From: Adileo Barone <adileob@gmail.com>
Date: Mon, 16 May 2016 19:02:57 +0000 (+0200)
Subject: Fixed tooltip not showing in NULL datapoint in multi line chart
X-Git-Tag: v2.1.4~15^2
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=refs%2Fpull%2F2567%2Fhead;p=thirdparty%2FChart.js.git

Fixed tooltip not showing in NULL datapoint in multi line chart
---

diff --git a/src/core/core.tooltip.js b/src/core/core.tooltip.js
index 38ec6eac9..44ceee7c4 100644
--- a/src/core/core.tooltip.js
+++ b/src/core/core.tooltip.js
@@ -197,7 +197,7 @@ module.exports = function(Chart) {
 			var yPositions = [];
 
 			helpers.each(elements, function(el) {
-				if (el) {
+				if (el && el.hasValue()){
 					var pos = el.tooltipPosition();
 					xPositions.push(pos.x);
 					yPositions.push(pos.y);