From ac5bf729c5de4756194c94b9341d94a015be0bbb Mon Sep 17 00:00:00 2001
From: Internalfx <bryan@internalfx.com>
Date: Tue, 18 Aug 2015 18:39:11 -0700
Subject: [PATCH] Closes #1309

Doughnut.addData() broken for index of 0 #1309
---
 src/Chart.Doughnut.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Chart.Doughnut.js b/src/Chart.Doughnut.js
index 12e9f2255..e63bf9e50 100644
--- 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,
-- 
2.47.2