From 35a7109a6af58ae69ef7f2566ded2d11b9a0f743 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torkel=20=C3=96degaard?= <torkel@grafana.com>
Date: Fri, 8 Dec 2017 11:45:44 +0100
Subject: [PATCH] refactoring: fixing bug when all values are null

---
 public/app/core/time_series2.ts | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/public/app/core/time_series2.ts b/public/app/core/time_series2.ts
index c1caf82b348..5a242a5abc1 100644
--- a/public/app/core/time_series2.ts
+++ b/public/app/core/time_series2.ts
@@ -44,12 +44,18 @@ export function updateLegendValues(data: TimeSeries[], panel) {
 }
 
 export function getDataMinMax(data: TimeSeries[]) {
-  const datamin = _.minBy(data, (series) => {
-    return series.stats.min;
-  }).stats.min;
-  const datamax = _.maxBy(data, (series: TimeSeries) => {
-    return series.stats.max;
-  }).stats.max;
+  let datamin = null;
+  let datamax = null;
+
+  for (let series of data) {
+    if (datamax === null || datamax < series.stats.max) {
+      datamax = series.stats.max;
+    }
+    if (datamin === null || datamin > series.stats.min) {
+      datamin = series.stats.min;
+    }
+  }
+
   return {datamin, datamax};
 }