Make axis tuning look better for negative values

e945cadd · Evgeny · e73fbf42 · e945cadd · e945cadd · e945cadd
Commit e945cadd authored Jul 07, 2016 by Evgeny
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Showing with 20 additions and 6 deletions

c3.js c3.js +10 -3

c3.min.js c3.min.js +0 -0

axis.js src/axis.js +10 -3

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--- a/c3.js
+++ b/c3.js
@@ -5007,8 +5007,9 @@
            } else {
                sizesY = {
                    min: minmax.minY,
-                    max: minmax.maxY
-                }
+                    max: minmax.maxY,
+                    step: (max - min) / 10
+                };
            }

            
@@ -5018,7 +5019,13 @@
            }

            if(sizesY.min < 0 && minmax.minY < 0){
-                sizesY.min = minmax.minY + minmax.minY * 0.2;
+                while(sizesY.min < minmax.minY){
+                    sizesY.min += sizesY.step;
+                }
+
+                if(sizesY.min >= minmax.minY){
+                    sizesY.min -= sizesY.step;
+                }
            }

            $$.api.axis.range({

--- a/c3.min.js
+++ b/c3.min.js
--- a/src/axis.js
+++ b/src/axis.js
@@ -405,8 +405,9 @@ c3_chart_internal_fn.tuneAxis = function(sync, callback){
        } else {
            sizesY = {
                min: minmax.minY,
-                max: minmax.maxY
-            }
+                max: minmax.maxY,
+                step: (max - min) / 10
+            };
        }

        
@@ -416,7 +417,13 @@ c3_chart_internal_fn.tuneAxis = function(sync, callback){
        }

        if(sizesY.min < 0 && minmax.minY < 0){
-            sizesY.min = minmax.minY + minmax.minY * 0.2;
+            while(sizesY.min < minmax.minY){
+                sizesY.min += sizesY.step;
+            }
+
+            if(sizesY.min >= minmax.minY){
+                sizesY.min -= sizesY.step;
+            }
        }

        $$.api.axis.range({