From c1de65a35aec71bba451a2dba9169591a224c2bf Mon Sep 17 00:00:00 2001
From: braniii <daniel.nagel@protonmail.com>
Date: Wed, 20 Dec 2023 21:56:50 +0100
Subject: [PATCH] Prevent error, when no measurements are avail, fix #8

---
 app/lib/core/interpolation.dart | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/lib/core/interpolation.dart b/app/lib/core/interpolation.dart
index 25161ba..f9fdc81 100644
--- a/app/lib/core/interpolation.dart
+++ b/app/lib/core/interpolation.dart
@@ -283,6 +283,11 @@ class Interpolation {
 
   /// interpolate Measurements
   List<Measurement> interpolate(InterpolFunc interpolFunc){
+    // do not interpolate if empty
+    if (measures.isEmpty) {
+      return <Measurement>[];
+    }
+
     final int dateFrom = measures.first.dateInMs - extrapolationRange;
     final int dateTo = measures.last.dateInMs + extrapolationRange;
     return <Measurement>[