From 123b2ce9674dc2e051118dbd900cd8c88c0ba213 Mon Sep 17 00:00:00 2001
From: Lebewesen <github@sning.de>
Date: Mon, 22 May 2017 23:31:01 +0200
Subject: [PATCH] Fix: ignore null altitudes (#19)

---
 js/main.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/js/main.js b/js/main.js
index c899b9e..648e3a4 100755
--- a/js/main.js
+++ b/js/main.js
@@ -46,7 +46,9 @@ function displayChart() {
   data.addColumn('number', 'altitude');
   var altLen = altitudes.length;
   for (var i = 0; i < altLen; i++) {
-    data.addRow([(i + 1), Math.round((altitudes[i] * factor_m))]);
+    if (altitudes[i]!=null){
+      data.addRow([(i + 1), Math.round((altitudes[i] * factor_m))]);
+    }
   }
 
   var options = {