From 1293fcadd24b4ece234e3f7c4c8b0d13dae1aca9 Mon Sep 17 00:00:00 2001
From: Patrick O'Carroll <ocarroll.patrick@gmail.com>
Date: Tue, 20 Feb 2018 09:45:30 +0100
Subject: [PATCH] added an if to check for null to sort null as 0 (#10961)

* added an if to check for null to sort null as 0

* changed 0 to -Infinity
---
 public/app/plugins/panel/graph/legend.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/public/app/plugins/panel/graph/legend.ts b/public/app/plugins/panel/graph/legend.ts
index cd43ac58469..0c8852bf55a 100644
--- a/public/app/plugins/panel/graph/legend.ts
+++ b/public/app/plugins/panel/graph/legend.ts
@@ -151,7 +151,11 @@ module.directive('graphLegend', function(popoverSrv, $timeout) {
 
         if (panel.legend.sort) {
           seriesList = _.sortBy(seriesList, function(series) {
-            return series.stats[panel.legend.sort];
+            let sort = series.stats[panel.legend.sort];
+            if (sort === null) {
+              sort = -Infinity;
+            }
+            return sort;
           });
           if (panel.legend.sortDesc) {
             seriesList = seriesList.reverse();