Fix bucket size calculation if all values are 0;

00236577 · Alexander Zobnin · 96e91b5a · 00236577
Commit 00236577 authored Mar 24, 2017 by Alexander Zobnin
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public/app/plugins/panel/heatmap/heatmap_ctrl.ts
+5 -1

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--- a/public/app/plugins/panel/heatmap/heatmap_ctrl.ts
+++ b/public/app/plugins/panel/heatmap/heatmap_ctrl.ts
@@ -158,7 +158,11 @@ export class HeatmapCtrl extends MetricsPanelCtrl {
      yBucketSize = this.panel.yAxis.splitFactor;
    } else {
      if (heatmapStats.max === heatmapStats.min) {
-        yBucketSize = heatmapStats.max / Y_BUCKET_NUMBER_DEFAULT;
+        if (heatmapStats.max) {
+          yBucketSize = heatmapStats.max / Y_BUCKET_NUMBER_DEFAULT;
+        } else {
+          yBucketSize = 1;
+        }
      } else {
        yBucketSize = (heatmapStats.max - heatmapStats.min) / yBucketNumber;
      }