From fabb516c720201d6562edf5c01106dcdd67f38b3 Mon Sep 17 00:00:00 2001
From: James Muscat <jamesremuscat@gmail.com>
Date: Mon, 17 Jun 2024 17:58:10 +0100
Subject: [PATCH] Don't record null values.

---
 src/analysis/trackData.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/analysis/trackData.js b/src/analysis/trackData.js
index 6fbcc8b..5c42e00 100644
--- a/src/analysis/trackData.js
+++ b/src/analysis/trackData.js
@@ -64,7 +64,7 @@ export const TrackData = types.model({
             }
           }
 
-          if (!prevValue || prevValue[0] !== value[0]) {
+          if (value[0] && (!prevValue || prevValue[0] !== value[0])) {
             // Value has changed! How exciting
             // console.log(label, prevValue[0], '==>', value[0]);
             self.series.get(label).data.push(Datum.create({