From a1c3d83401972d1efcace8e466d052664184a093 Mon Sep 17 00:00:00 2001
From: StefanBruens <stefan.bruens@rwth-aachen.de>
Date: Sun, 13 Aug 2023 20:47:33 +0200
Subject: [PATCH] Add missing gx namespace for kml extensions

According to https://developers.google.com/kml/documentation/kmlreference#kml-extension-namespace-and-the-gx-prefix

> This namespace URI must be added to the <kml> element in any KML file using gx-prefixed elements

As the exported kml tracks always contain such elements, add
the namespace.
---
 apps/recorder/interface.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/recorder/interface.html b/apps/recorder/interface.html
index cc9762d20..24dba9b64 100644
--- a/apps/recorder/interface.html
+++ b/apps/recorder/interface.html
@@ -30,7 +30,7 @@ function saveKML(track,title) {
   track = filterGPSCoordinates(track);
   // Now output KML
   var kml = `<?xml version="1.0" encoding="UTF-8"?>
-<kml xmlns="http://www.opengis.net/kml/2.2">
+<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2">
   <Document>
     <Schema id="schema">
 ${track[0].Heartrate!==undefined ? `<gx:SimpleArrayField name="heartrate" type="int">