath = function (id) {
+    var isIE9 = window.navigator.appVersion.toLowerCase().indexOf("msie 9.") >= 0;
+    return "url(" + (isIE9 ? "" : document.URL.split('#')[0]) + "#" + id + ")";
+};
+c3_chart_internal_fn.getAxisClipX = function (forHorizontal) {
+    // axis line width + padding for left
+    return forHorizontal ? -(1 + 30) : -(this.margin.left - 1);
+};
+c3_chart_internal_fn.getAxisClipY = function (forHorizontal) {
+    return forHorizontal ? -20 : -4;
+};
+c3_chart_internal_fn.getXAxisClipX = function () {
+    var $$ = this;
+    return $$.getAxisClipX(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getXAxisClipY = function () {
+    var $$ = this;
+    return $$.getAxisClipY(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipX = function () {
+    var $$ = this;
+    return $$.getAxisClipX($$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipY = function () {
+    var $$ = this;
+    return $$.getAxisClipY($$.config.axis_rotated);
+};
+c3_chart_internal_fn.getAxisClipWidth = function (forHorizontal) {
+    var $$ = this;
+    // width + axis line width + padding for left/right
+    return forHorizontal ? $$.width + 2 + 30 + 30 : $$.margin.left + 20;
+};
+c3_chart_internal_fn.getAxisClipHeight = function (forHorizontal) {
+    var $$ = this, config = $$.config;
+    return forHorizontal ? (config.axis_x_height ? config.axis_x_height : 0) + 80 : $$.height + 8;
+};
+c3_chart_internal_fn.getXAxisClipWidth = function () {
+    var $$ = this;
+    return $$.getAxisClipWidth(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getXAxisClipHeight = function () {
+    var $$ = this;
+    return $$.getAxisClipHeight(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipWidth = function () {
+    var $$ = this;
+    return $$.getAxisClipWidth($$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipHeight = function () {
+    var $$ = this;
+    return $$.getAxisClipHeight($$.config.axis_rotated);
+};

src/color.js

+c3_chart_internal_fn.generateColor = function () {
+    var $$ = this, config = $$.config, d3 = $$.d3,
+        colors = config.data_colors,
+        pattern = notEmpty(config.color_pattern) ? config.color_pattern : d3.scale.category10().range(),
+        callback = config.data_color,
+        ids = [];
+
+    return function (d) {
+        var id = d.id || d, color;
+
+        // if callback function is provided
+        if (colors[id] instanceof Function) {
+            color = colors[id](d);
+        }
+        // if specified, choose that color
+        else if (colors[id]) {
+            color = colors[id];
+        }
+        // if not specified, choose from pattern
+        else {
+            if (ids.indexOf(id) < 0) { ids.push(id); }
+            color = pattern[ids.indexOf(id) % pattern.length];
+            colors[id] = color;
+        }
+        return callback instanceof Function ? callback(color, d) : color;
+    };
+};
+c3_chart_internal_fn.generateLevelColor = function () {
+    var $$ = this, config = $$.config,
+        colors = config.color_pattern,
+        threshold = config.color_threshold,
+        asValue = threshold.unit === 'value',
+        values = threshold.values && threshold.values.length ? threshold.values : [],
+        max = threshold.max || 100;
+    return notEmpty(config.color_threshold) ? function (value) {
+        var i, v, color = colors[colors.length - 1];
+        for (i = 0; i < values.length; i++) {
+            v = asValue ? value : (value * 100 / max);
+            if (v < values[i]) {
+                color = colors[i];
+                break;
+            }
+        }
+        return color;
+    } : null;
+};

src/config.js

+c3_chart_internal_fn.getDefaultConfig = function () {
+    var config = {
+        bindto: '#chart',
+        size_width: undefined,
+        size_height: undefined,
+        padding_left: undefined,
+        padding_right: undefined,
+        padding_top: undefined,
+        padding_bottom: undefined,
+        zoom_enabled: false,
+        zoom_extent: undefined,
+        zoom_privileged: false,
+        zoom_onzoom: function () {},
+        interaction_enabled: true,
+        onmouseover: function () {},
+        onmouseout: function () {},
+        onresize: function () {},
+        onresized: function () {},
+        transition_duration: 350,
+        data_x: undefined,
+        data_xs: {},
+        data_xFormat: '%Y-%m-%d',
+        data_xLocaltime: true,
+        data_idConverter: function (id) { return id; },
+        data_names: {},
+        data_classes: {},
+        data_groups: [],
+        data_axes: {},
+        data_type: undefined,
+        data_types: {},
+        data_labels: {},
+        data_order: 'desc',
+        data_regions: {},
+        data_color: undefined,
+        data_colors: {},
+        data_hide: false,
+        data_filter: undefined,
+        data_selection_enabled: false,
+        data_selection_grouped: false,
+        data_selection_isselectable: function () { return true; },
+        data_selection_multiple: true,
+        data_onclick: function () {},
+        data_onmouseover: function () {},
+        data_onmouseout: function () {},
+        data_onselected: function () {},
+        data_onunselected: function () {},
+        data_ondragstart: function () {},
+        data_ondragend: function () {},
+        data_url: undefined,
+        data_json: undefined,
+        data_rows: undefined,
+        data_columns: undefined,
+        data_mimeType: undefined,
+        data_keys: undefined,
+        // configuration for no plot-able data supplied.
+        data_empty_label_text: "",
+        // subchart
+        subchart_show: false,
+        subchart_size_height: 60,
+        subchart_onbrush: function () {},
+        // color
+        color_pattern: [],
+        color_threshold: {},
+        // legend
+        legend_show: true,
+        legend_position: 'bottom',
+        legend_inset_anchor: 'top-left',
+        legend_inset_x: 10,
+        legend_inset_y: 0,
+        legend_inset_step: undefined,
+        legend_item_onclick: undefined,
+        legend_item_onmouseover: undefined,
+        legend_item_onmouseout: undefined,
+        legend_equally: false,
+        // axis
+        axis_rotated: false,
+        axis_x_show: true,
+        axis_x_type: 'indexed',
+        axis_x_localtime: true,
+        axis_x_categories: [],
+        axis_x_tick_centered: false,
+        axis_x_tick_format: undefined,
+        axis_x_tick_culling: {},
+        axis_x_tick_culling_max: 10,
+        axis_x_tick_count: undefined,
+        axis_x_tick_fit: true,
+        axis_x_tick_values: null,
+        axis_x_tick_rotate: undefined,
+        axis_x_tick_outer: true,
+        axis_x_max: undefined,
+        axis_x_min: undefined,
+        axis_x_padding: {},
+        axis_x_height: undefined,
+        axis_x_default: undefined,
+        axis_x_label: {},
+        axis_y_show: true,
+        axis_y_max: undefined,
+        axis_y_min: undefined,
+        axis_y_center: undefined,
+        axis_y_label: {},
+        axis_y_tick_format: undefined,
+        axis_y_tick_outer: true,
+        axis_y_padding: {},
+        axis_y_ticks: 10,
+        axis_y_default: undefined,
+        axis_y2_show: false,
+        axis_y2_max: undefined,
+        axis_y2_min: undefined,
+        axis_y2_center: undefined,
+        axis_y2_label: {},
+        axis_y2_tick_format: undefined,
+        axis_y2_tick_outer: true,
+        axis_y2_padding: {},
+        axis_y2_ticks: 10,
+        axis_y2_default: undefined,
+        // grid
+        grid_x_show: false,
+        grid_x_type: 'tick',
+        grid_x_lines: [],
+        grid_y_show: false,
+        // not used
+        // grid_y_type: 'tick',
+        grid_y_lines: [],
+        grid_y_ticks: 10,
+        grid_focus_show: true,
+        grid_lines_front: true,
+        // point - point of each data
+        point_show: true,
+        point_r: 2.5,
+        point_focus_expand_enabled: true,
+        point_focus_expand_r: undefined,
+        point_select_r: undefined,
+        line_connect_null: false,
+        // bar
+        bar_width: undefined,
+        bar_width_ratio: 0.6,
+        bar_width_max: undefined,
+        bar_zerobased: true,
+        // area
+        area_zerobased: true,
+        // pie
+        pie_label_show: true,
+        pie_label_format: undefined,
+        pie_label_threshold: 0.05,
+        pie_sort: true,
+        pie_expand: true,
+        // gauge
+        gauge_label_show: true,
+        gauge_label_format: undefined,
+        gauge_expand: true,
+        gauge_min: 0,
+        gauge_max: 100,
+        gauge_units: undefined,
+        gauge_width: undefined,
+        // donut
+        donut_label_show: true,
+        donut_label_format: undefined,
+        donut_label_threshold: 0.05,
+        donut_width: undefined,
+        donut_sort: true,
+        donut_expand: true,
+        donut_title: "",
+        // region - region to change style
+        regions: [],
+        // tooltip - show when mouseover on each data
+        tooltip_show: true,
+        tooltip_grouped: true,
+        tooltip_format_title: undefined,
+        tooltip_format_name: undefined,
+        tooltip_format_value: undefined,
+        tooltip_contents: function (d, defaultTitleFormat, defaultValueFormat, color) {
+            return this.getTooltipContent ? this.getTooltipContent(d, defaultTitleFormat, defaultValueFormat, color) : '';
+        },
+        tooltip_init_show: false,
+        tooltip_init_x: 0,
+        tooltip_init_position: {top: '0px', left: '50px'}
+    };
+
+    Object.keys(this.additionalConfig).forEach(function (key) {
+        config[key] = this.additionalConfig[key];
+    }, this);
+
+    return config;
+};
+c3_chart_internal_fn.additionalConfig = {};
+
+c3_chart_internal_fn.loadConfig = function (config) {
+    var this_config = this.config, target, keys, read;
+    function find() {
+        var key = keys.shift();
+//        console.log("key =>", key, ", target =>", target);
+        if (key && target && typeof target === 'object' && key in target) {
+            target = target[key];
+            return find();
+        }
+        else if (!key) {
+            return target;
+        }
+        else {
+            return undefined;
+        }
+    }
+    Object.keys(this_config).forEach(function (key) {
+        target = config;
+        keys = key.split('_');
+        read = find();
+//        console.log("CONFIG : ", key, read);
+        if (isDefined(read)) {
+            this_config[key] = read;
+        }
+    });
+};

src/core.js

+var c3 = { version: "0.3.0" };
+
+var c3_chart_fn, c3_chart_internal_fn;
+
+function Chart(config) {
+    var $$ = this.internal = new ChartInternal(this);
+    $$.loadConfig(config);
+    $$.init();
+
+    // bind "this" to nested API
+    (function bindThis(fn, target, argThis) {
+        for (var key in fn) {
+            target[key] = fn[key].bind(argThis);
+            if (Object.keys(fn[key]).length > 0) {
+                bindThis(fn[key], target[key], argThis);
+            }
+        }
+    })(c3_chart_fn, this, this);
+}
+
+function ChartInternal(api) {
+    var $$ = this;
+    $$.d3 = window.d3 ? window.d3 : typeof require !== 'undefined' ? require("d3") : undefined;
+    $$.api = api;
+    $$.config = $$.getDefaultConfig();
+    $$.data = {};
+    $$.cache = {};
+    $$.axes = {};
+}
+
+c3.generate = function (config) {
+    return new Chart(config);
+};
+
+c3.chart = {
+    fn: Chart.prototype,
+    internal: {
+        fn: ChartInternal.prototype
+    }
+};
+c3_chart_fn = c3.chart.fn;
+c3_chart_internal_fn = c3.chart.internal.fn;
+
+
+c3_chart_internal_fn.init = function () {
+    var $$ = this, config = $$.config;
+
+    $$.initParams();
+
+    if (config.data_url) {
+        $$.convertUrlToData(config.data_url, config.data_mimeType, config.data_keys, $$.initWithData);
+    }
+    else if (config.data_json) {
+        $$.initWithData($$.convertJsonToData(config.data_json, config.data_keys));
+    }
+    else if (config.data_rows) {
+        $$.initWithData($$.convertRowsToData(config.data_rows));
+    }
+    else if (config.data_columns) {
+        $$.initWithData($$.convertColumnsToData(config.data_columns));
+    }
+    else {
+        throw Error('url or json or rows or columns is required.');
+    }
+};
+
+c3_chart_internal_fn.initParams = function () {
+    var $$ = this, d3 = $$.d3, config = $$.config;
+
+    // MEMO: clipId needs to be unique because it conflicts when multiple charts exist
+    $$.clipId = "c3-" + (+new Date()) + '-clip',
+    $$.clipIdForXAxis = $$.clipId + '-xaxis',
+    $$.clipIdForYAxis = $$.clipId + '-yaxis',
+    $$.clipPath = $$.getClipPath($$.clipId),
+    $$.clipPathForXAxis = $$.getClipPath($$.clipIdForXAxis),
+    $$.clipPathForYAxis = $$.getClipPath($$.clipIdForYAxis);
+
+    $$.dragStart = null;
+    $$.dragging = false;
+    $$.cancelClick = false;
+    $$.mouseover = false;
+    $$.transiting = false;
+
+    $$.color = $$.generateColor();
+    $$.levelColor = $$.generateLevelColor();
+
+    $$.dataTimeFormat = config.data_xLocaltime ? d3.time.format : d3.time.format.utc;
+    $$.axisTimeFormat = config.axis_x_localtime ? d3.time.format : d3.time.format.utc;
+    $$.defaultAxisTimeFormat = $$.axisTimeFormat.multi([
+        [".%L", function (d) { return d.getMilliseconds(); }],
+        [":%S", function (d) { return d.getSeconds(); }],
+        ["%I:%M", function (d) { return d.getMinutes(); }],
+        ["%I %p", function (d) { return d.getHours(); }],
+        ["%-m/%-d", function (d) { return d.getDay() && d.getDate() !== 1; }],
+        ["%-m/%-d", function (d) { return d.getDate() !== 1; }],
+        ["%-m/%-d", function (d) { return d.getMonth(); }],
+        ["%Y/%-m/%-d", function () { return true; }]
+    ]);
+
+    $$.hiddenTargetIds = [];
+    $$.hiddenLegendIds = [];
+
+    $$.xOrient = config.axis_rotated ? "left" : "bottom";
+    $$.yOrient = config.axis_rotated ? "bottom" : "left";
+    $$.y2Orient = config.axis_rotated ? "top" : "right";
+    $$.subXOrient = config.axis_rotated ? "left" : "bottom";
+
+    $$.isLegendRight = config.legend_position === 'right';
+    $$.isLegendInset = config.legend_position === 'inset';
+    $$.isLegendTop = config.legend_inset_anchor === 'top-left' || config.legend_inset_anchor === 'top-right';
+    $$.isLegendLeft = config.legend_inset_anchor === 'top-left' || config.legend_inset_anchor === 'bottom-left';
+    $$.legendStep = 0;
+    $$.legendItemWidth = 0;
+    $$.legendItemHeight = 0;
+    $$.legendOpacityForHidden = 0.15;
+
+    $$.currentMaxTickWidth = 0;
+
+    $$.rotated_padding_left = 30;
+    $$.rotated_padding_right = config.axis_rotated && !config.axis_x_show ? 0 : 30;
+    $$.rotated_padding_top = 5;
+
+    $$.withoutFadeIn = {};
+
+    $$.axes.subx = d3.selectAll([]); // needs when excluding subchart.js
+};
+
+c3_chart_internal_fn.initWithData = function (data) {
+    var $$ = this, d3 = $$.d3, config = $$.config;
+    var main, binding = true;
+
+    if ($$.initPie) { $$.initPie(); }
+    if ($$.initBrush) { $$.initBrush(); }
+    if ($$.initZoom) { $$.initZoom(); }
+
+    $$.selectChart = d3.select(config.bindto);
+    if ($$.selectChart.empty()) {
+        $$.selectChart = d3.select(document.createElement('div')).style('opacity', 0);
+        $$.observeInserted($$.selectChart);
+        binding = false;
+    }
+    $$.selectChart.html("").classed("c3", true);
+
+    // Init data as targets
+    $$.data.xs = {};
+    $$.data.targets = $$.convertDataToTargets(data);
+
+    if (config.data_filter) {
+        $$.data.targets = $$.data.targets.filter(config.data_filter);
+    }
+
+    // Set targets to hide if needed
+    if (config.data_hide) {
+        $$.addHiddenTargetIds(config.data_hide === true ? $$.mapToIds($$.data.targets) : config.data_hide);
+    }
+
+    // when gauge, hide legend // TODO: fix
+    if ($$.hasType('gauge')) {
+        config.legend_show = false;
+    }
+
+    // Init sizes and scales
+    $$.updateSizes();
+    $$.updateScales();
+
+    // Set domains for each scale
+    $$.x.domain(d3.extent($$.getXDomain($$.data.targets)));
+    $$.y.domain($$.getYDomain($$.data.targets, 'y'));
+    $$.y2.domain($$.getYDomain($$.data.targets, 'y2'));
+    $$.subX.domain($$.x.domain());
+    $$.subY.domain($$.y.domain());
+    $$.subY2.domain($$.y2.domain());
+
+    // Save original x domain for zoom update
+    $$.orgXDomain = $$.x.domain();
+
+    // Set initialized scales to brush and zoom
+    if ($$.brush) { $$.brush.scale($$.subX); }
+    if (config.zoom_enabled) { $$.zoom.scale($$.x); }
+
+    /*-- Basic Elements --*/
+
+    // Define svgs
+    $$.svg = $$.selectChart.append("svg")
+        .style("overflow", "hidden")
+        .on('mouseenter', function () { return config.onmouseover.call($$); })
+        .on('mouseleave', function () { return config.onmouseout.call($$); });
+
+    // Define defs
+    $$.defs = $$.svg.append("defs");
+    $$.defs.append("clipPath").attr("id", $$.clipId).append("rect");
+    $$.defs.append("clipPath").attr("id", $$.clipIdForXAxis).append("rect");
+    $$.defs.append("clipPath").attr("id", $$.clipIdForYAxis).append("rect");
+    $$.updateSvgSize();
+
+    // Define regions
+    main = $$.main = $$.svg.append("g").attr("transform", $$.getTranslate('main'));
+
+    if ($$.initSubchart) { $$.initSubchart(); }
+    if ($$.initTooltip) { $$.initTooltip(); }
+    if ($$.initLegend) { $$.initLegend(); }
+
+    /*-- Main Region --*/
+
+    // text when empty
+    main.append("text")
+        .attr("class", CLASS.text + ' ' + CLASS.empty)
+        .attr("text-anchor", "middle") // horizontal centering of text at x position in all browsers.
+        .attr("dominant-baseline", "middle"); // vertical centering of text at y position in all browsers, except IE.
+
+    // Regions
+    $$.initRegion();
+
+    // Grids
+    $$.initGrid();
+
+    // Define g for chart area
+    main.append('g')
+        .attr("clip-path", $$.clipPath)
+        .attr('class', CLASS.chart);
+
+    // Grid lines
+    if (config.grid_lines_front) { $$.initGridLines(); }
+
+    // Cover whole with rects for events
+    $$.initEventRect();
+
+    // Define g for bar chart area
+    if ($$.initBar) { $$.initBar(); }
+
+    // Define g for line chart area
+    if ($$.initLine) { $$.initLine(); }
+
+    // Define g for arc chart area
+    if ($$.initArc) { $$.initArc(); }
+    if ($$.initGauge) { $$.initGauge(); }
+
+    // Define g for text area
+    if ($$.initText) { $$.initText(); }
+
+    // if zoom privileged, insert rect to forefront
+    // TODO: is this needed?
+    main.insert('rect', config.zoom_privileged ? null : 'g.' + CLASS.regions)
+        .attr('class', CLASS.zoomRect)
+        .attr('width', $$.width)
+        .attr('height', $$.height)
+        .style('opacity', 0)
+        .on("dblclick.zoom", null);
+
+    // Set default extent if defined
+    if (config.axis_x_default) {
+        $$.brush.extent(isFunction(config.axis_x_default) ? config.axis_x_default($$.getXDomain()) : config.axis_x_default);
+    }
+
+    // Add Axis
+    $$.initAxis();
+
+    // Set targets
+    $$.updateTargets($$.data.targets);
+
+    // Draw with targets
+    if (binding) {
+        $$.updateDimension();
+        $$.redraw({
+            withTransform: true,
+            withUpdateXDomain: true,
+            withUpdateOrgXDomain: true,
+            withTransitionForAxis: false
+        });
+    }
+
+    // Bind resize event
+    if (window.onresize == null) {
+        window.onresize = $$.generateResize();
+    }
+    if (window.onresize.add) {
+        window.onresize.add(function () {
+            config.onresize.call($$);
+        });
+        window.onresize.add(function () {
+            $$.api.flush();
+        });
+        window.onresize.add(function () {
+            config.onresized.call($$);
+        });
+    }
+
+    // export element of the chart
+    $$.api.element = $$.selectChart.node();
+};
+
+c3_chart_internal_fn.smoothLines = function (el, type) {
+    var $$ = this;
+    if (type === 'grid') {
+        el.each(function () {
+            var g = $$.d3.select(this),
+                x1 = g.attr('x1'),
+                x2 = g.attr('x2'),
+                y1 = g.attr('y1'),
+                y2 = g.attr('y2');
+            g.attr({
+                'x1': Math.ceil(x1),
+                'x2': Math.ceil(x2),
+                'y1': Math.ceil(y1),
+                'y2': Math.ceil(y2)
+            });
+        });
+    }
+};
+
+
+c3_chart_internal_fn.updateSizes = function () {
+    var $$ = this, config = $$.config;
+    var legendHeight = $$.legend ? $$.getLegendHeight() : 0,
+        legendWidth = $$.legend ? $$.getLegendWidth() : 0,
+        legendHeightForBottom = $$.isLegendRight || $$.isLegendInset ? 0 : legendHeight,
+        hasArc = $$.hasArcType(),
+        xAxisHeight = config.axis_rotated || hasArc ? 0 : $$.getHorizontalAxisHeight('x'),
+        subchartHeight = config.subchart_show && !hasArc ? (config.subchart_size_height + xAxisHeight) : 0;
+
+    $$.currentWidth = $$.getCurrentWidth();
+    $$.currentHeight = $$.getCurrentHeight();
+
+    // for main
+    $$.margin = config.axis_rotated ? {
+        top: $$.getHorizontalAxisHeight('y2') + $$.getCurrentPaddingTop(),
+        right: hasArc ? 0 : $$.getCurrentPaddingRight(),
+        bottom: $$.getHorizontalAxisHeight('y') + legendHeightForBottom + $$.getCurrentPaddingBottom(),
+        left: subchartHeight + (hasArc ? 0 : $$.getCurrentPaddingLeft())
+    } : {
+        top: 4 + $$.getCurrentPaddingTop(), // for top tick text
+        right: hasArc ? 0 : $$.getCurrentPaddingRight(),
+        bottom: xAxisHeight + subchartHeight + legendHeightForBottom + $$.getCurrentPaddingBottom(),
+        left: hasArc ? 0 : $$.getCurrentPaddingLeft()
+    };
+
+    // for subchart
+    $$.margin2 = config.axis_rotated ? {
+        top: $$.margin.top,
+        right: NaN,
+        bottom: 20 + legendHeightForBottom,
+        left: $$.rotated_padding_left
+    } : {
+        top: $$.currentHeight - subchartHeight - legendHeightForBottom,
+        right: NaN,
+        bottom: xAxisHeight + legendHeightForBottom,
+        left: $$.margin.left
+    };
+
+    // for legend
+    $$.margin3 = {
+        top: 0,
+        right: NaN,
+        bottom: 0,
+        left: 0
+    };
+    if ($$.updateSizeForLegend) { $$.updateSizeForLegend(legendHeight, legendWidth); }
+
+    $$.width = $$.currentWidth - $$.margin.left - $$.margin.right;
+    $$.height = $$.currentHeight - $$.margin.top - $$.margin.bottom;
+    if ($$.width < 0) { $$.width = 0; }
+    if ($$.height < 0) { $$.height = 0; }
+
+    $$.width2 = config.axis_rotated ? $$.margin.left - $$.rotated_padding_left - $$.rotated_padding_right : $$.width;
+    $$.height2 = config.axis_rotated ? $$.height : $$.currentHeight - $$.margin2.top - $$.margin2.bottom;
+    if ($$.width2 < 0) { $$.width2 = 0; }
+    if ($$.height2 < 0) { $$.height2 = 0; }
+
+    // for arc
+    $$.arcWidth = $$.width - ($$.isLegendRight ? legendWidth + 10 : 0);
+    $$.arcHeight = $$.height - ($$.isLegendRight ? 0 : 10);
+    if ($$.hasType('gauge')) {
+        $$.arcHeight += $$.height - $$.getGaugeLabelHeight();
+    }
+    if ($$.updateRadius) { $$.updateRadius(); }
+
+    if ($$.isLegendRight && hasArc) {
+        $$.margin3.left = $$.arcWidth / 2 + $$.radiusExpanded * 1.1;
+    }
+};
+
+c3_chart_internal_fn.updateTargets = function (targets) {
+    var $$ = this, config = $$.config;
+
+    /*-- Main --*/
+
+    //-- Text --//
+    $$.updateTargetsForText(targets);
+
+    //-- Bar --//
+    $$.updateTargetsForBar(targets);
+
+    //-- Line --//
+    $$.updateTargetsForLine(targets);
+
+    //-- Arc --//
+    if ($$.updateTargetsForArc) { $$.updateTargetsForArc(targets); }
+    if ($$.updateTargetsForSubchart) { $$.updateTargetsForSubchart(targets); }
+
+    /*-- Show --*/
+
+    // Fade-in each chart
+    $$.svg.selectAll('.' + CLASS.target).filter(function (d) { return $$.isTargetToShow(d.id); })
+      .transition().duration(config.transition_duration)
+        .style("opacity", 1);
+};
+
+c3_chart_internal_fn.redraw = function (options, transitions) {
+    var $$ = this, main = $$.main, d3 = $$.d3, config = $$.config;
+    var areaIndices = $$.getShapeIndices($$.isAreaType), barIndices = $$.getShapeIndices($$.isBarType), lineIndices = $$.getShapeIndices($$.isLineType);
+    var withY, withSubchart, withTransition, withTransitionForExit, withTransitionForAxis, withTransform, withUpdateXDomain, withUpdateOrgXDomain, withLegend;
+    var hideAxis = $$.hasArcType();
+    var drawArea, drawBar, drawLine, xForText, yForText;
+    var duration, durationForExit, durationForAxis;
+    var waitForDraw, flow;
+    var targetsToShow = $$.filterTargetsToShow($$.data.targets), tickValues, i, intervalForCulling;
+    var xv = $$.xv.bind($$),
+        cx = ($$.config.axis_rotated ? $$.circleY : $$.circleX).bind($$),
+        cy = ($$.config.axis_rotated ? $$.circleX : $$.circleY).bind($$);
+
+    options = options || {};
+    withY = getOption(options, "withY", true);
+    withSubchart = getOption(options, "withSubchart", true);
+    withTransition = getOption(options, "withTransition", true);
+    withTransform = getOption(options, "withTransform", false);
+    withUpdateXDomain = getOption(options, "withUpdateXDomain", false);
+    withUpdateOrgXDomain = getOption(options, "withUpdateOrgXDomain", false);
+    withLegend = getOption(options, "withLegend", false);
+    withTransitionForExit = getOption(options, "withTransitionForExit", withTransition);
+    withTransitionForAxis = getOption(options, "withTransitionForAxis", withTransition);
+
+    duration = withTransition ? config.transition_duration : 0;
+    durationForExit = withTransitionForExit ? duration : 0;
+    durationForAxis = withTransitionForAxis ? duration : 0;
+
+    transitions = transitions || $$.generateAxisTransitions(durationForAxis);
+
+    // update legend and transform each g
+    if (withLegend && config.legend_show) {
+        $$.updateLegend($$.mapToIds($$.data.targets), options, transitions);
+    }
+
+    // MEMO: needed for grids calculation
+    if ($$.isCategorized() && targetsToShow.length === 0) {
+        $$.x.domain([0, $$.axes.x.selectAll('.tick').size()]);
+    }
+
+    if (targetsToShow.length) {
+        $$.updateXDomain(targetsToShow, withUpdateXDomain, withUpdateOrgXDomain);
+        // update axis tick values according to options
+        if (!config.axis_x_tick_values && (config.axis_x_tick_fit || config.axis_x_tick_count)) {
+            tickValues = $$.generateTickValues($$.mapTargetsToUniqueXs(targetsToShow), config.axis_x_tick_count);
+            $$.xAxis.tickValues(tickValues);
+            $$.subXAxis.tickValues(tickValues);
+        }
+    } else {
+        $$.xAxis.tickValues([]);
+        $$.subXAxis.tickValues([]);
+    }
+
+    $$.y.domain($$.getYDomain(targetsToShow, 'y'));
+    $$.y2.domain($$.getYDomain(targetsToShow, 'y2'));
+
+    // axes
+    $$.redrawAxis(transitions, hideAxis);
+
+    // Update axis label
+    $$.updateAxisLabels(withTransition);
+
+    // show/hide if manual culling needed
+    if (withUpdateXDomain && targetsToShow.length) {
+        if (config.axis_x_tick_culling && tickValues) {
+            for (i = 1; i < tickValues.length; i++) {
+                if (tickValues.length / i < config.axis_x_tick_culling_max) {
+                    intervalForCulling = i;
+                    break;
+                }
+            }
+            $$.svg.selectAll('.' + CLASS.axisX + ' .tick text').each(function (e) {
+                var index = tickValues.indexOf(e);
+                if (index >= 0) {
+                    d3.select(this).style('display', index % intervalForCulling ? 'none' : 'block');
+                }
+            });
+        } else {
+            $$.svg.selectAll('.' + CLASS.axisX + ' .tick text').style('display', 'block');
+        }
+    }
+
+    // rotate tick text if needed
+    if (!config.axis_rotated && config.axis_x_tick_rotate) {
+        $$.rotateTickText($$.axes.x, transitions.axisX, config.axis_x_tick_rotate);
+    }
+
+    // setup drawer - MEMO: these must be called after axis updated
+    drawArea = $$.generateDrawArea ? $$.generateDrawArea(areaIndices, false) : undefined;
+    drawBar = $$.generateDrawBar ? $$.generateDrawBar(barIndices) : undefined;
+    drawLine = $$.generateDrawLine ? $$.generateDrawLine(lineIndices, false) : undefined;
+    xForText = $$.generateXYForText(areaIndices, barIndices, lineIndices, true);
+    yForText = $$.generateXYForText(areaIndices, barIndices, lineIndices, false);
+
+    // Update sub domain
+    $$.subY.domain($$.y.domain());
+    $$.subY2.domain($$.y2.domain());
+
+    // tooltip
+    $$.tooltip.style("display", "none");
+
+    // xgrid focus
+    $$.updateXgridFocus();
+
+    // Data empty label positioning and text.
+    main.select("text." + CLASS.text + '.' + CLASS.empty)
+        .attr("x", $$.width / 2)
+        .attr("y", $$.height / 2)
+        .text(config.data_empty_label_text)
+      .transition()
+        .style('opacity', targetsToShow.length ? 0 : 1);
+
+    // grid
+    $$.redrawGrid(duration, withY);
+
+    // rect for regions
+    $$.redrawRegion(duration);
+
+    // bars
+    $$.redrawBar(durationForExit);
+
+    // lines, areas and cricles
+    $$.redrawLine(durationForExit);
+    $$.redrawArea(durationForExit);
+    if (config.point_show) { $$.redrawCircle(); }
+
+    // text
+    if ($$.hasDataLabel()) {
+        $$.redrawText(durationForExit);
+    }
+
+    // arc
+    if ($$.redrawArc) { $$.redrawArc(duration, durationForExit, withTransform); }
+
+    // subchart
+    if ($$.redrawSubchart) {
+        $$.redrawSubchart(withSubchart, transitions, duration, durationForExit, areaIndices, barIndices, lineIndices);
+    }
+
+    // circles for select
+    main.selectAll('.' + CLASS.selectedCircles)
+        .filter($$.isBarType.bind($$))
+        .selectAll('circle')
+        .remove();
+
+    // event rect
+    if (config.interaction_enabled) {
+        $$.redrawEventRect();
+    }
+
+    // transition should be derived from one transition
+    d3.transition().duration(duration).each(function () {
+        var transitions = [];
+
+        $$.addTransitionForBar(transitions, drawBar);
+        $$.addTransitionForLine(transitions, drawLine);
+        $$.addTransitionForArea(transitions, drawArea);
+        if (config.point_show) { $$.addTransitionForCircle(transitions, cx, cy); }
+        $$.addTransitionForText(transitions, xForText, yForText, options.flow);
+        $$.addTransitionForRegion(transitions);
+        $$.addTransitionForGrid(transitions);
+
+        // Wait for end of transitions if called from flow API
+        if (options.flow) {
+            waitForDraw = $$.generateWait();
+            transitions.forEach(function (t) {
+                waitForDraw.add(t);
+            });
+            flow = $$.generateFlow({
+                targets: targetsToShow,
+                flow: options.flow,
+                duration: duration,
+                drawBar: drawBar,
+                drawLine: drawLine,
+                drawArea: drawArea,
+                cx: cx,
+                cy: cy,
+                xv: xv,
+                xForText: xForText,
+                yForText: yForText
+            });
+        }
+    })
+    .call(waitForDraw || function () {}, flow || function () {});
+
+    // update fadein condition
+    $$.mapToIds($$.data.targets).forEach(function (id) {
+        $$.withoutFadeIn[id] = true;
+    });
+
+    if ($$.updateZoom) { $$.updateZoom(); }
+};
+
+c3_chart_internal_fn.updateAndRedraw = function (options) {
+    var $$ = this, config = $$.config, transitions;
+    options = options || {};
+    // same with redraw
+    options.withTransition = getOption(options, "withTransition", true);
+    options.withTransform = getOption(options, "withTransform", false);
+    options.withLegend = getOption(options, "withLegend", false);
+    // NOT same with redraw
+    options.withUpdateXDomain = true;
+    options.withUpdateOrgXDomain = true;
+    options.withTransitionForExit = false;
+    options.withTransitionForTransform = getOption(options, "withTransitionForTransform", options.withTransition);
+    // MEMO: this needs to be called before updateLegend and it means this ALWAYS needs to be called)
+    $$.updateSizes();
+    // MEMO: called in updateLegend in redraw if withLegend
+    if (!(options.withLegend && config.legend_show)) {
+        transitions = $$.generateAxisTransitions(options.withTransitionForAxis ? config.transition_duration : 0);
+        // Update scales
+        $$.updateScales();
+        $$.updateSvgSize();
+        // Update g positions
+        $$.transformAll(options.withTransitionForTransform, transitions);
+    }
+    // Draw with new sizes & scales
+    $$.redraw(options, transitions);
+};
+
+c3_chart_internal_fn.isTimeSeries = function () {
+    return this.config.axis_x_type === 'timeseries';
+};
+c3_chart_internal_fn.isCategorized = function () {
+    return this.config.axis_x_type.indexOf('categor') >= 0;
+};
+c3_chart_internal_fn.isCustomX = function () {
+    var $$ = this, config = $$.config;
+    return !$$.isTimeSeries() && (config.data_x || notEmpty(config.data_xs));
+};
+
+c3_chart_internal_fn.getTranslate = function (target) {
+    var $$ = this, config = $$.config, x, y;
+    if (target === 'main') {
+        x = asHalfPixel($$.margin.left);
+        y = asHalfPixel($$.margin.top);
+    } else if (target === 'context') {
+        x = asHalfPixel($$.margin2.left);
+        y = asHalfPixel($$.margin2.top);
+    } else if (target === 'legend') {
+        x = $$.margin3.left;
+        y = $$.margin3.top;
+    } else if (target === 'x') {
+        x = 0;
+        y = config.axis_rotated ? 0 : $$.height;
+    } else if (target === 'y') {
+        x = 0;
+        y = config.axis_rotated ? $$.height : 0;
+    } else if (target === 'y2') {
+        x = config.axis_rotated ? 0 : $$.width;
+        y = config.axis_rotated ? 1 : 0;
+    } else if (target === 'subx') {
+        x = 0;
+        y = config.axis_rotated ? 0 : $$.height2;
+    } else if (target === 'arc') {
+        x = $$.arcWidth / 2;
+        y = $$.arcHeight / 2;
+    }
+    return "translate(" + x + "," + y + ")";
+};
+c3_chart_internal_fn.initialOpacity = function (d) {
+    return d.value !== null && this.withoutFadeIn[d.id] ? 1 : 0;
+};
+c3_chart_internal_fn.opacityForCircle = function (d) {
+    var $$ = this;
+    return isValue(d.value) ? $$.isScatterType(d) ? 0.5 : 1 : 0;
+};
+c3_chart_internal_fn.opacityForText = function () {
+    return this.hasDataLabel() ? 1 : 0;
+};
+c3_chart_internal_fn.xx = function (d) {
+    return d ? this.x(d.x) : null;
+};
+c3_chart_internal_fn.xv = function (d) {
+    var $$ = this;
+    return Math.ceil($$.x($$.isTimeSeries() ? $$.parseDate(d.value) : d.value));
+};
+c3_chart_internal_fn.yv = function (d) {
+    var $$ = this,
+        yScale = d.axis && d.axis === 'y2' ? $$.y2 : $$.y;
+    return Math.ceil(yScale(d.value));
+};
+c3_chart_internal_fn.subxx = function (d) {
+    return d ? this.subX(d.x) : null;
+};
+
+c3_chart_internal_fn.transformMain = function (withTransition, transitions) {
+    var $$ = this,
+        xAxis, yAxis, y2Axis;
+    if (transitions && transitions.axisX) {
+        xAxis = transitions.axisX;
+    } else {
+        xAxis  = $$.main.select('.' + CLASS.axisX);
+        if (withTransition) { xAxis = xAxis.transition(); }
+    }
+    if (transitions && transitions.axisY) {
+        yAxis = transitions.axisY;
+    } else {
+        yAxis = $$.main.select('.' + CLASS.axisY);
+        if (withTransition) { yAxis = yAxis.transition(); }
+    }
+    if (transitions && transitions.axisY2) {
+        y2Axis = transitions.axisY2;
+    } else {
+        y2Axis = $$.main.select('.' + CLASS.axisY2);
+        if (withTransition) { y2Axis = y2Axis.transition(); }
+    }
+    (withTransition ? $$.main.transition() : $$.main).attr("transform", $$.getTranslate('main'));
+    xAxis.attr("transform", $$.getTranslate('x'));
+    yAxis.attr("transform", $$.getTranslate('y'));
+    y2Axis.attr("transform", $$.getTranslate('y2'));
+    $$.main.select('.' + CLASS.chartArcs).attr("transform", $$.getTranslate('arc'));
+};
+c3_chart_internal_fn.transformAll = function (withTransition, transitions) {
+    var $$ = this;
+    $$.transformMain(withTransition, transitions);
+    if ($$.config.subchart_show) { $$.transformContext(withTransition, transitions); }
+    if ($$.legend) { $$.transformLegend(withTransition); }
+};
+
+c3_chart_internal_fn.updateSvgSize = function () {
+    var $$ = this;
+    $$.svg.attr('width', $$.currentWidth).attr('height', $$.currentHeight);
+    $$.svg.select('#' + $$.clipId).select('rect')
+        .attr('width', $$.width)
+        .attr('height', $$.height);
+    $$.svg.select('#' + $$.clipIdForXAxis).select('rect')
+        .attr('x', $$.getXAxisClipX.bind($$))
+        .attr('y', $$.getXAxisClipY.bind($$))
+        .attr('width', $$.getXAxisClipWidth.bind($$))
+        .attr('height', $$.getXAxisClipHeight.bind($$));
+    $$.svg.select('#' + $$.clipIdForYAxis).select('rect')
+        .attr('x', $$.getYAxisClipX.bind($$))
+        .attr('y', $$.getYAxisClipY.bind($$))
+        .attr('width', $$.getYAxisClipWidth.bind($$))
+        .attr('height', $$.getYAxisClipHeight.bind($$));
+    $$.svg.select('.' + CLASS.zoomRect)
+        .attr('width', $$.width)
+        .attr('height', $$.height);
+    // MEMO: parent div's height will be bigger than svg when <!DOCTYPE html>
+    $$.selectChart.style('max-height', $$.currentHeight + "px");
+};
+
+
+c3_chart_internal_fn.updateDimension = function () {
+    var $$ = this;
+    if ($$.config.axis_rotated) {
+        $$.axes.x.call($$.xAxis);
+        $$.axes.subx.call($$.subXAxis);
+    } else {
+        $$.axes.y.call($$.yAxis);
+        $$.axes.y2.call($$.y2Axis);
+    }
+    $$.updateSizes();
+    $$.updateScales();
+    $$.updateSvgSize();
+    $$.transformAll(false);
+};
+
+c3_chart_internal_fn.observeInserted = function (selection) {
+    var $$ = this, observer = new MutationObserver(function (mutations) {
+        mutations.forEach(function (mutation) {
+            if (mutation.type === 'childList' && mutation.previousSibling) {
+                observer.disconnect();
+                // need to wait for completion of load because size calculation requires the actual sizes determined after that completion
+                var interval = window.setInterval(function () {
+                    // parentNode will NOT be null when completed
+                    if (selection.node().parentNode) {
+                        window.clearInterval(interval);
+                        $$.updateDimension();
+                        $$.redraw({
+                            withTransform: true,
+                            withUpdateXDomain: true,
+                            withUpdateOrgXDomain: true,
+                            withTransition: false,
+                            withTransitionForTransform: false,
+                            withLegend: true
+                        });
+                        selection.transition().style('opacity', 1);
+                    }
+                }, 10);
+            }
+        });
+    });
+    observer.observe(selection.node(), {attributes: true, childList: true, characterData: true});
+};
+
+
+c3_chart_internal_fn.generateResize = function () {
+    var resizeFunctions = [];
+    function callResizeFunctions() {
+        resizeFunctions.forEach(function (f) {
+            f();
+        });
+    }
+    callResizeFunctions.add = function (f) {
+        resizeFunctions.push(f);
+    };
+    return callResizeFunctions;
+};
+
+c3_chart_internal_fn.endall = function (transition, callback) {
+    var n = 0;
+    transition
+        .each(function () { ++n; })
+        .each("end", function () {
+            if (!--n) { callback.apply(this, arguments); }
+        });
+};
+c3_chart_internal_fn.generateWait = function () {
+    var transitionsToWait = [],
+        f = function (transition, callback) {
+            var timer = setInterval(function () {
+                var done = 0;
+                transitionsToWait.forEach(function (t) {
+                    if (t.empty()) {
+                        done += 1;
+                        return;
+                    }
+                    try {
+                        t.transition();
+                    } catch (e) {
+                        done += 1;
+                    }
+                });
+                if (done === transitionsToWait.length) {
+                    clearInterval(timer);
+                    if (callback) { callback(); }
+                }
+            }, 10);
+        };
+    f.add = function (transition) {
+        transitionsToWait.push(transition);
+    };
+    return f;
+};
+
+c3_chart_internal_fn.parseDate = function (date) {
+    var $$ = this, parsedDate;
+    if (date instanceof Date) {
+        parsedDate = date;
+    } else if (typeof date === 'number') {
+        parsedDate = new Date(date);
+    } else {
+        parsedDate = $$.dataTimeFormat($$.config.data_xFormat).parse(date);
+    }
+    if (!parsedDate || isNaN(+parsedDate)) {
+        window.console.error("Failed to parse x '" + date + "' to Date object");
+    }
+    return parsedDate;
+};

src/data.convert.js

+c3_chart_internal_fn.convertUrlToData = function (url, mimeType, keys, done) {
+    var $$ = this, type = mimeType ? mimeType : 'csv';
+    $$.d3.xhr(url, function (error, data) {
+        var d;
+        if (type === 'json') {
+            d = $$.convertJsonToData(JSON.parse(data.response), keys);
+        } else {
+            d = $$.convertCsvToData(data.response);
+        }
+        done.call($$, d);
+    });
+};
+c3_chart_internal_fn.convertCsvToData = function (csv) {
+    var d3 = this.d3, rows = d3.csv.parseRows(csv), d;
+    if (rows.length === 1) {
+        d = [{}];
+        rows[0].forEach(function (id) {
+            d[0][id] = null;
+        });
+    } else {
+        d = d3.csv.parse(csv);
+    }
+    return d;
+};
+c3_chart_internal_fn.convertJsonToData = function (json, keys) {
+    var $$ = this,
+        new_rows = [], targetKeys, data;
+    if (keys) { // when keys specified, json would be an array that includes objects
+        targetKeys = keys.value;
+        if (keys.x) {
+            targetKeys.push(keys.x);
+            $$.config.data_x = keys.x;
+        }
+        new_rows.push(targetKeys);
+        json.forEach(function (o) {
+            var new_row = [];
+            targetKeys.forEach(function (key) {
+                // convert undefined to null because undefined data will be removed in convertDataToTargets()
+                var v = isUndefined(o[key]) ? null : o[key];
+                new_row.push(v);
+            });
+            new_rows.push(new_row);
+        });
+        data = $$.convertRowsToData(new_rows);
+    } else {
+        Object.keys(json).forEach(function (key) {
+            new_rows.push([key].concat(json[key]));
+        });
+        data = $$.convertColumnsToData(new_rows);
+    }
+    return data;
+};
+c3_chart_internal_fn.convertRowsToData = function (rows) {
+    var keys = rows[0], new_row = {}, new_rows = [], i, j;
+    for (i = 1; i < rows.length; i++) {
+        new_row = {};
+        for (j = 0; j < rows[i].length; j++) {
+            if (isUndefined(rows[i][j])) {
+                throw new Error("Source data is missing a component at (" + i + "," + j + ")!");
+            }
+            new_row[keys[j]] = rows[i][j];
+        }
+        new_rows.push(new_row);
+    }
+    return new_rows;
+};
+c3_chart_internal_fn.convertColumnsToData = function (columns) {
+    var new_rows = [], i, j, key;
+    for (i = 0; i < columns.length; i++) {
+        key = columns[i][0];
+        for (j = 1; j < columns[i].length; j++) {
+            if (isUndefined(new_rows[j - 1])) {
+                new_rows[j - 1] = {};
+            }
+            if (isUndefined(columns[i][j])) {
+                throw new Error("Source data is missing a component at (" + i + "," + j + ")!");
+            }
+            new_rows[j - 1][key] = columns[i][j];
+        }
+    }
+    return new_rows;
+};
+c3_chart_internal_fn.convertDataToTargets = function (data, appendXs) {
+    var $$ = this, config = $$.config,
+        ids = $$.d3.keys(data[0]).filter($$.isNotX, $$),
+        xs = $$.d3.keys(data[0]).filter($$.isX, $$),
+        targets;
+
+    // save x for update data by load when custom x and c3.x API
+    ids.forEach(function (id) {
+        var xKey = $$.getXKey(id);
+
+        if ($$.isCustomX() || $$.isTimeSeries()) {
+            // if included in input data
+            if (xs.indexOf(xKey) >= 0) {
+                $$.data.xs[id] = (appendXs && $$.data.xs[id] ? $$.data.xs[id] : []).concat(
+                    data.map(function (d) { return d[xKey]; })
+                        .filter(isValue)
+                        .map(function (rawX, i) { return $$.generateTargetX(rawX, id, i); })
+                );
+            }
+            // if not included in input data, find from preloaded data of other id's x
+            else if (config.data_x) {
+                $$.data.xs[id] = $$.getOtherTargetXs();
+            }
+            // if not included in input data, find from preloaded data
+            else if (notEmpty(config.data_xs)) {
+                $$.data.xs[id] = $$.getXValuesOfXKey(xKey, $$.data.targets);
+            }
+            // MEMO: if no x included, use same x of current will be used
+        } else {
+            $$.data.xs[id] = data.map(function (d, i) { return i; });
+        }
+    });
+
+
+    // check x is defined
+    ids.forEach(function (id) {
+        if (!$$.data.xs[id]) {
+            throw new Error('x is not defined for id = "' + id + '".');
+        }
+    });
+
+    // convert to target
+    targets = ids.map(function (id, index) {
+        var convertedId = config.data_idConverter(id);
+        return {
+            id: convertedId,
+            id_org: id,
+            values: data.map(function (d, i) {
+                var xKey = $$.getXKey(id), rawX = d[xKey], x = $$.generateTargetX(rawX, id, i);
+                // use x as categories if custom x and categorized
+                if ($$.isCustomX() && $$.isCategorized() && index === 0 && rawX) {
+                    if (i === 0) { config.axis_x_categories = []; }
+                    config.axis_x_categories.push(rawX);
+                }
+                // mark as x = undefined if value is undefined and filter to remove after mapped
+                if (isUndefined(d[id]) || $$.data.xs[id].length <= i) {
+                    x = undefined;
+                }
+                return {x: x, value: d[id] !== null && !isNaN(d[id]) ? +d[id] : null, id: convertedId};
+            }).filter(function (v) { return isDefined(v.x); })
+        };
+    });
+
+    // finish targets
+    targets.forEach(function (t) {
+        var i;
+        // sort values by its x
+        t.values = t.values.sort(function (v1, v2) {
+            var x1 = v1.x || v1.x === 0 ? v1.x : Infinity,
+                x2 = v2.x || v2.x === 0 ? v2.x : Infinity;
+            return x1 - x2;
+        });
+        // indexing each value
+        i = 0;
+        t.values.forEach(function (v) {
+            v.index = i++;
+        });
+        // this needs to be sorted because its index and value.index is identical
+        $$.data.xs[t.id].sort(function (v1, v2) {
+            return v1 - v2;
+        });
+    });
+
+    // set target types
+    if (config.data_type) {
+        $$.setTargetType($$.mapToIds(targets).filter(function (id) { return ! (id in config.data_types); }), config.data_type);
+    }
+
+    // cache as original id keyed
+    targets.forEach(function (d) {
+        $$.addCache(d.id_org, d);
+    });
+
+    return targets;
+};

src/data.js

+c3_chart_internal_fn.isX = function (key) {
+    var $$ = this, config = $$.config;
+    return (config.data_x && key === config.data_x) || (notEmpty(config.data_xs) && hasValue(config.data_xs, key));
+};
+c3_chart_internal_fn.isNotX = function (key) {
+    return !this.isX(key);
+};
+c3_chart_internal_fn.getXKey = function (id) {
+    var $$ = this, config = $$.config;
+    return config.data_x ? config.data_x : notEmpty(config.data_xs) ? config.data_xs[id] : null;
+};
+c3_chart_internal_fn.getXValuesOfXKey = function (key, targets) {
+    var $$ = this,
+        xValues, ids = targets && notEmpty(targets) ? $$.mapToIds(targets) : [];
+    ids.forEach(function (id) {
+        if ($$.getXKey(id) === key) {
+            xValues = $$.data.xs[id];
+        }
+    });
+    return xValues;
+};
+c3_chart_internal_fn.getIndexByX = function (x) {
+    var $$ = this,
+        data = $$.filterByX($$.data.targets, x);
+    return data.length ? data[0].index : null;
+};
+c3_chart_internal_fn.getXValue = function (id, i) {
+    var $$ = this;
+    return id in $$.data.xs && $$.data.xs[id] && isValue($$.data.xs[id][i]) ? $$.data.xs[id][i] : i;
+};
+c3_chart_internal_fn.getOtherTargetXs = function () {
+    var $$ = this,
+        idsForX = Object.keys($$.data.xs);
+    return idsForX.length ? $$.data.xs[idsForX[0]] : null;
+};
+c3_chart_internal_fn.getOtherTargetX = function (index) {
+    var xs = this.getOtherTargetXs();
+    return xs && index < xs.length ? xs[index] : null;
+};
+c3_chart_internal_fn.addXs = function (xs) {
+    var $$ = this;
+    Object.keys(xs).forEach(function (id) {
+        $$.config.data_xs[id] = xs[id];
+    });
+};
+c3_chart_internal_fn.hasMultipleX = function (xs) {
+    return this.d3.set(Object.keys(xs).map(function (id) { return xs[id]; })).size() > 1;
+};
+c3_chart_internal_fn.isMultipleX = function () {
+    var $$ = this, config = $$.config;
+    return notEmpty(config.data_xs) && $$.hasMultipleX(config.data_xs);
+};
+c3_chart_internal_fn.addName = function (data) {
+    var $$ = this, name;
+    if (data) {
+        name = $$.config.data_names[data.id];
+        data.name = name ? name : data.id;
+    }
+    return data;
+};
+c3_chart_internal_fn.getValueOnIndex = function (values, index) {
+    var valueOnIndex = values.filter(function (v) { return v.index === index; });
+    return valueOnIndex.length ? valueOnIndex[0] : null;
+};
+c3_chart_internal_fn.updateTargetX = function (targets, x) {
+    var $$ = this;
+    targets.forEach(function (t) {
+        t.values.forEach(function (v, i) {
+            v.x = $$.generateTargetX(x[i], t.id, i);
+        });
+        $$.data.xs[t.id] = x;
+    });
+};
+c3_chart_internal_fn.updateTargetXs = function (targets, xs) {
+    var $$ = this;
+    targets.forEach(function (t) {
+        if (xs[t.id]) {
+            $$.updateTargetX([t], xs[t.id]);
+        }
+    });
+};
+c3_chart_internal_fn.generateTargetX = function (rawX, id, index) {
+    var $$ = this, x;
+    if ($$.isTimeSeries()) {
+        x = rawX ? $$.parseDate(rawX) : $$.parseDate($$.getXValue(id, index));
+    }
+    else if ($$.isCustomX() && !$$.isCategorized()) {
+        x = isValue(rawX) ? +rawX : $$.getXValue(id, index);
+    }
+    else {
+        x = index;
+    }
+    return x;
+};
+c3_chart_internal_fn.cloneTarget = function (target) {
+    return {
+        id : target.id,
+        id_org : target.id_org,
+        values : target.values.map(function (d) {
+            return {x: d.x, value: d.value, id: d.id};
+        })
+    };
+};
+c3_chart_internal_fn.getPrevX = function (i) {
+    var $$ = this, value = $$.getValueOnIndex($$.data.targets[0].values, i - 1);
+    return value ? value.x : null;
+};
+c3_chart_internal_fn.getNextX = function (i) {
+    var $$ = this, value = $$.getValueOnIndex($$.data.targets[0].values, i + 1);
+    return value ? value.x : null;
+};
+c3_chart_internal_fn.getMaxDataCount = function () {
+    var $$ = this;
+    return $$.d3.max($$.data.targets, function (t) { return t.values.length; });
+};
+c3_chart_internal_fn.getMaxDataCountTarget = function (targets) {
+    var length = targets.length, max = 0, maxTarget;
+    if (length > 1) {
+        targets.forEach(function (t) {
+            if (t.values.length > max) {
+                maxTarget = t;
+                max = t.values.length;
+            }
+        });
+    } else {
+        maxTarget = length ? targets[0] : null;
+    }
+    return maxTarget;
+};
+c3_chart_internal_fn.getEdgeX = function (targets) {
+    var $$ = this;
+    return !targets.length ? [0, 0] : [
+        $$.d3.min(targets, function (t) { return t.values[0].x; }),
+        $$.d3.max(targets, function (t) { return t.values[t.values.length - 1].x; })
+    ];
+};
+c3_chart_internal_fn.mapToIds = function (targets) {
+    return targets.map(function (d) { return d.id; });
+};
+c3_chart_internal_fn.mapToTargetIds = function (ids) {
+    var $$ = this;
+    return ids ? (isString(ids) ? [ids] : ids) : $$.mapToIds($$.data.targets);
+};
+c3_chart_internal_fn.hasTarget = function (targets, id) {
+    var ids = this.mapToIds(targets), i;
+    for (i = 0; i < ids.length; i++) {
+        if (ids[i] === id) {
+            return true;
+        }
+    }
+    return false;
+};
+c3_chart_internal_fn.isTargetToShow = function (targetId) {
+    return this.hiddenTargetIds.indexOf(targetId) < 0;
+};
+c3_chart_internal_fn.isLegendToShow = function (targetId) {
+    return this.hiddenLegendIds.indexOf(targetId) < 0;
+};
+c3_chart_internal_fn.filterTargetsToShow = function (targets) {
+    var $$ = this;
+    return targets.filter(function (t) { return $$.isTargetToShow(t.id); });
+};
+c3_chart_internal_fn.mapTargetsToUniqueXs = function (targets) {
+    var $$ = this;
+    var xs = $$.d3.set($$.d3.merge(targets.map(function (t) { return t.values.map(function (v) { return v.x; }); }))).values();
+    return $$.isTimeSeries() ? xs.map(function (x) { return new Date(x); }) : xs.map(function (x) { return +x; });
+};
+c3_chart_internal_fn.addHiddenTargetIds = function (targetIds) {
+    this.hiddenTargetIds = this.hiddenTargetIds.concat(targetIds);
+};
+c3_chart_internal_fn.removeHiddenTargetIds = function (targetIds) {
+    this.hiddenTargetIds = this.hiddenTargetIds.filter(function (id) { return targetIds.indexOf(id) < 0; });
+};
+c3_chart_internal_fn.addHiddenLegendIds = function (targetIds) {
+    this.hiddenLegendIds = this.hiddenLegendIds.concat(targetIds);
+};
+c3_chart_internal_fn.removeHiddenLegendIds = function (targetIds) {
+    this.hiddenLegendIds = this.hiddenLegendIds.filter(function (id) { return targetIds.indexOf(id) < 0; });
+};
+c3_chart_internal_fn.getValuesAsIdKeyed = function (targets) {
+    var ys = {};
+    targets.forEach(function (t) {
+        ys[t.id] = [];
+        t.values.forEach(function (v) {
+            ys[t.id].push(v.value);
+        });
+    });
+    return ys;
+};
+c3_chart_internal_fn.checkValueInTargets = function (targets, checker) {
+    var ids = Object.keys(targets), i, j, values;
+    for (i = 0; i < ids.length; i++) {
+        values = targets[ids[i]].values;
+        for (j = 0; j < values.length; j++) {
+            if (checker(values[j].value)) {
+                return true;
+            }
+        }
+    }
+    return false;
+};
+c3_chart_internal_fn.hasNegativeValueInTargets = function (targets) {
+    return this.checkValueInTargets(targets, function (v) { return v < 0; });
+};
+c3_chart_internal_fn.hasPositiveValueInTargets = function (targets) {
+    return this.checkValueInTargets(targets, function (v) { return v > 0; });
+};
+c3_chart_internal_fn.isOrderDesc = function () {
+    var config = this.config;
+    return config.data_order && config.data_order.toLowerCase() === 'desc';
+};
+c3_chart_internal_fn.isOrderAsc = function () {
+    var config = this.config;
+    return config.data_order && config.data_order.toLowerCase() === 'asc';
+};
+c3_chart_internal_fn.orderTargets = function (targets) {
+    var $$ = this, config = $$.config, orderAsc = $$.isOrderAsc(), orderDesc = $$.isOrderDesc();
+    if (orderAsc || orderDesc) {
+        targets.sort(function (t1, t2) {
+            var reducer = function (p, c) { return p + Math.abs(c.value); };
+            var t1Sum = t1.values.reduce(reducer, 0),
+                t2Sum = t2.values.reduce(reducer, 0);
+            return orderAsc ? t2Sum - t1Sum : t1Sum - t2Sum;
+        });
+    } else if (isFunction(config.data_order)) {
+        targets.sort(config.data_order);
+    } // TODO: accept name array for order
+    return targets;
+};
+c3_chart_internal_fn.filterByX = function (targets, x) {
+    return this.d3.merge(targets.map(function (t) { return t.values; })).filter(function (v) { return v.x - x === 0; });
+};
+c3_chart_internal_fn.filterRemoveNull = function (data) {
+    return data.filter(function (d) { return isValue(d.value); });
+};
+c3_chart_internal_fn.hasDataLabel = function () {
+    var config = this.config;
+    if (typeof config.data_labels === 'boolean' && config.data_labels) {
+        return true;
+    } else if (typeof config.data_labels === 'object' && notEmpty(config.data_labels)) {
+        return true;
+    }
+    return false;
+};
+c3_chart_internal_fn.getDataLabelLength = function (min, max, axisId, key) {
+    var $$ = this,
+        lengths = [0, 0], paddingCoef = 1.3;
+    $$.selectChart.select('svg').selectAll('.dummy')
+        .data([min, max])
+        .enter().append('text')
+        .text(function (d) { return $$.formatByAxisId(axisId)(d); })
+        .each(function (d, i) {
+            lengths[i] = this.getBoundingClientRect()[key] * paddingCoef;
+        })
+        .remove();
+    return lengths;
+};
+c3_chart_internal_fn.isNoneArc = function (d) {
+    return this.hasTarget(this.data.targets, d.id);
+},
+c3_chart_internal_fn.isArc = function (d) {
+    return 'data' in d && this.hasTarget(this.data.targets, d.data.id);
+};
+c3_chart_internal_fn.findSameXOfValues = function (values, index) {
+    var i, targetX = values[index].x, sames = [];
+    for (i = index - 1; i >= 0; i--) {
+        if (targetX !== values[i].x) { break; }
+        sames.push(values[i]);
+    }
+    for (i = index; i < values.length; i++) {
+        if (targetX !== values[i].x) { break; }
+        sames.push(values[i]);
+    }
+    return sames;
+};
+
+c3_chart_internal_fn.findClosestOfValues = function (values, pos, _min, _max) { // MEMO: values must be sorted by x
+    var $$ = this,
+        min = _min ? _min : 0,
+        max = _max ? _max : values.length - 1,
+        med = Math.floor((max - min) / 2) + min,
+        value = values[med],
+        diff = $$.x(value.x) - pos[$$.config.axis_rotated ? 1 : 0],
+        candidates;
+
+    // Update range for search
+    diff > 0 ? max = med : min = med;
+
+    // if candidates are two closest min and max, stop recursive call
+    if ((max - min) === 1 || (min === 0 && max === 0)) {
+
+        // Get candidates that has same min and max index
+        candidates = [];
+        if (values[min].x || values[min].x === 0) {
+            candidates = candidates.concat($$.findSameXOfValues(values, min));
+        }
+        if (values[max].x || values[max].x === 0) {
+            candidates = candidates.concat($$.findSameXOfValues(values, max));
+        }
+
+        // Determine the closest and return
+        return $$.findClosest(candidates, pos);
+    }
+
+    return $$.findClosestOfValues(values, pos, min, max);
+};
+c3_chart_internal_fn.findClosestFromTargets = function (targets, pos) {
+    var $$ = this, candidates;
+
+    // map to array of closest points of each target
+    candidates = targets.map(function (target) {
+        return $$.findClosestOfValues(target.values, pos);
+    });
+
+    // decide closest point and return
+    return $$.findClosest(candidates, pos);
+};
+c3_chart_internal_fn.findClosest = function (values, pos) {
+    var $$ = this, minDist, closest;
+    values.forEach(function (v) {
+        var d = $$.dist(v, pos);
+        if (d < minDist || ! minDist) {
+            minDist = d;
+            closest = v;
+        }
+    });
+    return closest;
+};
+c3_chart_internal_fn.dist = function (data, pos) {
+    var $$ = this, config = $$.config,
+        yScale = $$.getAxisId(data.id) === 'y' ? $$.y : $$.y2,
+        xIndex = config.axis_rotated ? 1 : 0,
+        yIndex = config.axis_rotated ? 0 : 1;
+    return Math.pow($$.x(data.x) - pos[xIndex], 2) + Math.pow(yScale(data.value) - pos[yIndex], 2);
+};

src/data.load.js

+c3_chart_internal_fn.load = function (targets, args) {
+    var $$ = this;
+    if (targets) {
+        // filter loading targets if needed
+        if (args.filter) {
+            targets = targets.filter(args.filter);
+        }
+        // set type if args.types || args.type specified
+        if (args.type || args.types) {
+            targets.forEach(function (t) {
+                $$.setTargetType(t.id, args.types ? args.types[t.id] : args.type);
+            });
+        }
+        // Update/Add data
+        $$.data.targets.forEach(function (d) {
+            for (var i = 0; i < targets.length; i++) {
+                if (d.id === targets[i].id) {
+                    d.values = targets[i].values;
+                    targets.splice(i, 1);
+                    break;
+                }
+            }
+        });
+        $$.data.targets = $$.data.targets.concat(targets); // add remained
+    }
+
+    // Set targets
+    $$.updateTargets($$.data.targets);
+
+    // Redraw with new targets
+    $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true});
+
+    if (args.done) { args.done(); }
+};
+c3_chart_internal_fn.loadFromArgs = function (args) {
+    var $$ = this;
+    if (args.data) {
+        $$.load($$.convertDataToTargets(args.data), args);
+    }
+    else if (args.url) {
+        $$.convertUrlToData(args.url, args.mimeType, args.keys, function (data) {
+            $$.load($$.convertDataToTargets(data), args);
+        });
+    }
+    else if (args.json) {
+        $$.load($$.convertDataToTargets($$.convertJsonToData(args.json, args.keys)), args);
+    }
+    else if (args.rows) {
+        $$.load($$.convertDataToTargets($$.convertRowsToData(args.rows)), args);
+    }
+    else if (args.columns) {
+        $$.load($$.convertDataToTargets($$.convertColumnsToData(args.columns)), args);
+    }
+    else {
+        $$.load(null, args);
+    }
+};
+c3_chart_internal_fn.unload = function (targetIds, done) {
+    var $$ = this;
+    if (!done) {
+        done = function () {};
+    }
+    // filter existing target
+    targetIds = targetIds.filter(function (id) { return $$.hasTarget($$.data.targets, id); });
+    // If no target, call done and return
+    if (!targetIds || targetIds.length === 0) {
+        done();
+        return;
+    }
+    $$.svg.selectAll(targetIds.map(function (id) { return $$.selectorTarget(id); }))
+        .transition()
+        .style('opacity', 0)
+        .remove()
+        .call($$.endall, done);
+    targetIds.forEach(function (id) {
+        // Reset fadein for future load
+        $$.withoutFadeIn[id] = false;
+        // Remove target's elements
+        if ($$.legend) {
+            $$.legend.selectAll('.' + CLASS.legendItem + $$.getTargetSelectorSuffix(id)).remove();
+        }
+        // Remove target
+        $$.data.targets = $$.data.targets.filter(function (t) {
+            return t.id !== id;
+        });
+    });
+};

src/domain.js

+c3_chart_internal_fn.getYDomainMin = function (targets) {
+    var $$ = this, config = $$.config,
+        ids = $$.mapToIds(targets), ys = $$.getValuesAsIdKeyed(targets),
+        j, k, baseId, idsInGroup, id, hasNegativeValue;
+    if (config.data_groups.length > 0) {
+        hasNegativeValue = $$.hasNegativeValueInTargets(targets);
+        for (j = 0; j < config.data_groups.length; j++) {
+            // Determine baseId
+            idsInGroup = config.data_groups[j].filter(function (id) { return ids.indexOf(id) >= 0; });
+            if (idsInGroup.length === 0) { continue; }
+            baseId = idsInGroup[0];
+            // Consider negative values
+            if (hasNegativeValue && ys[baseId]) {
+                ys[baseId].forEach(function (v, i) {
+                    ys[baseId][i] = v < 0 ? v : 0;
+                });
+            }
+            // Compute min
+            for (k = 1; k < idsInGroup.length; k++) {
+                id = idsInGroup[k];
+                if (! ys[id]) { continue; }
+                ys[id].forEach(function (v, i) {
+                    if ($$.getAxisId(id) === $$.getAxisId(baseId) && ys[baseId] && !(hasNegativeValue && +v > 0)) {
+                        ys[baseId][i] += +v;
+                    }
+                });
+            }
+        }
+    }
+    return $$.d3.min(Object.keys(ys).map(function (key) { return $$.d3.min(ys[key]); }));
+};
+c3_chart_internal_fn.getYDomainMax = function (targets) {
+    var $$ = this, config = $$.config,
+        ids = $$.mapToIds(targets), ys = $$.getValuesAsIdKeyed(targets),
+        j, k, baseId, idsInGroup, id, hasPositiveValue;
+    if (config.data_groups.length > 0) {
+        hasPositiveValue = $$.hasPositiveValueInTargets(targets);
+        for (j = 0; j < config.data_groups.length; j++) {
+            // Determine baseId
+            idsInGroup = config.data_groups[j].filter(function (id) { return ids.indexOf(id) >= 0; });
+            if (idsInGroup.length === 0) { continue; }
+            baseId = idsInGroup[0];
+            // Consider positive values
+            if (hasPositiveValue && ys[baseId]) {
+                ys[baseId].forEach(function (v, i) {
+                    ys[baseId][i] = v > 0 ? v : 0;
+                });
+            }
+            // Compute max
+            for (k = 1; k < idsInGroup.length; k++) {
+                id = idsInGroup[k];
+                if (! ys[id]) { continue; }
+                ys[id].forEach(function (v, i) {
+                    if ($$.getAxisId(id) === $$.getAxisId(baseId) && ys[baseId] && !(hasPositiveValue && +v < 0)) {
+                        ys[baseId][i] += +v;
+                    }
+                });
+            }
+        }
+    }
+    return $$.d3.max(Object.keys(ys).map(function (key) { return $$.d3.max(ys[key]); }));
+};
+c3_chart_internal_fn.getYDomain = function (targets, axisId) {
+    var $$ = this, config = $$.config,
+        yTargets = targets.filter(function (d) { return $$.getAxisId(d.id) === axisId; }),
+        yMin = axisId === 'y2' ? config.axis_y2_min : config.axis_y_min,
+        yMax = axisId === 'y2' ? config.axis_y2_max : config.axis_y_max,
+        yDomainMin = isValue(yMin) ? yMin : $$.getYDomainMin(yTargets),
+        yDomainMax = isValue(yMax) ? yMax : $$.getYDomainMax(yTargets),
+        domainLength, padding, padding_top, padding_bottom,
+        center = axisId === 'y2' ? config.axis_y2_center : config.axis_y_center,
+        yDomainAbs, lengths, diff, ratio, isAllPositive, isAllNegative,
+        isZeroBased = ($$.hasType('bar', yTargets) && config.bar_zerobased) || ($$.hasType('area', yTargets) && config.area_zerobased),
+        showHorizontalDataLabel = $$.hasDataLabel() && config.axis_rotated,
+        showVerticalDataLabel = $$.hasDataLabel() && !config.axis_rotated;
+    if (yTargets.length === 0) { // use current domain if target of axisId is none
+        return axisId === 'y2' ? $$.y2.domain() : $$.y.domain();
+    }
+    if (isNaN(yDomainMin)) { // set minimum to zero when not number
+        yDomainMin = 0;
+    }
+    if (isNaN(yDomainMax)) { // set maximum to have same value as yDomainMin
+        yDomainMax = yDomainMin;
+    }
+    if (yDomainMin === yDomainMax) {
+        yDomainMin < 0 ? yDomainMax = 0 : yDomainMin = 0;
+    }
+    isAllPositive = yDomainMin >= 0 && yDomainMax >= 0;
+    isAllNegative = yDomainMin <= 0 && yDomainMax <= 0;
+
+    // Cancel zerobased if axis_*_min / axis_*_max specified
+    if ((isValue(yMin) && isAllPositive) || (isValue(yMax) && isAllNegative)) {
+        isZeroBased = false;
+    }
+
+    // Bar/Area chart should be 0-based if all positive|negative
+    if (isZeroBased) {
+        if (isAllPositive) { yDomainMin = 0; }
+        if (isAllNegative) { yDomainMax = 0; }
+    }
+
+    domainLength = Math.abs(yDomainMax - yDomainMin);
+    padding = padding_top = padding_bottom = domainLength * 0.1;
+
+    if (center) {
+        yDomainAbs = Math.max(Math.abs(yDomainMin), Math.abs(yDomainMax));
+        yDomainMax = yDomainAbs - center;
+        yDomainMin = center - yDomainAbs;
+    }
+    // add padding for data label
+    if (showHorizontalDataLabel) {
+        lengths = $$.getDataLabelLength(yDomainMin, yDomainMax, axisId, 'width');
+        diff = diffDomain($$.y.range());
+        ratio = [lengths[0] / diff, lengths[1] / diff];
+        padding_top += domainLength * (ratio[1] / (1 - ratio[0] - ratio[1]));
+        padding_bottom += domainLength * (ratio[0] / (1 - ratio[0] - ratio[1]));
+    } else if (showVerticalDataLabel) {
+        lengths = $$.getDataLabelLength(yDomainMin, yDomainMax, axisId, 'height');
+        padding_top += lengths[1];
+        padding_bottom += lengths[0];
+    }
+    if (axisId === 'y' && notEmpty(config.axis_y_padding)) {
+        padding_top = $$.getAxisPadding(config.axis_y_padding, 'top', padding, domainLength);
+        padding_bottom = $$.getAxisPadding(config.axis_y_padding, 'bottom', padding, domainLength);
+    }
+    if (axisId === 'y2' && notEmpty(config.axis_y2_padding)) {
+        padding_top = $$.getAxisPadding(config.axis_y2_padding, 'top', padding, domainLength);
+        padding_bottom = $$.getAxisPadding(config.axis_y2_padding, 'bottom', padding, domainLength);
+    }
+    // Bar/Area chart should be 0-based if all positive|negative
+    if (isZeroBased) {
+        if (isAllPositive) { padding_bottom = yDomainMin; }
+        if (isAllNegative) { padding_top = -yDomainMax; }
+    }
+    return [yDomainMin - padding_bottom, yDomainMax + padding_top];
+};
+c3_chart_internal_fn.getXDomainMin = function (targets) {
+    var $$ = this, config = $$.config;
+    return isDefined(config.axis_x_min) ?
+        ($$.isTimeSeries() ? this.parseDate(config.axis_x_min) : config.axis_x_min) :
+    $$.d3.min(targets, function (t) { return $$.d3.min(t.values, function (v) { return v.x; }); });
+};
+c3_chart_internal_fn.getXDomainMax = function (targets) {
+    var $$ = this, config = $$.config;
+    return isDefined(config.axis_x_max) ?
+        ($$.isTimeSeries() ? this.parseDate(config.axis_x_max) : config.axis_x_max) :
+    $$.d3.max(targets, function (t) { return $$.d3.max(t.values, function (v) { return v.x; }); });
+};
+c3_chart_internal_fn.getXDomainPadding = function (targets) {
+    var $$ = this, config = $$.config,
+        edgeX = this.getEdgeX(targets), diff = edgeX[1] - edgeX[0],
+        maxDataCount, padding, paddingLeft, paddingRight;
+    if ($$.isCategorized()) {
+        padding = 0;
+    } else if ($$.hasType('bar', targets)) {
+        maxDataCount = $$.getMaxDataCount();
+        padding = maxDataCount > 1 ? (diff / (maxDataCount - 1)) / 2 : 0.5;
+    } else {
+        padding = diff * 0.01;
+    }
+    if (typeof config.axis_x_padding === 'object' && notEmpty(config.axis_x_padding)) {
+        paddingLeft = isValue(config.axis_x_padding.left) ? config.axis_x_padding.left : padding;
+        paddingRight = isValue(config.axis_x_padding.right) ? config.axis_x_padding.right : padding;
+    } else if (typeof config.axis_x_padding === 'number') {
+        paddingLeft = paddingRight = config.axis_x_padding;
+    } else {
+        paddingLeft = paddingRight = padding;
+    }
+    return {left: paddingLeft, right: paddingRight};
+};
+c3_chart_internal_fn.getXDomain = function (targets) {
+    var $$ = this,
+        xDomain = [$$.getXDomainMin(targets), $$.getXDomainMax(targets)],
+        firstX = xDomain[0], lastX = xDomain[1],
+        padding = $$.getXDomainPadding(targets),
+        min = 0, max = 0;
+    // show center of x domain if min and max are the same
+    if ((firstX - lastX) === 0 && !$$.isCategorized()) {
+        firstX = $$.isTimeSeries() ? new Date(firstX.getTime() * 0.5) : -0.5;
+        lastX = $$.isTimeSeries() ? new Date(lastX.getTime() * 1.5) : 0.5;
+    }
+    if (firstX || firstX === 0) {
+        min = $$.isTimeSeries() ? new Date(firstX.getTime() - padding.left) : firstX - padding.left;
+    }
+    if (lastX || lastX === 0) {
+        max = $$.isTimeSeries() ? new Date(lastX.getTime() + padding.right) : lastX + padding.right;
+    }
+    return [min, max];
+};
+c3_chart_internal_fn.updateXDomain = function (targets, withUpdateXDomain, withUpdateOrgXDomain, domain) {
+    var $$ = this, config = $$.config;
+    if (withUpdateOrgXDomain) {
+        $$.x.domain(domain ? domain : $$.d3.extent($$.getXDomain(targets)));
+        $$.orgXDomain = $$.x.domain();
+        if (config.zoom_enabled) { $$.zoom.scale($$.x).updateScaleExtent(); }
+        $$.subX.domain($$.x.domain());
+        if ($$.brush) { $$.brush.scale($$.subX); }
+    }
+    if (withUpdateXDomain) {
+        $$.x.domain(domain ? domain : (!$$.brush || $$.brush.empty()) ? $$.orgXDomain : $$.brush.extent());
+        if (config.zoom_enabled) { $$.zoom.scale($$.x).updateScaleExtent(); }
+    }
+    return $$.x.domain();
+};

src/drag.js

+c3_chart_internal_fn.drag = function (mouse) {
+    var $$ = this, config = $$.config, main = $$.main, d3 = $$.d3;
+    var sx, sy, mx, my, minX, maxX, minY, maxY;
+
+    if ($$.hasArcType()) { return; }
+    if (! config.data_selection_enabled) { return; } // do nothing if not selectable
+    if (config.zoom_enabled && ! $$.zoom.altDomain) { return; } // skip if zoomable because of conflict drag dehavior
+    if (!config.data_selection_multiple) { return; } // skip when single selection because drag is used for multiple selection
+
+    sx = $$.dragStart[0];
+    sy = $$.dragStart[1];
+    mx = mouse[0];
+    my = mouse[1];
+    minX = Math.min(sx, mx);
+    maxX = Math.max(sx, mx);
+    minY = (config.data_selection_grouped) ? $$.margin.top : Math.min(sy, my);
+    maxY = (config.data_selection_grouped) ? $$.height : Math.max(sy, my);
+
+    main.select('.' + CLASS.dragarea)
+        .attr('x', minX)
+        .attr('y', minY)
+        .attr('width', maxX - minX)
+        .attr('height', maxY - minY);
+    // TODO: binary search when multiple xs
+    main.selectAll('.' + CLASS.shapes).selectAll('.' + CLASS.shape)
+        .filter(function (d) { return config.data_selection_isselectable(d); })
+        .each(function (d, i) {
+            var shape = d3.select(this),
+                isSelected = shape.classed(CLASS.SELECTED),
+                isIncluded = shape.classed(CLASS.INCLUDED),
+                _x, _y, _w, _h, toggle, isWithin = false, box;
+            if (shape.classed(CLASS.circle)) {
+                _x = shape.attr("cx") * 1;
+                _y = shape.attr("cy") * 1;
+                toggle = $$.togglePoint;
+                isWithin = minX < _x && _x < maxX && minY < _y && _y < maxY;
+            }
+            else if (shape.classed(CLASS.bar)) {
+                box = getPathBox(this);
+                _x = box.x;
+                _y = box.y;
+                _w = box.width;
+                _h = box.height;
+                toggle = $$.toggleBar;
+                isWithin = !(maxX < _x || _x + _w < minX) && !(maxY < _y || _y + _h < minY);
+            } else {
+                // line/area selection not supported yet
+                return;
+            }
+            if (isWithin ^ isIncluded) {
+                shape.classed(CLASS.INCLUDED, !isIncluded);
+                // TODO: included/unincluded callback here
+                shape.classed(CLASS.SELECTED, !isSelected);
+                toggle.call($$, !isSelected, shape, d, i);
+            }
+        });
+};
+
+c3_chart_internal_fn.dragstart = function (mouse) {
+    var $$ = this, config = $$.config;
+    if ($$.hasArcType()) { return; }
+    if (! config.data_selection_enabled) { return; } // do nothing if not selectable
+    $$.dragStart = mouse;
+    $$.main.select('.' + CLASS.chart).append('rect')
+        .attr('class', CLASS.dragarea)
+        .style('opacity', 0.1);
+    $$.dragging = true;
+    $$.config.data_ondragstart();
+};
+
+c3_chart_internal_fn.dragend = function () {
+    var $$ = this, config = $$.config;
+    if ($$.hasArcType()) { return; }
+    if (! config.data_selection_enabled) { return; } // do nothing if not selectable
+    $$.main.select('.' + CLASS.dragarea)
+        .transition().duration(100)
+        .style('opacity', 0)
+        .remove();
+    $$.main.selectAll('.' + CLASS.shape)
+        .classed(CLASS.INCLUDED, false);
+    $$.dragging = false;
+    $$.config.data_ondragend();
+};
+

src/format.js

+c3_chart_internal_fn.getYFormat = function (forArc) {
+    var $$ = this,
+        formatForY = forArc && !$$.hasType('gauge') ? $$.defaultArcValueFormat : $$.yFormat,
+        formatForY2 = forArc && !$$.hasType('gauge') ? $$.defaultArcValueFormat : $$.y2Format;
+    return function (v, ratio, id) {
+        var format = $$.getAxisId(id) === 'y2' ? formatForY2 : formatForY;
+        return format.call($$, v, ratio);
+    };
+};
+c3_chart_internal_fn.yFormat = function (v) {
+    var $$ = this, config = $$.config,
+        format = config.axis_y_tick_format ? config.axis_y_tick_format : $$.defaultValueFormat;
+    return format(v);
+};
+c3_chart_internal_fn.y2Format = function (v) {
+    var $$ = this, config = $$.config,
+        format = config.axis_y2_tick_format ? config.axis_y2_tick_format : $$.defaultValueFormat;
+    return format(v);
+};
+c3_chart_internal_fn.defaultValueFormat = function (v) {
+    return isValue(v) ? +v : "";
+};
+c3_chart_internal_fn.defaultArcValueFormat = function (v, ratio) {
+    return (ratio * 100).toFixed(1) + '%';
+};
+c3_chart_internal_fn.formatByAxisId = function (axisId) {
+    var $$ = this, data_labels = $$.config.data_labels,
+        format = function (v) { return isValue(v) ? +v : ""; };
+    // find format according to axis id
+    if (typeof data_labels.format === 'function') {
+        format = data_labels.format;
+    } else if (typeof data_labels.format === 'object') {
+        if (data_labels.format[axisId]) {
+            format = data_labels.format[axisId];
+        }
+    }
+    return format;
+};

src/grid.js

+c3_chart_internal_fn.initGrid = function () {
+    var $$ = this, config = $$.config, d3 = $$.d3;
+    $$.grid = $$.main.append('g')
+        .attr("clip-path", $$.clipPath)
+        .attr('class', CLASS.grid);
+    if (config.grid_x_show) {
+        $$.grid.append("g").attr("class", CLASS.xgrids);
+    }
+    if (config.grid_y_show) {
+        $$.grid.append('g').attr('class', CLASS.ygrids);
+    }
+    if (config.grid_focus_show) {
+        $$.grid.append('g')
+            .attr("class", CLASS.xgridFocus)
+            .append('line')
+            .attr('class', CLASS.xgridFocus);
+    }
+    $$.xgrid = d3.selectAll([]);
+    if (!config.grid_lines_front) { $$.initGridLines(); }
+};
+c3_chart_internal_fn.initGridLines = function () {
+    var $$ = this, d3 = $$.d3;
+    $$.gridLines = $$.main.append('g')
+        .attr("clip-path", $$.clipPath)
+        .attr('class', CLASS.grid + ' ' + CLASS.gridLines);
+    $$.gridLines.append('g').attr("class", CLASS.xgridLines);
+    $$.gridLines.append('g').attr('class', CLASS.ygridLines);
+    $$.xgridLines = d3.selectAll([]);
+};
+c3_chart_internal_fn.updateXGrid = function (withoutUpdate) {
+    var $$ = this, config = $$.config, d3 = $$.d3,
+        xgridData = $$.generateGridData(config.grid_x_type, $$.x),
+        tickOffset = $$.isCategorized() ? $$.xAxis.tickOffset() : 0;
+
+    $$.xgridAttr = config.axis_rotated ? {
+        'x1': 0,
+        'x2': $$.width,
+        'y1': function (d) { return $$.x(d) - tickOffset; },
+        'y2': function (d) { return $$.x(d) - tickOffset; }
+    } : {
+        'x1': function (d) { return $$.x(d) + tickOffset; },
+        'x2': function (d) { return $$.x(d) + tickOffset; },
+        'y1': 0,
+        'y2': $$.height
+    };
+
+    $$.xgrid = $$.main.select('.' + CLASS.xgrids).selectAll('.' + CLASS.xgrid)
+        .data(xgridData);
+    $$.xgrid.enter().append('line').attr("class", CLASS.xgrid);
+    if (!withoutUpdate) {
+        $$.xgrid.attr($$.xgridAttr)
+            .style("opacity", function () { return +d3.select(this).attr(config.axis_rotated ? 'y1' : 'x1') === (config.axis_rotated ? $$.height : 0) ? 0 : 1; });
+    }
+    $$.xgrid.exit().remove();
+};
+
+c3_chart_internal_fn.updateYGrid = function () {
+    var $$ = this, config = $$.config;
+    $$.ygrid = $$.main.select('.' + CLASS.ygrids).selectAll('.' + CLASS.ygrid)
+        .data($$.y.ticks(config.grid_y_ticks));
+    $$.ygrid.enter().append('line')
+        .attr('class', CLASS.ygrid);
+    $$.ygrid.attr("x1", config.axis_rotated ? $$.y : 0)
+        .attr("x2", config.axis_rotated ? $$.y : $$.width)
+        .attr("y1", config.axis_rotated ? 0 : $$.y)
+        .attr("y2", config.axis_rotated ? $$.height : $$.y);
+    $$.ygrid.exit().remove();
+    $$.smoothLines($$.ygrid, 'grid');
+};
+
+
+c3_chart_internal_fn.redrawGrid = function (duration, withY) {
+    var $$ = this, main = $$.main, config = $$.config,
+        xgridLine, ygridLine, yv;
+    main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
+    if (config.grid_x_show) {
+        $$.updateXGrid();
+    }
+    $$.xgridLines = main.select('.' + CLASS.xgridLines).selectAll('.' + CLASS.xgridLine)
+        .data(config.grid_x_lines);
+    // enter
+    xgridLine = $$.xgridLines.enter().append('g')
+        .attr("class", function (d) { return CLASS.xgridLine + (d.class ? ' ' + d.class : ''); });
+    xgridLine.append('line')
+        .style("opacity", 0);
+    xgridLine.append('text')
+        .attr("text-anchor", "end")
+        .attr("transform", config.axis_rotated ? "" : "rotate(-90)")
+        .attr('dx', config.axis_rotated ? 0 : -$$.margin.top)
+        .attr('dy', -5)
+        .style("opacity", 0);
+    // udpate
+    // done in d3.transition() of the end of this function
+    // exit
+    $$.xgridLines.exit().transition().duration(duration)
+        .style("opacity", 0)
+        .remove();
+
+    // Y-Grid
+    if (withY && config.grid_y_show) {
+        $$.updateYGrid();
+    }
+    if (withY) {
+        $$.ygridLines = main.select('.' + CLASS.ygridLines).selectAll('.' + CLASS.ygridLine)
+            .data(config.grid_y_lines);
+        // enter
+        ygridLine = $$.ygridLines.enter().append('g')
+            .attr("class", function (d) { return CLASS.ygridLine + (d.class ? ' ' + d.class : ''); });
+        ygridLine.append('line')
+            .style("opacity", 0);
+        ygridLine.append('text')
+            .attr("text-anchor", "end")
+            .attr("transform", config.axis_rotated ? "rotate(-90)" : "")
+            .attr('dx', config.axis_rotated ? 0 : -$$.margin.top)
+            .attr('dy', -5)
+            .style("opacity", 0);
+        // update
+        yv = $$.yv.bind($$);
+        $$.ygridLines.select('line')
+          .transition().duration(duration)
+            .attr("x1", config.axis_rotated ? yv : 0)
+            .attr("x2", config.axis_rotated ? yv : $$.width)
+            .attr("y1", config.axis_rotated ? 0 : yv)
+            .attr("y2", config.axis_rotated ? $$.height : yv)
+            .style("opacity", 1);
+        $$.ygridLines.select('text')
+          .transition().duration(duration)
+            .attr("x", config.axis_rotated ? 0 : $$.width)
+            .attr("y", yv)
+            .text(function (d) { return d.text; })
+            .style("opacity", 1);
+        // exit
+        $$.ygridLines.exit().transition().duration(duration)
+            .style("opacity", 0)
+            .remove();
+    }
+};
+c3_chart_internal_fn.addTransitionForGrid = function (transitions) {
+    var $$ = this, config = $$.config, xv = $$.xv.bind($$);
+    transitions.push($$.xgridLines.select('line').transition()
+                     .attr("x1", config.axis_rotated ? 0 : xv)
+                     .attr("x2", config.axis_rotated ? $$.width : xv)
+                     .attr("y1", config.axis_rotated ? xv : $$.margin.top)
+                     .attr("y2", config.axis_rotated ? xv : $$.height)
+                     .style("opacity", 1));
+    transitions.push($$.xgridLines.select('text').transition()
+                     .attr("x", config.axis_rotated ? $$.width : 0)
+                     .attr("y", xv)
+                     .text(function (d) { return d.text; })
+                     .style("opacity", 1));
+};
+c3_chart_internal_fn.showXGridFocus = function (selectedData) {
+    var $$ = this, config = $$.config,
+        dataToShow = selectedData.filter(function (d) { return d && isValue(d.value); }),
+        focusEl = $$.main.selectAll('line.' + CLASS.xgridFocus),
+        xx = $$.xx.bind($$);
+    if (! config.tooltip_show) { return; }
+    // Hide when scatter plot exists
+    if ($$.hasType('scatter') || $$.hasArcType()) { return; }
+    focusEl
+        .style("visibility", "visible")
+        .data([dataToShow[0]])
+        .attr(config.axis_rotated ? 'y1' : 'x1', xx)
+        .attr(config.axis_rotated ? 'y2' : 'x2', xx);
+    $$.smoothLines(focusEl, 'grid');
+};
+c3_chart_internal_fn.hideXGridFocus = function () {
+    this.main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
+};
+c3_chart_internal_fn.updateXgridFocus = function () {
+    var $$ = this, config = $$.config;
+    $$.main.select('line.' + CLASS.xgridFocus)
+        .attr("x1", config.axis_rotated ? 0 : -10)
+        .attr("x2", config.axis_rotated ? $$.width : -10)
+        .attr("y1", config.axis_rotated ? -10 : 0)
+        .attr("y2", config.axis_rotated ? -10 : $$.height);
+};
+c3_chart_internal_fn.generateGridData = function (type, scale) {
+    var $$ = this,
+        gridData = [], xDomain, firstYear, lastYear, i,
+        tickNum = $$.main.select("." + CLASS.axisX).selectAll('.tick').size();
+    if (type === 'year') {
+        xDomain = $$.getXDomain();
+        firstYear = xDomain[0].getFullYear();
+        lastYear = xDomain[1].getFullYear();
+        for (i = firstYear; i <= lastYear; i++) {
+            gridData.push(new Date(i + '-01-01 00:00:00'));
+        }
+    } else {
+        gridData = scale.ticks(10);
+        if (gridData.length > tickNum) { // use only int
+            gridData = gridData.filter(function (d) { return ("" + d).indexOf('.') < 0; });
+        }
+    }
+    return gridData;
+};
+c3_chart_internal_fn.getGridFilterToRemove = function (params) {
+    return params ? function (line) {
+        var found = false;
+        [].concat(params).forEach(function (param) {
+            if ((('value' in param && line.value === params.value) || ('class' in param && line.class === params.class))) {
+                found = true;
+            }
+        });
+        return found;
+    } : function () { return true; };
+};
+c3_chart_internal_fn.removeGridLines = function (params, forX) {
+    var $$ = this, config = $$.config,
+        toRemove = $$.getGridFilterToRemove(params),
+        toShow = function (line) { return !toRemove(line); },
+        classLines = forX ? CLASS.xgridLines : CLASS.ygridLines,
+        classLine = forX ? CLASS.xgridLine : CLASS.ygridLine;
+    $$.main.select('.' + classLines).selectAll('.' + classLine).filter(toRemove)
+        .transition().duration(config.transition_duration)
+        .style('opacity', 0).remove();
+    if (forX) {
+        config.grid_x_lines = config.grid_x_lines.filter(toShow);
+    } else {
+        config.grid_y_lines = config.grid_y_lines.filter(toShow);
+    }
+};

src/head.js

+(function (window) {
+    'use strict';
+
+    /*global define, module, exports, require */

src/interaction.js

+c3_chart_internal_fn.initEventRect = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.eventRects)
+        .style('fill-opacity', 0);
+};
+c3_chart_internal_fn.redrawEventRect = function () {
+    var $$ = this, config = $$.config,
+        eventRectUpdate, maxDataCountTarget,
+        isMultipleX = $$.isMultipleX();
+
+    // rects for mouseover
+    var eventRects = $$.main.select('.' + CLASS.eventRects)
+            .style('cursor', config.zoom_enabled ? config.axis_rotated ? 'ns-resize' : 'ew-resize' : null)
+            .classed(CLASS.eventRectsMultiple, isMultipleX)
+            .classed(CLASS.eventRectsSingle, !isMultipleX);
+
+    // clear old rects
+    eventRects.selectAll('.' + CLASS.eventRect).remove();
+
+    // open as public variable
+    $$.eventRect = eventRects.selectAll('.' + CLASS.eventRect);
+
+    if (isMultipleX) {
+        eventRectUpdate = $$.eventRect.data([0]);
+        // enter : only one rect will be added
+        $$.generateEventRectsForMultipleXs(eventRectUpdate.enter());
+        // update
+        $$.updateEventRect(eventRectUpdate);
+        // exit : not needed because always only one rect exists
+    }
+    else {
+        // Set data and update $$.eventRect
+        maxDataCountTarget = $$.getMaxDataCountTarget($$.data.targets);
+        eventRects.datum(maxDataCountTarget ? maxDataCountTarget.values : []);
+        $$.eventRect = eventRects.selectAll('.' + CLASS.eventRect);
+        eventRectUpdate = $$.eventRect.data(function (d) { return d; });
+        // enter
+        $$.generateEventRectsForSingleX(eventRectUpdate.enter());
+        // update
+        $$.updateEventRect(eventRectUpdate);
+        // exit
+        eventRectUpdate.exit().remove();
+    }
+};
+c3_chart_internal_fn.updateEventRect = function (eventRectUpdate) {
+    var $$ = this, config = $$.config,
+        x, y, w, h, rectW, rectX;
+
+    // set update selection if null
+    eventRectUpdate = eventRectUpdate || $$.eventRect.data(function (d) { return d; });
+
+    if ($$.isMultipleX()) {
+        // TODO: rotated not supported yet
+        x = 0;
+        y = 0;
+        w = $$.width;
+        h = $$.height;
+    }
+    else {
+        if (($$.isCustomX() || $$.isTimeSeries()) && !$$.isCategorized()) {
+            rectW = function (d) {
+                var prevX = $$.getPrevX(d.index), nextX = $$.getNextX(d.index), dx = $$.data.xs[d.id][d.index],
+                    w = ($$.x(nextX ? nextX : dx) - $$.x(prevX ? prevX : dx)) / 2;
+                return w < 0 ? 0 : w;
+            };
+            rectX = function (d) {
+                var prevX = $$.getPrevX(d.index), dx = $$.data.xs[d.id][d.index];
+                return ($$.x(dx) + $$.x(prevX ? prevX : dx)) / 2;
+            };
+        } else {
+            rectW = $$.getEventRectWidth();
+            rectX = function (d) {
+                return $$.x(d.x) - (rectW / 2);
+            };
+        }
+        x = config.axis_rotated ? 0 : rectX;
+        y = config.axis_rotated ? rectX : 0;
+        w = config.axis_rotated ? $$.width : rectW;
+        h = config.axis_rotated ? rectW : $$.height;
+    }
+
+    eventRectUpdate
+        .attr('class', $$.classEvent.bind($$))
+        .attr("x", x)
+        .attr("y", y)
+        .attr("width", w)
+        .attr("height", h);
+};
+c3_chart_internal_fn.generateEventRectsForSingleX = function (eventRectEnter) {
+    var $$ = this, d3 = $$.d3, config = $$.config;
+    eventRectEnter.append("rect")
+        .attr("class", $$.classEvent.bind($$))
+        .style("cursor", config.data_selection_enabled && config.data_selection_grouped ? "pointer" : null)
+        .on('mouseover', function (d) {
+            var index = d.index, selectedData, newData;
+
+            if ($$.dragging) { return; } // do nothing if dragging
+            if ($$.hasArcType()) { return; }
+
+            selectedData = $$.data.targets.map(function (t) {
+                return $$.addName($$.getValueOnIndex(t.values, index));
+            });
+
+            // Sort selectedData as names order
+            newData = [];
+            Object.keys(config.data_names).forEach(function (id) {
+                for (var j = 0; j < selectedData.length; j++) {
+                    if (selectedData[j] && selectedData[j].id === id) {
+                        newData.push(selectedData[j]);
+                        selectedData.shift(j);
+                        break;
+                    }
+                }
+            });
+            selectedData = newData.concat(selectedData); // Add remained
+
+            // Expand shapes for selection
+            if (config.point_focus_expand_enabled) { $$.expandCircles(index, null, true); }
+            $$.expandBars(index, null, true);
+
+            // Call event handler
+            $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function (d) {
+                config.data_onmouseover.call($$, d);
+            });
+        })
+        .on('mouseout', function (d) {
+            var index = d.index;
+            if ($$.hasArcType()) { return; }
+            $$.hideXGridFocus();
+            $$.hideTooltip();
+            // Undo expanded shapes
+            $$.unexpandCircles();
+            $$.unexpandBars();
+            // Call event handler
+            $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function (d) {
+                config.data_onmouseout.call($$, d);
+            });
+        })
+        .on('mousemove', function (d) {
+            var selectedData, index = d.index,
+                eventRect = $$.svg.select('.' + CLASS.eventRect + '-' + index);
+
+            if ($$.dragging) { return; } // do nothing when dragging
+            if ($$.hasArcType()) { return; }
+
+            if ($$.isStepType(d) && d3.mouse(this)[0] < $$.x($$.getXValue(d.id, index))) {
+                index -= 1;
+            }
+
+            // Show tooltip
+            selectedData = $$.filterTargetsToShow($$.data.targets).map(function (t) {
+                return $$.addName($$.getValueOnIndex(t.values, index));
+            });
+
+            if (config.tooltip_grouped) {
+                $$.showTooltip(selectedData, d3.mouse(this));
+                $$.showXGridFocus(selectedData);
+            }
+
+            if (config.tooltip_grouped && (!config.data_selection_enabled || config.data_selection_grouped)) {
+                return;
+            }
+
+            $$.main.selectAll('.' + CLASS.shape + '-' + index)
+                .each(function () {
+                    d3.select(this).classed(CLASS.EXPANDED, true);
+                    if (config.data_selection_enabled) {
+                        eventRect.style('cursor', config.data_selection_grouped ? 'pointer' : null);
+                    }
+                    if (!config.tooltip_grouped) {
+                        $$.hideXGridFocus();
+                        $$.hideTooltip();
+                        if (!config.data_selection_grouped) {
+                            $$.unexpandCircles(index);
+                            $$.unexpandBars(index);
+                        }
+                    }
+                })
+                .filter(function (d) {
+                    if (this.nodeName === 'circle') {
+                        return $$.isWithinCircle(this, $$.pointSelectR(d));
+                    }
+                    else if (this.nodeName === 'path') {
+                        return $$.isWithinBar(this);
+                    }
+                })
+                .each(function (d) {
+                    if (config.data_selection_enabled && (config.data_selection_grouped || config.data_selection_isselectable(d))) {
+                        eventRect.style('cursor', 'pointer');
+                    }
+                    if (!config.tooltip_grouped) {
+                        $$.showTooltip([d], d3.mouse(this));
+                        $$.showXGridFocus([d]);
+                        if (config.point_focus_expand_enabled) { $$.expandCircles(index, d.id, true); }
+                        $$.expandBars(index, d.id, true);
+                    }
+                });
+        })
+        .on('click', function (d) {
+            var index = d.index;
+            if ($$.hasArcType() || !$$.toggleShape) { return; }
+            if ($$.cancelClick) {
+                $$.cancelClick = false;
+                return;
+            }
+            if ($$.isStepType(d) && d3.mouse(this)[0] < $$.x($$.getXValue(d.id, index))) {
+                index -= 1;
+            }
+            $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function (d) {
+                $$.toggleShape(this, d, index);
+            });
+        })
+        .call(
+            d3.behavior.drag().origin(Object)
+                .on('drag', function () { $$.drag(d3.mouse(this)); })
+                .on('dragstart', function () { $$.dragstart(d3.mouse(this)); })
+                .on('dragend', function () { $$.dragend(); })
+        )
+        .on("dblclick.zoom", null);
+};
+
+c3_chart_internal_fn.generateEventRectsForMultipleXs = function (eventRectEnter) {
+    var $$ = this, d3 = $$.d3, config = $$.config;
+    eventRectEnter.append('rect')
+        .attr('x', 0)
+        .attr('y', 0)
+        .attr('width', $$.width)
+        .attr('height', $$.height)
+        .attr('class', CLASS.eventRect)
+        .on('mouseout', function () {
+            if ($$.hasArcType()) { return; }
+            $$.hideXGridFocus();
+            $$.hideTooltip();
+            $$.unexpandCircles();
+        })
+        .on('mousemove', function () {
+            var targetsToShow = $$.filterTargetsToShow($$.data.targets);
+            var mouse, closest, sameXData, selectedData;
+
+            if ($$.dragging) { return; } // do nothing when dragging
+            if ($$.hasArcType(targetsToShow)) { return; }
+
+            mouse = d3.mouse(this);
+            closest = $$.findClosestFromTargets(targetsToShow, mouse);
+
+            if (! closest) { return; }
+
+            if ($$.isScatterType(closest)) {
+                sameXData = [closest];
+            } else {
+                sameXData = $$.filterByX(targetsToShow, closest.x);
+            }
+
+            // show tooltip when cursor is close to some point
+            selectedData = sameXData.map(function (d) {
+                return $$.addName(d);
+            });
+            $$.showTooltip(selectedData, mouse);
+
+            // expand points
+            if (config.point_focus_expand_enabled) {
+                $$.expandCircles(closest.index, closest.id, true);
+            }
+
+            // Show xgrid focus line
+            $$.showXGridFocus(selectedData);
+
+            // Show cursor as pointer if point is close to mouse position
+            if ($$.dist(closest, mouse) < 100) {
+                $$.svg.select('.' + CLASS.eventRect).style('cursor', 'pointer');
+                if (!$$.mouseover) {
+                    config.data_onmouseover.call($$, closest);
+                    $$.mouseover = true;
+                }
+            } else if ($$.mouseover) {
+                $$.svg.select('.' + CLASS.eventRect).style('cursor', null);
+                config.data_onmouseout.call($$, closest);
+                $$.mouseover = false;
+            }
+        })
+        .on('click', function () {
+            var targetsToShow = $$.filterTargetsToShow($$.data.targets);
+            var mouse, closest;
+
+            if ($$.hasArcType(targetsToShow)) { return; }
+
+            mouse = d3.mouse(this);
+            closest = $$.findClosestFromTargets(targetsToShow, mouse);
+
+            if (! closest) { return; }
+
+            // select if selection enabled
+            if ($$.dist(closest, mouse) < 100 && $$.toggleShape) {
+                $$.main.select('.' + CLASS.circles + $$.getTargetSelectorSuffix(closest.id)).select('.' + CLASS.circle + '-' + closest.index).each(function () {
+                    $$.toggleShape(this, closest, closest.index);
+                });
+            }
+        })
+        .call(
+            d3.behavior.drag().origin(Object)
+                .on('drag', function () { $$.drag(d3.mouse(this)); })
+                .on('dragstart', function () { $$.dragstart(d3.mouse(this)); })
+                .on('dragend', function () { $$.dragend(); })
+        )
+        .on("dblclick.zoom", null);
+};
+c3_chart_internal_fn.dispatchEvent = function (type, index, mouse) {
+    var $$ = this,
+        selector = '.' + CLASS.eventRect + (!$$.isMultipleX() ? '-' + index : ''),
+        eventRect = $$.main.select(selector).node(),
+        box = eventRect.getBoundingClientRect(),
+        x = box.left + (mouse ? mouse[0] : 0),
+        y = box.top + (mouse ? mouse[1] : 0),
+        event = document.createEvent("MouseEvents");
+
+    event.initMouseEvent(type, true, true, window, 0, x, y, x, y,
+                         false, false, false, false, 0, null);
+    eventRect.dispatchEvent(event);
+};

src/legend.js

+c3_chart_internal_fn.initLegend = function () {
+    var $$ = this;
+    $$.legend = $$.svg.append("g").attr("transform", $$.getTranslate('legend'));
+    if (!$$.config.legend_show) {
+        $$.legend.style('visibility', 'hidden');
+        $$.hiddenLegendIds = $$.mapToIds($$.data.targets);
+    }
+    // MEMO: call here to update legend box and tranlate for all
+    // MEMO: translate will be upated by this, so transform not needed in updateLegend()
+    $$.updateLegend($$.mapToIds($$.data.targets), {withTransform: false, withTransitionForTransform: false, withTransition: false});
+};
+c3_chart_internal_fn.updateSizeForLegend = function (legendHeight, legendWidth) {
+    var $$ = this, config = $$.config, insetLegendPosition = {
+        top: $$.isLegendTop ? $$.getCurrentPaddingTop() + config.legend_inset_y + 5.5 : $$.currentHeight - legendHeight - $$.getCurrentPaddingBottom() - config.legend_inset_y,
+        left: $$.isLegendLeft ? $$.getCurrentPaddingLeft() + config.legend_inset_x + 0.5 : $$.currentWidth - legendWidth - $$.getCurrentPaddingRight() - config.legend_inset_x + 0.5
+    };
+    $$.margin3 = {
+        top: $$.isLegendRight ? 0 : $$.isLegendInset ? insetLegendPosition.top : $$.currentHeight - legendHeight,
+        right: NaN,
+        bottom: 0,
+        left: $$.isLegendRight ? $$.currentWidth - legendWidth : $$.isLegendInset ? insetLegendPosition.left : 0
+    };
+};
+c3_chart_internal_fn.transformLegend = function (withTransition) {
+    var $$ = this;
+    (withTransition ? $$.legend.transition() : $$.legend).attr("transform", $$.getTranslate('legend'));
+};
+c3_chart_internal_fn.updateLegendStep = function (step) {
+    this.legendStep = step;
+};
+c3_chart_internal_fn.updateLegendItemWidth = function (w) {
+    this.legendItemWidth = w;
+};
+c3_chart_internal_fn.updateLegendItemHeight = function (h) {
+    this.legendItemHeight = h;
+};
+c3_chart_internal_fn.getLegendWidth = function () {
+    var $$ = this;
+    return $$.config.legend_show ? $$.isLegendRight || $$.isLegendInset ? $$.legendItemWidth * ($$.legendStep + 1) : $$.currentWidth : 0;
+};
+c3_chart_internal_fn.getLegendHeight = function () {
+    var $$ = this, config = $$.config, h = 0;
+    if (config.legend_show) {
+        if ($$.isLegendRight) {
+            h = $$.currentHeight;
+        } else if ($$.isLegendInset) {
+            h = config.legend_inset_step ? Math.max(20, $$.legendItemHeight) * (config.legend_inset_step + 1) : $$.height;
+        } else {
+            h = Math.max(20, $$.legendItemHeight) * ($$.legendStep + 1);
+        }
+    }
+    return h;
+};
+c3_chart_internal_fn.opacityForLegend = function (legendItem) {
+    var $$ = this;
+    return legendItem.classed(CLASS.legendItemHidden) ? $$.legendOpacityForHidden : 1;
+};
+c3_chart_internal_fn.opacityForUnfocusedLegend = function (legendItem) {
+    var $$ = this;
+    return legendItem.classed(CLASS.legendItemHidden) ? $$.legendOpacityForHidden : 0.3;
+};
+c3_chart_internal_fn.toggleFocusLegend = function (id, focus) {
+    var $$ = this;
+    $$.legend.selectAll('.' + CLASS.legendItem)
+        .transition().duration(100)
+        .style('opacity', function (_id) {
+            var This = $$.d3.select(this);
+            if (id && _id !== id) {
+                return focus ? $$.opacityForUnfocusedLegend(This) : $$.opacityForLegend(This);
+            } else {
+                return focus ? $$.opacityForLegend(This) : $$.opacityForUnfocusedLegend(This);
+            }
+        });
+};
+c3_chart_internal_fn.revertLegend = function () {
+    var $$ = this, d3 = $$.d3;
+    $$.legend.selectAll('.' + CLASS.legendItem)
+        .transition().duration(100)
+        .style('opacity', function () { return $$.opacityForLegend(d3.select(this)); });
+};
+c3_chart_internal_fn.showLegend = function (targetIds) {
+    var $$ = this, config = $$.config;
+    if (!config.legend_show) {
+        config.legend_show = true;
+        $$.legend.style('visibility', 'visible');
+    }
+    $$.removeHiddenLegendIds(targetIds);
+    $$.legend.selectAll($$.selectorLegends(targetIds))
+        .style('visibility', 'visible')
+        .transition()
+        .style('opacity', function () { return $$.opacityForLegend($$.d3.select(this)); });
+};
+c3_chart_internal_fn.hideLegend = function (targetIds) {
+    var $$ = this, config = $$.config;
+    if (config.legend_show && isEmpty(targetIds)) {
+        config.legend_show = false;
+        $$.legend.style('visibility', 'hidden');
+    }
+    $$.addHiddenLegendIds(targetIds);
+    $$.legend.selectAll($$.selectorLegends(targetIds))
+        .style('opacity', 0)
+        .style('visibility', 'hidden');
+};
+c3_chart_internal_fn.updateLegend = function (targetIds, options, transitions) {
+    var $$ = this, config = $$.config;
+    var xForLegend, xForLegendText, xForLegendRect, yForLegend, yForLegendText, yForLegendRect;
+    var paddingTop = 4, paddingRight = 36, maxWidth = 0, maxHeight = 0, posMin = 10;
+    var l, totalLength = 0, offsets = {}, widths = {}, heights = {}, margins = [0], steps = {}, step = 0;
+    var withTransition, withTransitionForTransform;
+    var hasFocused = $$.legend.selectAll('.' + CLASS.legendItemFocused).size();
+    var texts, rects, tiles;
+
+    options = options || {};
+    withTransition = getOption(options, "withTransition", true);
+    withTransitionForTransform = getOption(options, "withTransitionForTransform", true);
+
+    function updatePositions(textElement, id, reset) {
+        var box = $$.getTextRect(textElement.textContent, CLASS.legendItem),
+            itemWidth = Math.ceil((box.width + paddingRight) / 10) * 10,
+            itemHeight = Math.ceil((box.height + paddingTop) / 10) * 10,
+            itemLength = $$.isLegendRight || $$.isLegendInset ? itemHeight : itemWidth,
+            areaLength = $$.isLegendRight || $$.isLegendInset ? $$.getLegendHeight() : $$.getLegendWidth(),
+            margin, maxLength;
+
+        // MEMO: care about condifion of step, totalLength
+        function updateValues(id, withoutStep) {
+            if (!withoutStep) {
+                margin = (areaLength - totalLength - itemLength) / 2;
+                if (margin < posMin) {
+                    margin = (areaLength - itemLength) / 2;
+                    totalLength = 0;
+                    step++;
+                }
+            }
+            steps[id] = step;
+            margins[step] = $$.isLegendInset ? 10 : margin;
+            offsets[id] = totalLength;
+            totalLength += itemLength;
+        }
+
+        if (reset) {
+            totalLength = 0;
+            step = 0;
+            maxWidth = 0;
+            maxHeight = 0;
+        }
+
+        if (config.legend_show && !$$.isLegendToShow(id)) {
+            widths[id] = heights[id] = steps[id] = offsets[id] = 0;
+            return;
+        }
+
+        widths[id] = itemWidth;
+        heights[id] = itemHeight;
+
+        if (!maxWidth || itemWidth >= maxWidth) { maxWidth = itemWidth; }
+        if (!maxHeight || itemHeight >= maxHeight) { maxHeight = itemHeight; }
+        maxLength = $$.isLegendRight || $$.isLegendInset ? maxHeight : maxWidth;
+
+        if (config.legend_equally) {
+            Object.keys(widths).forEach(function (id) { widths[id] = maxWidth; });
+            Object.keys(heights).forEach(function (id) { heights[id] = maxHeight; });
+            margin = (areaLength - maxLength * targetIds.length) / 2;
+            if (margin < posMin) {
+                totalLength = 0;
+                step = 0;
+                targetIds.forEach(function (id) { updateValues(id); });
+            }
+            else {
+                updateValues(id, true);
+            }
+        } else {
+            updateValues(id);
+        }
+    }
+
+    if ($$.isLegendRight) {
+        xForLegend = function (id) { return maxWidth * steps[id]; };
+        yForLegend = function (id) { return margins[steps[id]] + offsets[id]; };
+    } else if ($$.isLegendInset) {
+        xForLegend = function (id) { return maxWidth * steps[id] + 10; };
+        yForLegend = function (id) { return margins[steps[id]] + offsets[id]; };
+    } else {
+        xForLegend = function (id) { return margins[steps[id]] + offsets[id]; };
+        yForLegend = function (id) { return maxHeight * steps[id]; };
+    }
+    xForLegendText = function (id, i) { return xForLegend(id, i) + 14; };
+    yForLegendText = function (id, i) { return yForLegend(id, i) + 9; };
+    xForLegendRect = function (id, i) { return xForLegend(id, i) - 4; };
+    yForLegendRect = function (id, i) { return yForLegend(id, i) - 7; };
+
+    // Define g for legend area
+    l = $$.legend.selectAll('.' + CLASS.legendItem)
+        .data(targetIds)
+        .enter().append('g')
+        .attr('class', function (id) { return $$.generateClass(CLASS.legendItem, id); })
+        .style('visibility', function (id) { return $$.isLegendToShow(id) ? 'visible' : 'hidden'; })
+        .style('cursor', 'pointer')
+        .on('click', function (id) {
+            config.legend_item_onclick ? config.legend_item_onclick.call($$, id) : $$.api.toggle(id);
+        })
+        .on('mouseover', function (id) {
+            $$.d3.select(this).classed(CLASS.legendItemFocused, true);
+            if (!$$.transiting) {
+                $$.api.focus(id);
+            }
+            if (config.legend_item_onmouseover) {
+                config.legend_item_onmouseover.call($$, id);
+            }
+        })
+        .on('mouseout', function (id) {
+            $$.d3.select(this).classed(CLASS.legendItemFocused, false);
+            if (!$$.transiting) {
+                $$.api.revert();
+            }
+            if (config.legend_item_onmouseout) {
+                config.legend_item_onmouseout.call($$, id);
+            }
+        });
+    l.append('text')
+        .text(function (id) { return isDefined(config.data_names[id]) ? config.data_names[id] : id; })
+        .each(function (id, i) { updatePositions(this, id, i === 0); })
+        .style("pointer-events", "none")
+        .attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendText : -200)
+        .attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendText);
+    l.append('rect')
+        .attr("class", CLASS.legendItemEvent)
+        .style('fill-opacity', 0)
+        .attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendRect : -200)
+        .attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendRect);
+    l.append('rect')
+        .attr("class", CLASS.legendItemTile)
+        .style("pointer-events", "none")
+        .style('fill', $$.color)
+        .attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendText : -200)
+        .attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegend)
+        .attr('width', 10)
+        .attr('height', 10);
+    // Set background for inset legend
+    if ($$.isLegendInset && maxWidth !== 0) {
+        $$.legend.insert('g', '.' + CLASS.legendItem)
+            .attr("class", CLASS.legendBackground)
+            .append('rect')
+            .attr('height', $$.getLegendHeight() - 10)
+            .attr('width', maxWidth * (step + 1) + 10);
+    }
+
+    texts = $$.legend.selectAll('text')
+        .data(targetIds)
+        .text(function (id) { return isDefined(config.data_names[id]) ? config.data_names[id] : id; }) // MEMO: needed for update
+        .each(function (id, i) { updatePositions(this, id, i === 0); });
+    (withTransition ? texts.transition() : texts)
+        .attr('x', xForLegendText)
+        .attr('y', yForLegendText);
+
+    rects = $$.legend.selectAll('rect.' + CLASS.legendItemEvent)
+        .data(targetIds);
+    (withTransition ? rects.transition() : rects)
+        .attr('width', function (id) { return widths[id]; })
+        .attr('height', function (id) { return heights[id]; })
+        .attr('x', xForLegendRect)
+        .attr('y', yForLegendRect);
+
+    tiles = $$.legend.selectAll('rect.' + CLASS.legendItemTile)
+        .data(targetIds);
+    (withTransition ? tiles.transition() : tiles)
+        .style('fill', $$.color)
+        .attr('x', xForLegend)
+        .attr('y', yForLegend);
+
+    // toggle legend state
+    $$.legend.selectAll('.' + CLASS.legendItem)
+        .classed(CLASS.legendItemHidden, function (id) { return !$$.isTargetToShow(id); })
+        .transition()
+        .style('opacity', function (id) {
+            var This = $$.d3.select(this);
+            if ($$.isTargetToShow(id)) {
+                return !hasFocused || This.classed(CLASS.legendItemFocused) ? $$.opacityForLegend(This) : $$.opacityForUnfocusedLegend(This);
+            } else {
+                return $$.legendOpacityForHidden;
+            }
+        });
+
+    // Update all to reflect change of legend
+    $$.updateLegendItemWidth(maxWidth);
+    $$.updateLegendItemHeight(maxHeight);
+    $$.updateLegendStep(step);
+    // Update size and scale
+    $$.updateSizes();
+    $$.updateScales();
+    $$.updateSvgSize();
+    // Update g positions
+    $$.transformAll(withTransitionForTransform, transitions);
+};

src/region.js

+c3_chart_internal_fn.initRegion = function () {
+    var $$ = this;
+    $$.main.append('g')
+        .attr("clip-path", $$.clipPath)
+        .attr("class", CLASS.regions);
+};
+c3_chart_internal_fn.redrawRegion = function (duration) {
+    var $$ = this, config = $$.config;
+    $$.mainRegion = $$.main.select('.' + CLASS.regions).selectAll('.' + CLASS.region)
+        .data(config.regions);
+    $$.mainRegion.enter().append('g')
+        .attr('class', $$.classRegion.bind($$))
+      .append('rect')
+        .style("fill-opacity", 0);
+    $$.mainRegion.exit().transition().duration(duration)
+        .style("opacity", 0)
+        .remove();
+};
+c3_chart_internal_fn.addTransitionForRegion = function (transitions) {
+    var $$ = this,
+        x = $$.regionX.bind($$),
+        y = $$.regionY.bind($$),
+        w = $$.regionWidth.bind($$),
+        h = $$.regionHeight.bind($$);
+    transitions.push($$.mainRegion.selectAll('rect').transition()
+                     .attr("x", x)
+                     .attr("y", y)
+                     .attr("width", w)
+                     .attr("height", h)
+                     .style("fill-opacity", function (d) { return isValue(d.opacity) ? d.opacity : 0.1; }));
+};
+c3_chart_internal_fn.regionX = function (d) {
+    var $$ = this, config = $$.config,
+        xPos, yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        xPos = config.axis_rotated ? ('start' in d ? yScale(d.start) : 0) : 0;
+    } else {
+        xPos = config.axis_rotated ? 0 : ('start' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.start) : d.start) : 0);
+    }
+    return xPos;
+};
+c3_chart_internal_fn.regionY = function (d) {
+    var $$ = this, config = $$.config,
+        yPos, yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        yPos = config.axis_rotated ? 0 : ('end' in d ? yScale(d.end) : 0);
+    } else {
+        yPos = config.axis_rotated ? ('start' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.start) : d.start) : 0) : 0;
+    }
+    return yPos;
+};
+c3_chart_internal_fn.regionWidth = function (d) {
+    var $$ = this, config = $$.config,
+        start = $$.regionX(d), end, yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        end = config.axis_rotated ? ('end' in d ? yScale(d.end) : $$.width) : $$.width;
+    } else {
+        end = config.axis_rotated ? $$.width : ('end' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.end) : d.end) : $$.width);
+    }
+    return end < start ? 0 : end - start;
+};
+c3_chart_internal_fn.regionHeight = function (d) {
+    var $$ = this, config = $$.config,
+        start = this.regionY(d), end, yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        end = config.axis_rotated ? $$.height : ('start' in d ? yScale(d.start) : $$.height);
+    } else {
+        end = config.axis_rotated ? ('end' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.end) : d.end) : $$.height) : $$.height;
+    }
+    return end < start ? 0 : end - start;
+};
+c3_chart_internal_fn.isRegionOnX = function (d) {
+    return !d.axis || d.axis === 'x';
+};

src/scale.js

+c3_chart_internal_fn.getScale = function (min, max, forTimeseries) {
+    return (forTimeseries ? this.d3.time.scale() : this.d3.scale.linear()).range([min, max]);
+};
+c3_chart_internal_fn.getX = function (min, max, domain, offset) {
+    var $$ = this,
+        scale = $$.getScale(min, max, $$.isTimeSeries()),
+        _scale = domain ? scale.domain(domain) : scale, key;
+    // Define customized scale if categorized axis
+    if ($$.isCategorized()) {
+        offset = offset || function () { return 0; };
+        scale = function (d, raw) {
+            var v = _scale(d) + offset(d);
+            return raw ? v : Math.ceil(v);
+        };
+    } else {
+        scale = function (d, raw) {
+            var v = _scale(d);
+            return raw ? v : Math.ceil(v);
+        };
+    }
+    // define functions
+    for (key in _scale) {
+        scale[key] = _scale[key];
+    }
+    scale.orgDomain = function () {
+        return _scale.domain();
+    };
+    // define custom domain() for categorized axis
+    if ($$.isCategorized()) {
+        scale.domain = function (domain) {
+            if (!arguments.length) {
+                domain = this.orgDomain();
+                return [domain[0], domain[1] + 1];
+            }
+            _scale.domain(domain);
+            return scale;
+        };
+    }
+    return scale;
+};
+c3_chart_internal_fn.getY = function (min, max, domain) {
+    var scale = this.getScale(min, max);
+    if (domain) { scale.domain(domain); }
+    return scale;
+};
+c3_chart_internal_fn.getYScale = function (id) {
+    return this.getAxisId(id) === 'y2' ? this.y2 : this.y;
+};
+c3_chart_internal_fn.getSubYScale = function (id) {
+    return this.getAxisId(id) === 'y2' ? this.subY2 : this.subY;
+};
+c3_chart_internal_fn.updateScales = function () {
+    var $$ = this, config = $$.config,
+        forInit = !$$.x;
+    // update edges
+    $$.xMin = config.axis_rotated ? 1 : 0;
+    $$.xMax = config.axis_rotated ? $$.height : $$.width;
+    $$.yMin = config.axis_rotated ? 0 : $$.height;
+    $$.yMax = config.axis_rotated ? $$.width : 1;
+    $$.subXMin = $$.xMin;
+    $$.subXMax = $$.xMax;
+    $$.subYMin = config.axis_rotated ? 0 : $$.height2;
+    $$.subYMax = config.axis_rotated ? $$.width2 : 1;
+    // update scales
+    $$.x = $$.getX($$.xMin, $$.xMax, forInit ? undefined : $$.x.orgDomain(), function () { return $$.xAxis.tickOffset(); });
+    $$.y = $$.getY($$.yMin, $$.yMax, forInit ? config.axis_y_default : $$.y.domain());
+    $$.y2 = $$.getY($$.yMin, $$.yMax, forInit ? config.axis_y2_default : $$.y2.domain());
+    $$.subX = $$.getX($$.xMin, $$.xMax, $$.orgXDomain, function (d) { return d % 1 ? 0 : $$.subXAxis.tickOffset(); });
+    $$.subY = $$.getY($$.subYMin, $$.subYMax, forInit ? config.axis_y_default : $$.subY.domain());
+    $$.subY2 = $$.getY($$.subYMin, $$.subYMax, forInit ? config.axis_y2_default : $$.subY2.domain());
+    // update axes
+    $$.xAxisTickFormat = $$.getXAxisTickFormat();
+    $$.xAxisTickValues = config.axis_x_tick_values ? config.axis_x_tick_values : (forInit ? undefined : $$.xAxis.tickValues());
+    $$.xAxis = $$.getXAxis($$.x, $$.xOrient, $$.xAxisTickFormat, $$.xAxisTickValues);
+    $$.subXAxis = $$.getXAxis($$.subX, $$.subXOrient, $$.xAxisTickFormat, $$.xAxisTickValues);
+    $$.yAxis = $$.getYAxis($$.y, $$.yOrient, config.axis_y_tick_format, config.axis_y_ticks);
+    $$.y2Axis = $$.getYAxis($$.y2, $$.y2Orient, config.axis_y2_tick_format, config.axis_y2_ticks);
+    // Set initialized scales to brush and zoom
+    if (!forInit) {
+        if ($$.brush) { $$.brush.scale($$.subX); }
+        if (config.zoom_enabled) { $$.zoom.scale($$.x); }
+    }
+    // update for arc
+    if ($$.updateArc) { $$.updateArc(); }
+};

src/selection.js

+c3_chart_internal_fn.selectPoint = function (target, d, i) {
+    var $$ = this, config = $$.config,
+        cx = (config.axis_rotated ? $$.circleY : $$.circleX).bind($$),
+        cy = (config.axis_rotated ? $$.circleX : $$.circleY).bind($$),
+        r = $$.pointSelectR.bind($$);
+    config.data_onselected.call($$.api, d, target.node());
+    // add selected-circle on low layer g
+    $$.main.select('.' + CLASS.selectedCircles + $$.getTargetSelectorSuffix(d.id)).selectAll('.' + CLASS.selectedCircle + '-' + i)
+        .data([d])
+        .enter().append('circle')
+        .attr("class", function () { return $$.generateClass(CLASS.selectedCircle, i); })
+        .attr("cx", cx)
+        .attr("cy", cy)
+        .attr("stroke", function () { return $$.color(d); })
+        .attr("r", function (d) { return $$.pointSelectR(d) * 1.4; })
+        .transition().duration(100)
+        .attr("r", r);
+};
+c3_chart_internal_fn.unselectPoint = function (target, d, i) {
+    var $$ = this;
+    $$.config.data_onunselected(d, target.node());
+    // remove selected-circle from low layer g
+    $$.main.select('.' + CLASS.selectedCircles + $$.getTargetSelectorSuffix(d.id)).selectAll('.' + CLASS.selectedCircle + '-' + i)
+        .transition().duration(100).attr('r', 0)
+        .remove();
+};
+c3_chart_internal_fn.togglePoint = function (selected, target, d, i) {
+    selected ? this.selectPoint(target, d, i) : this.unselectPoint(target, d, i);
+};
+c3_chart_internal_fn.selectBar = function (target, d) {
+    var $$ = this;
+    $$.config.data_onselected.call($$, d, target.node());
+    target.transition().duration(100)
+        .style("fill", function () { return $$.d3.rgb($$.color(d)).brighter(0.75); });
+};
+c3_chart_internal_fn.unselectBar = function (target, d) {
+    var $$ = this;
+    $$.config.data_onunselected.call($$, d, target.node());
+    target.transition().duration(100)
+        .style("fill", function () { return $$.color(d); });
+};
+c3_chart_internal_fn.toggleBar = function (selected, target, d, i) {
+    selected ? this.selectBar(target, d, i) : this.unselectBar(target, d, i);
+};
+c3_chart_internal_fn.toggleArc = function (selected, target, d, i) {
+    this.toggleBar(selected, target, d.data, i);
+};
+c3_chart_internal_fn.getToggle = function (that) {
+    var $$ = this;
+    // path selection not supported yet
+    return that.nodeName === 'circle' ? $$.togglePoint : ($$.d3.select(that).classed(CLASS.bar) ? $$.toggleBar : $$.toggleArc);
+};
+c3_chart_internal_fn.toggleShape = function (that, d, i) {
+    var $$ = this, d3 = $$.d3, config = $$.config,
+        shape = d3.select(that), isSelected = shape.classed(CLASS.SELECTED), isWithin, toggle;
+    if (that.nodeName === 'circle') {
+        if ($$.isStepType(d)) {
+            // circle is hidden in step chart, so treat as within the click area
+            isWithin = true;
+            toggle = function () {}; // TODO: how to select step chart?
+        } else {
+            isWithin = $$.isWithinCircle(that, $$.pointSelectR(d) * 1.5);
+            toggle = $$.togglePoint;
+        }
+    }
+    else if (that.nodeName === 'path') {
+        if (shape.classed(CLASS.bar)) {
+            isWithin = $$.isWithinBar(that);
+            toggle = $$.toggleBar;
+        } else { // would be arc
+            isWithin = true;
+            toggle = $$.toggleArc;
+        }
+    }
+    if (config.data_selection_grouped || isWithin) {
+        if (config.data_selection_enabled && config.data_selection_isselectable(d)) {
+            if (!config.data_selection_multiple) {
+                $$.main.selectAll('.' + CLASS.shapes + (config.data_selection_grouped ? $$.getTargetSelectorSuffix(d.id) : "")).selectAll('.' + CLASS.shape).each(function (d, i) {
+                    var shape = d3.select(this);
+                    if (shape.classed(CLASS.SELECTED)) { toggle.call($$, false, shape.classed(CLASS.SELECTED, false), d, i); }
+                });
+            }
+            shape.classed(CLASS.SELECTED, !isSelected);
+            toggle.call($$, !isSelected, shape, d, i);
+        }
+        $$.config.data_onclick.call($$.api, d, that);
+    }
+};

src/shape.bar.js

+c3_chart_internal_fn.initBar = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.chartBars);
+};
+c3_chart_internal_fn.updateTargetsForBar = function (targets) {
+    var $$ = this, config = $$.config,
+        mainBarUpdate, mainBarEnter,
+        classChartBar = $$.classChartBar.bind($$),
+        classBars = $$.classBars.bind($$);
+    mainBarUpdate = $$.main.select('.' + CLASS.chartBars).selectAll('.' + CLASS.chartBar)
+        .data(targets)
+        .attr('class', classChartBar);
+    mainBarEnter = mainBarUpdate.enter().append('g')
+        .attr('class', classChartBar)
+        .style('opacity', 0)
+        .style("pointer-events", "none");
+    // Bars for each data
+    mainBarEnter.append('g')
+        .attr("class", classBars)
+        .style("cursor", function (d) { return config.data_selection_isselectable(d) ? "pointer" : null; });
+
+};
+c3_chart_internal_fn.redrawBar = function (durationForExit) {
+    var $$ = this,
+        barData = $$.barData.bind($$),
+        classBar = $$.classBar.bind($$),
+        initialOpacity = $$.initialOpacity.bind($$),
+        color = function (d) { return $$.color(d.id); };
+    $$.mainBar = $$.main.selectAll('.' + CLASS.bars).selectAll('.' + CLASS.bar)
+        .data(barData);
+    $$.mainBar.enter().append('path')
+        .attr("class", classBar)
+        .style("stroke", color)
+        .style("fill", color);
+    $$.mainBar
+        .style("opacity", initialOpacity);
+    $$.mainBar.exit().transition().duration(durationForExit)
+        .style('opacity', 0)
+        .remove();
+};
+c3_chart_internal_fn.addTransitionForBar = function (transitions, drawBar) {
+    var $$ = this;
+    transitions.push($$.mainBar.transition()
+                     .attr('d', drawBar)
+                     .style("fill", $$.color)
+                     .style("opacity", 1));
+};
+c3_chart_internal_fn.getBarW = function (axis, barTargetsNum) {
+    var $$ = this, config = $$.config,
+        w = typeof config.bar_width === 'number' ? config.bar_width : barTargetsNum ? (axis.tickOffset() * 2 * config.bar_width_ratio) / barTargetsNum : 0;
+    return config.bar_width_max && w > config.bar_width_max ? config.bar_width_max : w;
+};
+c3_chart_internal_fn.getBars = function (i) {
+    var $$ = this;
+    return $$.main.selectAll('.' + CLASS.bar + (isValue(i) ? '-' + i : ''));
+};
+c3_chart_internal_fn.expandBars = function (i, id, reset) {
+    var $$ = this;
+    if (reset) { $$.unexpandBars(); }
+    $$.getBars(i).classed(CLASS.EXPANDED, true);
+};
+c3_chart_internal_fn.unexpandBars = function (i) {
+    var $$ = this;
+    $$.getBars(i).classed(CLASS.EXPANDED, false);
+};
+c3_chart_internal_fn.generateDrawBar = function (barIndices, isSub) {
+    var $$ = this, config = $$.config,
+        getPoints = $$.generateGetBarPoints(barIndices, isSub);
+    return function (d, i) {
+        // 4 points that make a bar
+        var points = getPoints(d, i);
+
+        // switch points if axis is rotated, not applicable for sub chart
+        var indexX = config.axis_rotated ? 1 : 0;
+        var indexY = config.axis_rotated ? 0 : 1;
+
+        var path = 'M ' + points[0][indexX] + ',' + points[0][indexY] + ' ' +
+                'L' + points[1][indexX] + ',' + points[1][indexY] + ' ' +
+                'L' + points[2][indexX] + ',' + points[2][indexY] + ' ' +
+                'L' + points[3][indexX] + ',' + points[3][indexY] + ' ' +
+                'z';
+
+        return path;
+    };
+};
+c3_chart_internal_fn.generateGetBarPoints = function (barIndices, isSub) {
+    var $$ = this,
+        barTargetsNum = barIndices.__max__ + 1,
+        barW = $$.getBarW($$.xAxis, barTargetsNum),
+        barX = $$.getShapeX(barW, barTargetsNum, barIndices, !!isSub),
+        barY = $$.getShapeY(!!isSub),
+        barOffset = $$.getShapeOffset($$.isBarType, barIndices, !!isSub),
+        yScale = isSub ? $$.getSubYScale : $$.getYScale;
+    return function (d, i) {
+        var y0 = yScale.call($$, d.id)(0),
+            offset = barOffset(d, i) || y0, // offset is for stacked bar chart
+            posX = barX(d), posY = barY(d);
+        // fix posY not to overflow opposite quadrant
+        if ($$.config.axis_rotated) {
+            if ((0 < d.value && posY < y0) || (d.value < 0 && y0 < posY)) { posY = y0; }
+        }
+        // 4 points that make a bar
+        return [
+            [posX, offset],
+            [posX, posY - (y0 - offset)],
+            [posX + barW, posY - (y0 - offset)],
+            [posX + barW, offset]
+        ];
+    };
+};
+c3_chart_internal_fn.isWithinBar = function (_this) {
+    var d3 = this.d3,
+        mouse = d3.mouse(_this), box = _this.getBoundingClientRect(),
+        seg0 = _this.pathSegList.getItem(0), seg1 = _this.pathSegList.getItem(1),
+        x = seg0.x, y = Math.min(seg0.y, seg1.y), w = box.width, h = box.height, offset = 2,
+        sx = x - offset, ex = x + w + offset, sy = y + h + offset, ey = y - offset;
+    return sx < mouse[0] && mouse[0] < ex && ey < mouse[1] && mouse[1] < sy;
+};

src/shape.js

+c3_chart_internal_fn.getShapeIndices = function (typeFilter) {
+    var $$ = this, config = $$.config,
+        indices = {}, i = 0, j, k;
+    $$.filterTargetsToShow($$.data.targets.filter(typeFilter, $$)).forEach(function (d) {
+        for (j = 0; j < config.data_groups.length; j++) {
+            if (config.data_groups[j].indexOf(d.id) < 0) { continue; }
+            for (k = 0; k < config.data_groups[j].length; k++) {
+                if (config.data_groups[j][k] in indices) {
+                    indices[d.id] = indices[config.data_groups[j][k]];
+                    break;
+                }
+            }
+        }
+        if (isUndefined(indices[d.id])) { indices[d.id] = i++; }
+    });
+    indices.__max__ = i - 1;
+    return indices;
+};
+c3_chart_internal_fn.getShapeX = function (offset, targetsNum, indices, isSub) {
+    var $$ = this, scale = isSub ? $$.subX : $$.x;
+    return function (d) {
+        var index = d.id in indices ? indices[d.id] : 0;
+        return d.x || d.x === 0 ? scale(d.x) - offset * (targetsNum / 2 - index) : 0;
+    };
+};
+c3_chart_internal_fn.getShapeY = function (isSub) {
+    var $$ = this;
+    return function (d) {
+        var scale = isSub ? $$.getSubYScale(d.id) : $$.getYScale(d.id);
+        return scale(d.value);
+    };
+};
+c3_chart_internal_fn.getShapeOffset = function (typeFilter, indices, isSub) {
+    var $$ = this,
+        targets = $$.orderTargets($$.filterTargetsToShow($$.data.targets.filter(typeFilter, $$))),
+        targetIds = targets.map(function (t) { return t.id; });
+    return function (d, i) {
+        var scale = isSub ? $$.getSubYScale(d.id) : $$.getYScale(d.id),
+            y0 = scale(0), offset = y0;
+        targets.forEach(function (t) {
+            if (t.id === d.id || indices[t.id] !== indices[d.id]) { return; }
+            if (targetIds.indexOf(t.id) < targetIds.indexOf(d.id) && t.values[i].value * d.value >= 0) {
+                offset += scale(t.values[i].value) - y0;
+            }
+        });
+        return offset;
+    };
+};
+
+c3_chart_internal_fn.getInterpolate = function (d) {
+    var $$ = this;
+    return $$.isSplineType(d) ? "cardinal" : $$.isStepType(d) ? "step-after" : "linear";
+};

src/shape.line.js

+c3_chart_internal_fn.initLine = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.chartLines);
+};
+c3_chart_internal_fn.updateTargetsForLine = function (targets) {
+    var $$ = this, config = $$.config,
+        mainLineUpdate, mainLineEnter,
+        classChartLine = $$.classChartLine.bind($$),
+        classLines = $$.classLines.bind($$),
+        classAreas = $$.classAreas.bind($$),
+        classCircles = $$.classCircles.bind($$);
+    mainLineUpdate = $$.main.select('.' + CLASS.chartLines).selectAll('.' + CLASS.chartLine)
+        .data(targets)
+        .attr('class', classChartLine);
+    mainLineEnter = mainLineUpdate.enter().append('g')
+        .attr('class', classChartLine)
+        .style('opacity', 0)
+        .style("pointer-events", "none");
+    // Lines for each data
+    mainLineEnter.append('g')
+        .attr("class", classLines);
+    // Areas
+    mainLineEnter.append('g')
+        .attr('class', classAreas);
+    // Circles for each data point on lines
+    mainLineEnter.append('g')
+        .attr("class", function (d) { return $$.generateClass(CLASS.selectedCircles, d.id); });
+    mainLineEnter.append('g')
+        .attr("class", classCircles)
+        .style("cursor", function (d) { return config.data_selection_isselectable(d) ? "pointer" : null; });
+    // Update date for selected circles
+    targets.forEach(function (t) {
+        $$.main.selectAll('.' + CLASS.selectedCircles + $$.getTargetSelectorSuffix(t.id)).selectAll('.' + CLASS.selectedCircle).each(function (d) {
+            d.value = t.values[d.index].value;
+        });
+    });
+    // MEMO: can not keep same color...
+    //mainLineUpdate.exit().remove();
+};
+c3_chart_internal_fn.redrawLine = function (durationForExit) {
+    var $$ = this;
+    $$.mainLine = $$.main.selectAll('.' + CLASS.lines).selectAll('.' + CLASS.line)
+        .data($$.lineData.bind($$));
+    $$.mainLine.enter().append('path')
+        .attr('class', $$.classLine.bind($$))
+        .style("stroke", $$.color);
+    $$.mainLine
+        .style("opacity", $$.initialOpacity.bind($$))
+        .attr('transform', null);
+    $$.mainLine.exit().transition().duration(durationForExit)
+        .style('opacity', 0)
+        .remove();
+};
+c3_chart_internal_fn.addTransitionForLine = function (transitions, drawLine) {
+    var $$ = this;
+    transitions.push($$.mainLine.transition()
+                     .attr("d", drawLine)
+                     .style("stroke", $$.color)
+                     .style("opacity", 1));
+};
+c3_chart_internal_fn.generateDrawLine = function (lineIndices, isSub) {
+    var $$ = this, config = $$.config,
+        line = $$.d3.svg.line(),
+        getPoints = $$.generateGetLinePoints(lineIndices, isSub),
+        yScaleGetter = isSub ? $$.getSubYScale : $$.getYScale,
+        xValue = function (d) { return (isSub ? $$.subxx : $$.xx).call($$, d); },
+        yValue = function (d, i) {
+            return config.data_groups.length > 0 ? getPoints(d, i)[0][1] : yScaleGetter.call($$, d.id)(d.value);
+        };
+
+    line = config.axis_rotated ? line.x(yValue).y(xValue) : line.x(xValue).y(yValue);
+    if (!config.line_connect_null) { line = line.defined(function (d) { return d.value != null; }); }
+    return function (d) {
+        var data = config.line_connect_null ? $$.filterRemoveNull(d.values) : d.values,
+            x = isSub ? $$.x : $$.subX, y = yScaleGetter.call($$, d.id), x0 = 0, y0 = 0, path;
+        if ($$.isLineType(d)) {
+            if (config.data_regions[d.id]) {
+                path = $$.lineWithRegions(data, x, y, config.data_regions[d.id]);
+            } else {
+                path = line.interpolate($$.getInterpolate(d))(data);
+            }
+        } else {
+            if (data[0]) {
+                x0 = x(data[0].x);
+                y0 = y(data[0].value);
+            }
+            path = config.axis_rotated ? "M " + y0 + " " + x0 : "M " + x0 + " " + y0;
+        }
+        return path ? path : "M 0 0";
+    };
+};
+c3_chart_internal_fn.generateGetLinePoints = function (lineIndices, isSub) { // partial duplication of generateGetBarPoints
+    var $$ = this, config = $$.config,
+        lineTargetsNum = lineIndices.__max__ + 1,
+        x = $$.getShapeX(0, lineTargetsNum, lineIndices, !!isSub),
+        y = $$.getShapeY(!!isSub),
+        lineOffset = $$.getShapeOffset($$.isLineType, lineIndices, !!isSub),
+        yScale = isSub ? $$.getSubYScale : $$.getYScale;
+    return function (d, i) {
+        var y0 = yScale.call($$, d.id)(0),
+            offset = lineOffset(d, i) || y0, // offset is for stacked area chart
+            posX = x(d), posY = y(d);
+        // fix posY not to overflow opposite quadrant
+        if (config.axis_rotated) {
+            if ((0 < d.value && posY < y0) || (d.value < 0 && y0 < posY)) { posY = y0; }
+        }
+        // 1 point that marks the line position
+        return [
+            [posX, posY - (y0 - offset)],
+            [posX, posY - (y0 - offset)], // needed for compatibility
+            [posX, posY - (y0 - offset)], // needed for compatibility
+            [posX, posY - (y0 - offset)]  // needed for compatibility
+        ];
+    };
+};
+
+
+c3_chart_internal_fn.lineWithRegions = function (d, x, y, _regions) {
+    var $$ = this, config = $$.config,
+        prev = -1, i, j,
+        s = "M", sWithRegion,
+        xp, yp, dx, dy, dd, diff, diffx2,
+        xValue, yValue,
+        regions = [];
+
+    function isWithinRegions(x, regions) {
+        var i;
+        for (i = 0; i < regions.length; i++) {
+            if (regions[i].start < x && x <= regions[i].end) { return true; }
+        }
+        return false;
+    }
+
+    // Check start/end of regions
+    if (isDefined(_regions)) {
+        for (i = 0; i < _regions.length; i++) {
+            regions[i] = {};
+            if (isUndefined(_regions[i].start)) {
+                regions[i].start = d[0].x;
+            } else {
+                regions[i].start = $$.isTimeSeries() ? $$.parseDate(_regions[i].start) : _regions[i].start;
+            }
+            if (isUndefined(_regions[i].end)) {
+                regions[i].end = d[d.length - 1].x;
+            } else {
+                regions[i].end = $$.isTimeSeries() ? $$.parseDate(_regions[i].end) : _regions[i].end;
+            }
+        }
+    }
+
+    // Set scales
+    xValue = config.axis_rotated ? function (d) { return y(d.value); } : function (d) { return x(d.x); };
+    yValue = config.axis_rotated ? function (d) { return x(d.x); } : function (d) { return y(d.value); };
+
+    // Define svg generator function for region
+    if ($$.isTimeSeries()) {
+        sWithRegion = function (d0, d1, j, diff) {
+            var x0 = d0.x.getTime(), x_diff = d1.x - d0.x,
+                xv0 = new Date(x0 + x_diff * j),
+                xv1 = new Date(x0 + x_diff * (j + diff));
+            return "M" + x(xv0) + " " + y(yp(j)) + " " + x(xv1) + " " + y(yp(j + diff));
+        };
+    } else {
+        sWithRegion = function (d0, d1, j, diff) {
+            return "M" + x(xp(j), true) + " " + y(yp(j)) + " " + x(xp(j + diff), true) + " " + y(yp(j + diff));
+        };
+    }
+
+    // Generate
+    for (i = 0; i < d.length; i++) {
+
+        // Draw as normal
+        if (isUndefined(regions) || ! isWithinRegions(d[i].x, regions)) {
+            s += " " + xValue(d[i]) + " " + yValue(d[i]);
+        }
+        // Draw with region // TODO: Fix for horizotal charts
+        else {
+            xp = $$.getScale(d[i - 1].x, d[i].x, $$.isTimeSeries());
+            yp = $$.getScale(d[i - 1].value, d[i].value);
+
+            dx = x(d[i].x) - x(d[i - 1].x);
+            dy = y(d[i].value) - y(d[i - 1].value);
+            dd = Math.sqrt(Math.pow(dx, 2) + Math.pow(dy, 2));
+            diff = 2 / dd;
+            diffx2 = diff * 2;
+
+            for (j = diff; j <= 1; j += diffx2) {
+                s += sWithRegion(d[i - 1], d[i], j, diff);
+            }
+        }
+        prev = d[i].x;
+    }
+
+    return s;
+};
+
+
+c3_chart_internal_fn.redrawArea = function (durationForExit) {
+    var $$ = this, d3 = $$.d3;
+    $$.mainArea = $$.main.selectAll('.' + CLASS.areas).selectAll('.' + CLASS.area)
+        .data($$.lineData.bind($$));
+    $$.mainArea.enter().append('path')
+        .attr("class", $$.classArea.bind($$))
+        .style("fill", $$.color)
+        .style("opacity", function () { $$.orgAreaOpacity = +d3.select(this).style('opacity'); return 0; });
+    $$.mainArea
+        .style("opacity", $$.orgAreaOpacity);
+    $$.mainArea.exit().transition().duration(durationForExit)
+        .style('opacity', 0)
+        .remove();
+};
+c3_chart_internal_fn.addTransitionForArea = function (transitions, drawArea) {
+    var $$ = this;
+    transitions.push($$.mainArea.transition()
+                     .attr("d", drawArea)
+                     .style("fill", $$.color)
+                     .style("opacity", $$.orgAreaOpacity));
+};
+c3_chart_internal_fn.generateDrawArea = function (areaIndices, isSub) {
+    var $$ = this, config = $$.config, area = $$.d3.svg.area(),
+        getPoints = $$.generateGetAreaPoints(areaIndices, isSub),
+        yScaleGetter = isSub ? $$.getSubYScale : $$.getYScale,
+        xValue = function (d) { return (isSub ? $$.subxx : $$.xx).call($$, d); },
+        value0 = function (d, i) {
+            return config.data_groups.length > 0 ? getPoints(d, i)[0][1] : yScaleGetter.call($$, d.id)(0);
+        },
+        value1 = function (d, i) {
+            return config.data_groups.length > 0 ? getPoints(d, i)[1][1] : yScaleGetter.call($$, d.id)(d.value);
+        };
+
+    area = config.axis_rotated ? area.x0(value0).x1(value1).y(xValue) : area.x(xValue).y0(value0).y1(value1);
+    if (!config.line_connect_null) {
+        area = area.defined(function (d) { return d.value !== null; });
+    }
+
+    return function (d) {
+        var data = config.line_connect_null ? $$.filterRemoveNull(d.values) : d.values, x0 = 0, y0 = 0, path;
+        if ($$.isAreaType(d)) {
+            path = area.interpolate($$.getInterpolate(d))(data);
+        } else {
+            if (data[0]) {
+                x0 = $$.x(data[0].x);
+                y0 = $$.getYScale(d.id)(data[0].value);
+            }
+            path = config.axis_rotated ? "M " + y0 + " " + x0 : "M " + x0 + " " + y0;
+        }
+        return path ? path : "M 0 0";
+    };
+};
+
+c3_chart_internal_fn.generateGetAreaPoints = function (areaIndices, isSub) { // partial duplication of generateGetBarPoints
+    var $$ = this, config = $$.config,
+        areaTargetsNum = areaIndices.__max__ + 1,
+        x = $$.getShapeX(0, areaTargetsNum, areaIndices, !!isSub),
+        y = $$.getShapeY(!!isSub),
+        areaOffset = $$.getShapeOffset($$.isAreaType, areaIndices, !!isSub),
+        yScale = isSub ? $$.getSubYScale : $$.getYScale;
+    return function (d, i) {
+        var y0 = yScale.call($$, d.id)(0),
+            offset = areaOffset(d, i) || y0, // offset is for stacked area chart
+            posX = x(d), posY = y(d);
+        // fix posY not to overflow opposite quadrant
+        if (config.axis_rotated) {
+            if ((0 < d.value && posY < y0) || (d.value < 0 && y0 < posY)) { posY = y0; }
+        }
+        // 1 point that marks the area position
+        return [
+            [posX, offset],
+            [posX, posY - (y0 - offset)],
+            [posX, posY - (y0 - offset)], // needed for compatibility
+            [posX, offset] // needed for compatibility
+        ];
+    };
+};
+
+
+c3_chart_internal_fn.redrawCircle = function () {
+    var $$ = this;
+    $$.mainCircle = $$.main.selectAll('.' + CLASS.circles).selectAll('.' + CLASS.circle)
+        .data($$.lineOrScatterData.bind($$));
+    $$.mainCircle.enter().append("circle")
+        .attr("class", $$.classCircle.bind($$))
+        .attr("r", $$.pointR.bind($$))
+        .style("fill", $$.color);
+    $$.mainCircle
+        .style("opacity", $$.initialOpacity.bind($$));
+    $$.mainCircle.exit().remove();
+};
+c3_chart_internal_fn.addTransitionForCircle = function (transitions, cx, cy) {
+    var $$ = this;
+    transitions.push($$.mainCircle.transition()
+                     .style('opacity', $$.opacityForCircle.bind($$))
+                     .style("fill", $$.color)
+                     .attr("cx", cx)
+                     .attr("cy", cy));
+    transitions.push($$.main.selectAll('.' + CLASS.selectedCircle).transition()
+                     .attr("cx", cx)
+                     .attr("cy", cy));
+};
+c3_chart_internal_fn.circleX = function (d) {
+    return d.x || d.x === 0 ? this.x(d.x) : null;
+};
+c3_chart_internal_fn.circleY = function (d, i) {
+    var $$ = this,
+        lineIndices = $$.getShapeIndices($$.isLineType), getPoints = $$.generateGetLinePoints(lineIndices);
+    return $$.config.data_groups.length > 0 ? getPoints(d, i)[0][1] : $$.getYScale(d.id)(d.value);
+};
+c3_chart_internal_fn.getCircles = function (i, id) {
+    var $$ = this;
+    return (id ? $$.main.selectAll('.' + CLASS.circles + $$.getTargetSelectorSuffix(id)) : $$.main).selectAll('.' + CLASS.circle + (isValue(i) ? '-' + i : ''));
+};
+c3_chart_internal_fn.expandCircles = function (i, id, reset) {
+    var $$ = this,
+        r = $$.pointExpandedR.bind($$);
+    if (reset) { $$.unexpandCircles(); }
+    $$.getCircles(i, id)
+        .classed(CLASS.EXPANDED, true)
+        .attr('r', r);
+};
+c3_chart_internal_fn.unexpandCircles = function (i) {
+    var $$ = this,
+        r = $$.pointR.bind($$);
+    $$.getCircles(i)
+        .filter(function () { return $$.d3.select(this).classed(CLASS.EXPANDED); })
+        .classed(CLASS.EXPANDED, false)
+        .attr('r', r);
+};
+c3_chart_internal_fn.pointR = function (d) {
+    var $$ = this, config = $$.config;
+    return config.point_show && !$$.isStepType(d) ? (isFunction(config.point_r) ? config.point_r(d) : config.point_r) : 0;
+};
+c3_chart_internal_fn.pointExpandedR = function (d) {
+    var $$ = this, config = $$.config;
+    return config.point_focus_expand_enabled ? (config.point_focus_expand_r ? config.point_focus_expand_r : $$.pointR(d) * 1.75) : $$.pointR(d);
+};
+c3_chart_internal_fn.pointSelectR = function (d) {
+    var $$ = this, config = $$.config;
+    return config.point_select_r ? config.point_select_r : $$.pointR(d) * 4;
+};
+c3_chart_internal_fn.isWithinCircle = function (_this, _r) {
+    var d3 = this.d3,
+        mouse = d3.mouse(_this), d3_this = d3.select(_this),
+        cx = d3_this.attr("cx") * 1, cy = d3_this.attr("cy") * 1;
+    return Math.sqrt(Math.pow(cx - mouse[0], 2) + Math.pow(cy - mouse[1], 2)) < _r;
+};

src/size.js

+c3_chart_internal_fn.getCurrentWidth = function () {
+    var $$ = this, config = $$.config;
+    return config.size_width ? config.size_width : $$.getParentWidth();
+};
+c3_chart_internal_fn.getCurrentHeight = function () {
+    var $$ = this, config = $$.config,
+        h = config.size_height ? config.size_height : $$.getParentHeight();
+    return h > 0 ? h : 320 / ($$.hasType('gauge') ? 2 : 1);
+};
+c3_chart_internal_fn.getCurrentPaddingTop = function () {
+    var config = this.config;
+    return isValue(config.padding_top) ? config.padding_top : 0;
+};
+c3_chart_internal_fn.getCurrentPaddingBottom = function () {
+    var config = this.config;
+    return isValue(config.padding_bottom) ? config.padding_bottom : 0;
+};
+c3_chart_internal_fn.getCurrentPaddingLeft = function () {
+    var $$ = this, config = $$.config;
+    if (isValue(config.padding_left)) {
+        return config.padding_left;
+    } else if (config.axis_rotated) {
+        return !config.axis_x_show ? 1 : Math.max(ceil10($$.getAxisWidthByAxisId('x')), 40);
+    } else {
+        return !config.axis_y_show ? 1 : ceil10($$.getAxisWidthByAxisId('y'));
+    }
+};
+c3_chart_internal_fn.getCurrentPaddingRight = function () {
+    var $$ = this, config = $$.config,
+        defaultPadding = 10, legendWidthOnRight = $$.isLegendRight ? $$.getLegendWidth() + 20 : 0;
+    if (isValue(config.padding_right)) {
+        return config.padding_right + 1; // 1 is needed not to hide tick line
+    } else if (config.axis_rotated) {
+        return defaultPadding + legendWidthOnRight;
+    } else {
+        return (!config.axis_y2_show ? defaultPadding : ceil10($$.getAxisWidthByAxisId('y2'))) + legendWidthOnRight;
+    }
+};
+
+c3_chart_internal_fn.getParentRectValue = function (key) {
+    var parent = this.selectChart.node(), v;
+    while (parent && parent.tagName !== 'BODY') {
+        v = parent.getBoundingClientRect()[key];
+        if (v) {
+            break;
+        }
+        parent = parent.parentNode;
+    }
+    return v;
+};
+c3_chart_internal_fn.getParentWidth = function () {
+    return this.getParentRectValue('width');
+};
+c3_chart_internal_fn.getParentHeight = function () {
+    var h = this.selectChart.style('height');
+    return h.indexOf('px') > 0 ? +h.replace('px', '') : 0;
+};
+
+
+c3_chart_internal_fn.getSvgLeft = function () {
+    var $$ = this, config = $$.config,
+        leftAxisClass = config.axis_rotated ? CLASS.axisX : CLASS.axisY,
+        leftAxis = $$.main.select('.' + leftAxisClass).node(),
+        svgRect = leftAxis ? leftAxis.getBoundingClientRect() : {right: 0},
+        chartRect = $$.selectChart.node().getBoundingClientRect(),
+        hasArc = $$.hasArcType(),
+        svgLeft = svgRect.right - chartRect.left - (hasArc ? 0 : $$.getCurrentPaddingLeft());
+    return svgLeft > 0 ? svgLeft : 0;
+};
+
+
+c3_chart_internal_fn.getAxisWidthByAxisId = function (id) {
+    var $$ = this, position = $$.getAxisLabelPositionById(id);
+    return position.isInner ? 20 + $$.getMaxTickWidth(id) : 40 + $$.getMaxTickWidth(id);
+};
+c3_chart_internal_fn.getHorizontalAxisHeight = function (axisId) {
+    var $$ = this, config = $$.config;
+    if (axisId === 'x' && !config.axis_x_show) { return 0; }
+    if (axisId === 'x' && config.axis_x_height) { return config.axis_x_height; }
+    if (axisId === 'y' && !config.axis_y_show) { return config.legend_show && !$$.isLegendRight && !$$.isLegendInset ? 10 : 1; }
+    if (axisId === 'y2' && !config.axis_y2_show) { return $$.rotated_padding_top; }
+    return ($$.getAxisLabelPositionById(axisId).isInner ? 30 : 40) + (axisId === 'y2' ? -10 : 0);
+};
+
+c3_chart_internal_fn.getEventRectWidth = function () {
+    var $$ = this;
+    var target = $$.getMaxDataCountTarget($$.data.targets),
+        firstData, lastData, base, maxDataCount, ratio, w;
+    if (!target) {
+        return 0;
+    }
+    firstData = target.values[0], lastData = target.values[target.values.length - 1];
+    base = $$.x(lastData.x) - $$.x(firstData.x);
+    if (base === 0) {
+        return $$.config.axis_rotated ? $$.height : $$.width;
+    }
+    maxDataCount = $$.getMaxDataCount();
+    ratio = ($$.hasType('bar') ? (maxDataCount - ($$.isCategorized() ? 0.25 : 1)) / maxDataCount : 1);
+    w = maxDataCount > 1 ? (base * ratio) / (maxDataCount - 1) : base;
+    return w < 1 ? 1 : w;
+};

src/subchart.js

+c3_chart_internal_fn.initBrush = function () {
+    var $$ = this, d3 = $$.d3;
+    $$.brush = d3.svg.brush().on("brush", function () { $$.redrawForBrush(); });
+    $$.brush.update = function () {
+        if ($$.context) { $$.context.select('.' + CLASS.brush).call(this); }
+        return this;
+    };
+    $$.brush.scale = function (scale) {
+        return $$.config.axis_rotated ? this.y(scale) : this.x(scale);
+    };
+};
+c3_chart_internal_fn.initSubchart = function () {
+    var $$ = this, config = $$.config,
+        context = $$.context = $$.svg.append("g").attr("transform", $$.getTranslate('context'));
+
+    if (!config.subchart_show) {
+        context.style('visibility', 'hidden');
+    }
+
+    // Define g for chart area
+    context.append('g')
+        .attr("clip-path", $$.clipPath)
+        .attr('class', CLASS.chart);
+
+    // Define g for bar chart area
+    context.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.chartBars);
+
+    // Define g for line chart area
+    context.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.chartLines);
+
+    // Add extent rect for Brush
+    context.append("g")
+        .attr("clip-path", $$.clipPath)
+        .attr("class", CLASS.brush)
+        .call($$.brush)
+        .selectAll("rect")
+        .attr(config.axis_rotated ? "width" : "height", config.axis_rotated ? $$.width2 : $$.height2);
+
+    // ATTENTION: This must be called AFTER chart added
+    // Add Axis
+    $$.axes.subx = context.append("g")
+        .attr("class", CLASS.axisX)
+        .attr("transform", $$.getTranslate('subx'))
+        .attr("clip-path", config.axis_rotated ? "" : $$.clipPathForXAxis);
+};
+c3_chart_internal_fn.updateTargetsForSubchart = function (targets) {
+    var $$ = this, context = $$.context, config = $$.config,
+        contextLineEnter, contextLineUpdate, contextBarEnter, contextBarUpdate,
+        classChartBar = $$.classChartBar.bind($$),
+        classBars = $$.classBars.bind($$),
+        classChartLine = $$.classChartLine.bind($$),
+        classLines = $$.classLines.bind($$),
+        classAreas = $$.classAreas.bind($$);
+
+    if (config.subchart_show) {
+        contextBarUpdate = context.select('.' + CLASS.chartBars).selectAll('.' + CLASS.chartBar)
+            .data(targets)
+            .attr('class', classChartBar);
+        contextBarEnter = contextBarUpdate.enter().append('g')
+            .style('opacity', 0)
+            .attr('class', classChartBar);
+        // Bars for each data
+        contextBarEnter.append('g')
+            .attr("class", classBars);
+
+        //-- Line --//
+        contextLineUpdate = context.select('.' + CLASS.chartLines).selectAll('.' + CLASS.chartLine)
+            .data(targets)
+            .attr('class', classChartLine);
+        contextLineEnter = contextLineUpdate.enter().append('g')
+            .style('opacity', 0)
+            .attr('class', classChartLine);
+        // Lines for each data
+        contextLineEnter.append("g")
+            .attr("class", classLines);
+        // Area
+        contextLineEnter.append("g")
+            .attr("class", classAreas);
+    }
+};
+c3_chart_internal_fn.redrawSubchart = function (withSubchart, transitions, duration, durationForExit, areaIndices, barIndices, lineIndices) {
+    var $$ = this, d3 = $$.d3, context = $$.context, config = $$.config,
+        contextLine,  contextArea, contextBar, drawAreaOnSub, drawBarOnSub, drawLineOnSub,
+        barData = $$.barData.bind($$),
+        lineData = $$.lineData.bind($$),
+        classBar = $$.classBar.bind($$),
+        classLine = $$.classLine.bind($$),
+        classArea = $$.classArea.bind($$),
+        initialOpacity = $$.initialOpacity.bind($$);
+
+    // subchart
+    if (config.subchart_show) {
+        // reflect main chart to extent on subchart if zoomed
+        if (d3.event && d3.event.type === 'zoom') {
+            $$.brush.extent($$.x.orgDomain()).update();
+        }
+        // update subchart elements if needed
+        if (withSubchart) {
+
+            // rotate tick text if needed
+            if (!config.axis_rotated && config.axis_x_tick_rotate) {
+                $$.rotateTickText($$.axes.subx, transitions.axisSubX, config.axis_x_tick_rotate);
+            }
+
+            // extent rect
+            if (!$$.brush.empty()) {
+                $$.brush.extent($$.x.orgDomain()).update();
+            }
+            // setup drawer - MEMO: this must be called after axis updated
+            drawAreaOnSub = $$.generateDrawArea(areaIndices, true);
+            drawBarOnSub = $$.generateDrawBar(barIndices, true);
+            drawLineOnSub = $$.generateDrawLine(lineIndices, true);
+            // bars
+            contextBar = context.selectAll('.' + CLASS.bars).selectAll('.' + CLASS.bar)
+                .data(barData);
+            contextBar.enter().append('path')
+                .attr("class", classBar)
+                .style("stroke", 'none')
+                .style("fill", $$.color);
+            contextBar
+                .style("opacity", initialOpacity)
+                .transition().duration(duration)
+                .attr('d', drawBarOnSub)
+                .style('opacity', 1);
+            contextBar.exit().transition().duration(duration)
+                .style('opacity', 0)
+                .remove();
+            // lines
+            contextLine = context.selectAll('.' + CLASS.lines).selectAll('.' + CLASS.line)
+                .data(lineData);
+            contextLine.enter().append('path')
+                .attr('class', classLine)
+                .style('stroke', $$.color);
+            contextLine
+                .style("opacity", initialOpacity)
+                .transition().duration(duration)
+                .attr("d", drawLineOnSub)
+                .style('opacity', 1);
+            contextLine.exit().transition().duration(duration)
+                .style('opacity', 0)
+                .remove();
+            // area
+            contextArea = context.selectAll('.' + CLASS.areas).selectAll('.' + CLASS.area)
+                .data(lineData);
+            contextArea.enter().append('path')
+                .attr("class", classArea)
+                .style("fill", $$.color)
+                .style("opacity", function () { $$.orgAreaOpacity = +d3.select(this).style('opacity'); return 0; });
+            contextArea
+                .style("opacity", 0)
+                .transition().duration(duration)
+                .attr("d", drawAreaOnSub)
+                .style("fill", $$.color)
+                .style("opacity", $$.orgAreaOpacity);
+            contextArea.exit().transition().duration(durationForExit)
+                .style('opacity', 0)
+                .remove();
+        }
+    }
+};
+c3_chart_internal_fn.redrawForBrush = function () {
+    var $$ = this, x = $$.x;
+    $$.redraw({
+        withTransition: false,
+        withY: false,
+        withSubchart: false,
+        withUpdateXDomain: true
+    });
+    $$.config.subchart_onbrush.call($$.api, x.orgDomain());
+};
+c3_chart_internal_fn.transformContext = function (withTransition, transitions) {
+    var $$ = this, subXAxis;
+    if (transitions && transitions.axisSubX) {
+        subXAxis = transitions.axisSubX;
+    } else {
+        subXAxis = $$.context.select('.' + CLASS.axisX);
+        if (withTransition) { subXAxis = subXAxis.transition(); }
+    }
+    $$.context.attr("transform", $$.getTranslate('context'));
+    subXAxis.attr("transform", $$.getTranslate('subx'));
+};

src/tail.js

+    if (typeof define === 'function' && define.amd) {
+        define("c3", ["d3"], c3);
+    } else if ('undefined' !== typeof exports && 'undefined' !== typeof module) {
+        module.exports = c3;
+    } else {
+        window.c3 = c3;
+    }
+
+})(window);

src/text.js

+c3_chart_internal_fn.initText = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g")
+        .attr("class", CLASS.chartTexts);
+    $$.mainText = $$.d3.selectAll([]);
+};
+c3_chart_internal_fn.updateTargetsForText = function (targets) {
+    var $$ = this, mainTextUpdate, mainTextEnter,
+        classChartText = $$.classChartText.bind($$),
+        classTexts = $$.classTexts.bind($$);
+    mainTextUpdate = $$.main.select('.' + CLASS.chartTexts).selectAll('.' + CLASS.chartText)
+        .data(targets)
+        .attr('class', classChartText);
+    mainTextEnter = mainTextUpdate.enter().append('g')
+        .attr('class', classChartText)
+        .style('opacity', 0)
+        .style("pointer-events", "none");
+    mainTextEnter.append('g')
+        .attr('class', classTexts);
+};
+c3_chart_internal_fn.redrawText = function (durationForExit) {
+    var $$ = this, config = $$.config,
+        barOrLineData = $$.barOrLineData.bind($$),
+        classText = $$.classText.bind($$);
+    $$.mainText = $$.main.selectAll('.' + CLASS.texts).selectAll('.' + CLASS.text)
+        .data(barOrLineData);
+    $$.mainText.enter().append('text')
+        .attr("class", classText)
+        .attr('text-anchor', function (d) { return config.axis_rotated ? (d.value < 0 ? 'end' : 'start') : 'middle'; })
+        .style("stroke", 'none')
+        .style("fill", function (d) { return $$.color(d); })
+        .style("fill-opacity", 0);
+    $$.mainText
+        .text(function (d) { return $$.formatByAxisId($$.getAxisId(d.id))(d.value, d.id); });
+    $$.mainText.exit()
+        .transition().duration(durationForExit)
+        .style('fill-opacity', 0)
+        .remove();
+};
+c3_chart_internal_fn.addTransitionForText = function (transitions, xForText, yForText, forFlow) {
+    var $$ = this,
+        opacityForText = forFlow ? 0 : $$.opacityForText.bind($$);
+    transitions.push($$.mainText.transition()
+                     .attr('x', xForText)
+                     .attr('y', yForText)
+                     .style("fill", $$.color)
+                     .style("fill-opacity", opacityForText));
+};
+c3_chart_internal_fn.getTextRect = function (text, cls) {
+    var rect;
+    this.d3.select('body').selectAll('.dummy')
+        .data([text])
+      .enter().append('text')
+        .classed(cls ? cls : "", true)
+        .text(text)
+      .each(function () { rect = this.getBoundingClientRect(); })
+        .remove();
+    return rect;
+};
+c3_chart_internal_fn.generateXYForText = function (areaIndices, barIndices, lineIndices, forX) {
+    var $$ = this,
+        getAreaPoints = $$.generateGetAreaPoints(barIndices, false),
+        getBarPoints = $$.generateGetBarPoints(barIndices, false),
+        getLinePoints = $$.generateGetLinePoints(lineIndices, false),
+        getter = forX ? $$.getXForText : $$.getYForText;
+    return function (d, i) {
+        var getPoints = $$.isAreaType(d) ? getAreaPoints : $$.isBarType(d) ? getBarPoints : getLinePoints;
+        return getter.call($$, getPoints(d, i), d, this);
+    };
+};
+c3_chart_internal_fn.getXForText = function (points, d, textElement) {
+    var $$ = this,
+        box = textElement.getBoundingClientRect(), xPos, padding;
+    if ($$.config.axis_rotated) {
+        padding = $$.isBarType(d) ? 4 : 6;
+        xPos = points[2][1] + padding * (d.value < 0 ? -1 : 1);
+    } else {
+        xPos = $$.hasType('bar') ? (points[2][0] + points[0][0]) / 2 : points[0][0];
+    }
+    return d.value !== null ? xPos : xPos > $$.width ? $$.width - box.width : xPos;
+};
+c3_chart_internal_fn.getYForText = function (points, d, textElement) {
+    var $$ = this,
+        box = textElement.getBoundingClientRect(), yPos;
+    if ($$.config.axis_rotated) {
+        yPos = (points[0][0] + points[2][0] + box.height * 0.6) / 2;
+    } else {
+        yPos = points[2][1] + (d.value < 0 ? box.height : $$.isBarType(d) ? -3 : -6);
+    }
+    return d.value !== null ? yPos : yPos < box.height ? box.height : yPos;
+};

src/tooltip.js

+c3_chart_internal_fn.initTooltip = function () {
+    var $$ = this, config = $$.config, i;
+    $$.tooltip = $$.selectChart
+        .style("position", "relative")
+        .append("div")
+        .style("position", "absolute")
+        .style("pointer-events", "none")
+        .style("z-index", "10")
+        .style("display", "none");
+    // Show tooltip if needed
+    if (config.tooltip_init_show) {
+        if ($$.isTimeSeries() && isString(config.tooltip_init_x)) {
+            config.tooltip_init_x = $$.parseDate(config.tooltip_init_x);
+            for (i = 0; i < $$.data.targets[0].values.length; i++) {
+                if (($$.data.targets[0].values[i].x - config.tooltip_init_x) === 0) { break; }
+            }
+            config.tooltip_init_x = i;
+        }
+        $$.tooltip.html(config.tooltip_contents.call($$, $$.data.targets.map(function (d) {
+            return $$.addName(d.values[config.tooltip_init_x]);
+        }), $$.getXAxisTickFormat(), $$.getYFormat($$.hasArcType()), $$.color));
+        $$.tooltip.style("top", config.tooltip_init_position.top)
+            .style("left", config.tooltip_init_position.left)
+            .style("display", "block");
+    }
+};
+c3_chart_internal_fn.getTooltipContent = function (d, defaultTitleFormat, defaultValueFormat, color) {
+    var $$ = this, config = $$.config,
+        titleFormat = config.tooltip_format_title || defaultTitleFormat,
+        nameFormat = config.tooltip_format_name || function (name) { return name; },
+        valueFormat = config.tooltip_format_value || defaultValueFormat,
+        text, i, title, value, name, bgcolor;
+    for (i = 0; i < d.length; i++) {
+        if (! (d[i] && (d[i].value || d[i].value === 0))) { continue; }
+
+        if (! text) {
+            title = titleFormat ? titleFormat(d[i].x) : d[i].x;
+            text = "<table class='" + CLASS.tooltip + "'>" + (title || title === 0 ? "<tr><th colspan='2'>" + title + "</th></tr>" : "");
+        }
+
+        name = nameFormat(d[i].name);
+        value = valueFormat(d[i].value, d[i].ratio, d[i].id, d[i].index);
+        bgcolor = $$.levelColor ? $$.levelColor(d[i].value) : color(d[i].id);
+
+        text += "<tr class='" + CLASS.tooltipName + "-" + d[i].id + "'>";
+        text += "<td class='name'><span style='background-color:" + bgcolor + "'></span>" + name + "</td>";
+        text += "<td class='value'>" + value + "</td>";
+        text += "</tr>";
+    }
+    return text + "</table>";
+};
+c3_chart_internal_fn.showTooltip = function (selectedData, mouse) {
+    var $$ = this, config = $$.config;
+    var tWidth, tHeight, svgLeft, tooltipLeft, tooltipRight, tooltipTop, chartRight;
+    var forArc = $$.hasArcType(),
+        dataToShow = selectedData.filter(function (d) { return d && isValue(d.value); });
+    if (dataToShow.length === 0 || !config.tooltip_show) {
+        return;
+    }
+    $$.tooltip.html(config.tooltip_contents.call($$, selectedData, $$.getXAxisTickFormat(), $$.getYFormat(forArc), $$.color)).style("display", "block");
+
+    // Get tooltip dimensions
+    tWidth = $$.tooltip.property('offsetWidth');
+    tHeight = $$.tooltip.property('offsetHeight');
+    // Determin tooltip position
+    if (forArc) {
+        tooltipLeft = ($$.width / 2) + mouse[0];
+        tooltipTop = ($$.height / 2) + mouse[1] + 20;
+    } else {
+        if (config.axis_rotated) {
+            svgLeft = $$.getSvgLeft();
+            tooltipLeft = svgLeft + mouse[0] + 100;
+            tooltipRight = tooltipLeft + tWidth;
+            chartRight = $$.getCurrentWidth() - $$.getCurrentPaddingRight();
+            tooltipTop = $$.x(dataToShow[0].x) + 20;
+        } else {
+            svgLeft = $$.getSvgLeft();
+            tooltipLeft = svgLeft + $$.getCurrentPaddingLeft() + $$.x(dataToShow[0].x) + 20;
+            tooltipRight = tooltipLeft + tWidth;
+            chartRight = svgLeft + $$.getCurrentWidth() - $$.getCurrentPaddingRight();
+            tooltipTop = mouse[1] + 15;
+        }
+
+        if (tooltipRight > chartRight) {
+            tooltipLeft -= tooltipRight - chartRight;
+        }
+        if (tooltipTop + tHeight > $$.getCurrentHeight() && tooltipTop > tHeight + 30) {
+            tooltipTop -= tHeight + 30;
+        }
+    }
+    // Set tooltip
+    $$.tooltip
+        .style("top", tooltipTop + "px")
+        .style("left", tooltipLeft + 'px');
+};
+c3_chart_internal_fn.hideTooltip = function () {
+    this.tooltip.style("display", "none");
+};

src/type.js

+c3_chart_internal_fn.setTargetType = function (targetIds, type) {
+    var $$ = this, config = $$.config;
+    $$.mapToTargetIds(targetIds).forEach(function (id) {
+        $$.withoutFadeIn[id] = (type === config.data_types[id]);
+        config.data_types[id] = type;
+    });
+    if (!targetIds) {
+        config.data_type = type;
+    }
+};
+c3_chart_internal_fn.hasType = function (type, targets) {
+    var $$ = this, types = $$.config.data_types, has = false;
+    (targets || $$.data.targets).forEach(function (t) {
+        if ((types[t.id] && types[t.id].indexOf(type) >= 0) || (!(t.id in types) && type === 'line')) {
+            has = true;
+        }
+    });
+    return has;
+};
+c3_chart_internal_fn.hasArcType = function (targets) {
+    return this.hasType('pie', targets) || this.hasType('donut', targets) || this.hasType('gauge', targets);
+};
+c3_chart_internal_fn.isLineType = function (d) {
+    var config = this.config, id = isString(d) ? d : d.id;
+    return !config.data_types[id] || ['line', 'spline', 'area', 'area-spline', 'step', 'area-step'].indexOf(config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isStepType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return ['step', 'area-step'].indexOf(this.config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isSplineType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return ['spline', 'area-spline'].indexOf(this.config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isAreaType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return ['area', 'area-spline', 'area-step'].indexOf(this.config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isBarType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'bar';
+};
+c3_chart_internal_fn.isScatterType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'scatter';
+};
+c3_chart_internal_fn.isPieType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'pie';
+};
+c3_chart_internal_fn.isGaugeType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'gauge';
+};
+c3_chart_internal_fn.isDonutType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'donut';
+};
+c3_chart_internal_fn.isArcType = function (d) {
+    return this.isPieType(d) || this.isDonutType(d) || this.isGaugeType(d);
+};
+c3_chart_internal_fn.lineData = function (d) {
+    return this.isLineType(d) ? [d] : [];
+};
+c3_chart_internal_fn.arcData = function (d) {
+    return this.isArcType(d.data) ? [d] : [];
+};
+/* not used
+ function scatterData(d) {
+ return isScatterType(d) ? d.values : [];
+ }
+ */
+c3_chart_internal_fn.barData = function (d) {
+    return this.isBarType(d) ? d.values : [];
+};
+c3_chart_internal_fn.lineOrScatterData = function (d) {
+    return this.isLineType(d) || this.isScatterType(d) ? d.values : [];
+};
+c3_chart_internal_fn.barOrLineData = function (d) {
+    return this.isBarType(d) || this.isLineType(d) ? d.values : [];
+};

src/util.js

+var isValue = c3_chart_internal_fn.isValue = function (v) {
+    return v || v === 0;
+},
+    isFunction = c3_chart_internal_fn.isFunction = function (o) {
+        return typeof o === 'function';
+    },
+    isString = c3_chart_internal_fn.isString = function (o) {
+        return typeof o === 'string';
+    },
+    isUndefined = c3_chart_internal_fn.isUndefined = function (v) {
+        return typeof v === 'undefined';
+    },
+    isDefined = c3_chart_internal_fn.isDefined = function (v) {
+        return typeof v !== 'undefined';
+    },
+    ceil10 = c3_chart_internal_fn.ceil10 = function (v) {
+        return Math.ceil(v / 10) * 10;
+    },
+    asHalfPixel = c3_chart_internal_fn.asHalfPixel = function (n) {
+        return Math.ceil(n) + 0.5;
+    },
+    diffDomain = c3_chart_internal_fn.diffDomain = function (d) {
+        return d[1] - d[0];
+    },
+    isEmpty = c3_chart_internal_fn.isEmpty = function (o) {
+        return !o || (isString(o) && o.length === 0) || (typeof o === 'object' && Object.keys(o).length === 0);
+    },
+    notEmpty = c3_chart_internal_fn.notEmpty = function (o) {
+        return Object.keys(o).length > 0;
+    },
+    getOption = c3_chart_internal_fn.getOption = function (options, key, defaultValue) {
+        return isDefined(options[key]) ? options[key] : defaultValue;
+    },
+    hasValue = c3_chart_internal_fn.hasValue = function (dict, value) {
+        var found = false;
+        Object.keys(dict).forEach(function (key) {
+            if (dict[key] === value) { found = true; }
+        });
+        return found;
+    },
+    getPathBox = c3_chart_internal_fn.getPathBox = function (path) {
+        var box = path.getBoundingClientRect(),
+            items = [path.pathSegList.getItem(0), path.pathSegList.getItem(1)],
+            minX = items[0].x, minY = Math.min(items[0].y, items[1].y);
+        return {x: minX, y: minY, width: box.width, height: box.height};
+    };

src/zoom.js

+c3_chart_internal_fn.initZoom = function () {
+    var $$ = this, d3 = $$.d3, config = $$.config;
+    $$.zoom = d3.behavior.zoom()
+        .on("zoomstart", function () {
+            $$.zoom.altDomain = d3.event.sourceEvent.altKey ? $$.x.orgDomain() : null;
+        })
+        .on("zoom", function () { $$.redrawForZoom.call($$); });
+    $$.zoom.scale = function (scale) {
+        return config.axis_rotated ? this.y(scale) : this.x(scale);
+    };
+    $$.zoom.orgScaleExtent = function () {
+        var extent = config.zoom_extent ? config.zoom_extent : [1, 10];
+        return [extent[0], Math.max($$.getMaxDataCount() / extent[1], extent[1])];
+    };
+    $$.zoom.updateScaleExtent = function () {
+        var ratio = diffDomain($$.x.orgDomain()) / diffDomain($$.orgXDomain),
+            extent = this.orgScaleExtent();
+        this.scaleExtent([extent[0] * ratio, extent[1] * ratio]);
+        return this;
+    };
+};
+c3_chart_internal_fn.updateZoom = function () {
+    var $$ = this, z = $$.config.zoom_enabled ? $$.zoom : function () {};
+    $$.main.select('.' + CLASS.zoomRect).call(z);
+    $$.main.selectAll('.' + CLASS.eventRect).call(z);
+};
+c3_chart_internal_fn.redrawForZoom = function () {
+    var $$ = this, d3 = $$.d3, config = $$.config, zoom = $$.zoom, x = $$.x, orgXDomain = $$.orgXDomain;
+    if (!config.zoom_enabled) {
+        return;
+    }
+    if ($$.filterTargetsToShow($$.data.targets).length === 0) {
+        return;
+    }
+    if (d3.event.sourceEvent.type === 'mousemove' && zoom.altDomain) {
+        x.domain(zoom.altDomain);
+        zoom.scale(x).updateScaleExtent();
+        return;
+    }
+    if ($$.isCategorized() && x.orgDomain()[0] === orgXDomain[0]) {
+        x.domain([orgXDomain[0] - 1e-10, x.orgDomain()[1]]);
+    }
+    $$.redraw({
+        withTransition: false,
+        withY: false,
+        withSubchart: false
+    });
+    if (d3.event.sourceEvent.type === 'mousemove') {
+        $$.cancelClick = true;
+    }
+    config.zoom_onzoom.call($$.api, x.orgDomain());
+};