From c6cb01aa3b528b0f6c365806e9e42ba6009f4c99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torkel=20=C3=96degaard?= <torkel.odegaard@gmail.com>
Date: Fri, 10 Oct 2014 10:05:12 -0400
Subject: [PATCH] Graph: series tooltip length check

---
 src/app/directives/grafanaGraph.tooltip.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/app/directives/grafanaGraph.tooltip.js b/src/app/directives/grafanaGraph.tooltip.js
index aa5b2abfa42..4c3f5e434d8 100644
--- a/src/app/directives/grafanaGraph.tooltip.js
+++ b/src/app/directives/grafanaGraph.tooltip.js
@@ -120,6 +120,10 @@ function ($) {
         scope.appEvent('setCrosshair',  { pos: pos, scope: scope });
       }
 
+      if (seriesList.length === 0) {
+        return;
+      }
+
       if (scope.panel.tooltip.shared) {
         plot.unhighlight();