Fix error when only one state history entry. (home-assistant#1750)

zsarnett · Oct 14, 2018 · 5d5871f · 5d5871f
1 parent 96e5589
commit 5d5871f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/panels/lovelace/cards/hui-sensor-card.js b/src/panels/lovelace/cards/hui-sensor-card.js
@@ -120,6 +120,8 @@ class HuiSensorCard extends EventsMixin(LitElement) {
     const min = Math.floor(Math.min.apply(null, values) * 0.95);
     const max = Math.ceil(Math.max.apply(null, values) * 1.05);
 
+    if (values.length === 1) values.push(values[0]);
+
     const yRatio = (max - min) / height;
     const xRatio = width / (values.length - 1);