Closes #1309

Doughnut.addData() broken for index of 0 #1309

diff --git a/src/Chart.Doughnut.js b/src/Chart.Doughnut.js
index 12e9f225551c8f3eb3c63d4f8d4bf38d0921a63f..e63bf9e502dd124fc19aabf5b409e08e2b78ca0d 100644 (file)
--- a/src/Chart.Doughnut.js
+++ b/src/Chart.Doughnut.js
@@ -91,7 +91,7 @@
                        return segmentsArray;
                },
                addData : function(segment, atIndex, silent){
-                       var index = atIndex || this.segments.length;
+                       var index = atIndex !== undefined ? atIndex : this.segments.length;
                        this.segments.splice(index, 0, new this.SegmentArc({
                                value : segment.value,
                                outerRadius : (this.options.animateScale) ? 0 : this.outerRadius,