recorder 0.11: Fix KML and GPX export when there is no GPS data

apps/recorder/ChangeLog

@@ -14,3 +14,4 @@
 0.08: Memory usage improvements for recorder app itself
 0.09: Show correct number for log in overwrite prompt
 0.10: Fix broken recorder settings (when launched from settings app)
+0.11: Fix KML and GPX export when there is no GPS data

apps/recorder/interface.html

@@ -10,6 +10,9 @@
 var domTracks = document.getElementById("tracks");
 
 function saveKML(track,title) {
+  // only include data points with GPS values
+  track=track.filter(pt=>pt.Latitude!="" && pt.Longitude!="");
+  // Now output KML
   var kml = `<?xml version="1.0" encoding="UTF-8"?>
 <kml xmlns="http://www.opengis.net/kml/2.2">
   <Document>
@@ -37,7 +40,6 @@ ${track.map(pt=>`            <when>${pt.Time.toISOString()}</when>\n`).join("")}
 ${track.map(pt=>`            <gx:coord>${pt.Longitude} ${pt.Latitude} ${pt.Altitude}</gx:coord>\n`).join("")}
           <ExtendedData>
             <SchemaData schemaUrl="#schema">
-
 ${track[0].Heartrate!==undefined ? `<gx:SimpleArrayData name="heartrate">
 ${track.map(pt=>`            <gx:value>${0|pt.Heartrate}</gx:value>\n`).join("")}
               </gx:SimpleArrayData>`:``}
@@ -80,7 +82,7 @@ function saveGPX(track, title) {
     <name>${title}</name>
     <trkseg>`;
   track.forEach(pt=>{
-    gpx += `
+    if (pt.Latitude!="" && pt.Longitude!="") gpx += `
       <trkpt lat="${pt.Latitude}" lon="${pt.Longitude}">
         <ele>${pt.Altitude}</ele>
         <time>${pt.Time.toISOString()}</time>
@@ -122,6 +124,7 @@ function saveCSV(track, title) {
 }
 
 function trackLineToObject(headers, l) {
+  if (l===undefined) return {};
   var t = l.trim().split(",");
   var o = {};
   headers.forEach((header,i) => o[header] = t[i]);
@@ -155,7 +158,7 @@ function getTrackList() {
         Util.showModal(`Loading Track ${trackNo}...`);
         Puck.eval(`(function(fn) {
   var f = require("Storage").open(fn,"r");
-  var headers = f.readLine();
+  var headers = f.readLine().trim();
   var data = f.readLine();
   var lIdx = headers.split(",").indexOf("Latitude");
   if (lIdx >= 0) {
@@ -184,14 +187,14 @@ function getTrackList() {
       var html = `<div class="container">
       <div class="columns">\n`;
       trackList.forEach(track => {
-        var trackData = trackLineToObject(track.info.headers, track.info.l);
         console.log("track", track);
+        var trackData = trackLineToObject(track.info.headers, track.info.l);
         console.log("trackData", trackData);
         html += `
          <div class="column col-12">
            <div class="card-header">
              <div class="card-title h5">Track ${track.number}</div>
-             <div class="card-subtitle text-gray">${trackData.Time.toLocaleDateString(undefined, { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' })}</div>
+             <div class="card-subtitle text-gray">${trackData.Time?trackData.Time.toLocaleDateString(undefined, { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' }):"No track data"}</div>
            </div>
 ${trackData.Latitude ? `
            <div class="card-image">

apps/recorder/metadata.json

@@ -2,7 +2,7 @@
   "id": "recorder",
   "name": "Recorder",
   "shortName": "Recorder",
-  "version": "0.10",
+  "version": "0.11",
   "description": "Record GPS position, heart rate and more in the background, then download to your PC.",
   "icon": "app.png",
   "tags": "tool,outdoors,gps,widget",