michaelfcoyle/sharpgpx

Read and write GPX

Michael Coyle

A developer based in Squamish, BC with expertise in C#, C++, IoT, sensor fusion, software architecture, emergency management, and Search and Rescue.

sharpgpx's Issues

How to write a gpx with garmin extensions ?

hi,
Can you add an example of how to write a GPX file with garmin extensions ? In my case, I want to add a list of "Categories" to a waypoint.

thanks.

Enhancement / GPX Import

In some software packages, sample is from Garmin BaseCamp, it's possible to provide two GPS positions, and tell the software to create a route from A to B.

When exporting to a GPX, these routing points are included, but I don't think SharpGPX can see / import these waypoints, but will import the start and finish, and I end up with a straight line.

My current workaround is to convert the route to a track, and back to a route in the Garmin software, and then export it. This way I get the routing points in a way that SharpGPX can see.

Would be nice if SharpGPX could read these routing points directly.

Sample file:

<?xml version="1.0" encoding="utf-8"?><gpx creator="Garmin Desktop App" version="1.1" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/WaypointExtension/v1 http://www8.garmin.com/xmlschemas/WaypointExtensionv1.xsd http://www.garmin.com/xmlschemas/TrackPointExtension/v1 http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd http://www.garmin.com/xmlschemas/ActivityExtension/v1 http://www8.garmin.com/xmlschemas/ActivityExtensionv1.xsd http://www.garmin.com/xmlschemas/AdventuresExtensions/v1 http://www8.garmin.com/xmlschemas/AdventuresExtensionv1.xsd http://www.garmin.com/xmlschemas/PressureExtension/v1 http://www.garmin.com/xmlschemas/PressureExtensionv1.xsd http://www.garmin.com/xmlschemas/TripExtensions/v1 http://www.garmin.com/xmlschemas/TripExtensionsv1.xsd http://www.garmin.com/xmlschemas/TripMetaDataExtensions/v1 http://www.garmin.com/xmlschemas/TripMetaDataExtensionsv1.xsd http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensions/v1 http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensionsv1.xsd http://www.garmin.com/xmlschemas/CreationTimeExtension/v1 http://www.garmin.com/xmlschemas/CreationTimeExtensionsv1.xsd http://www.garmin.com/xmlschemas/AccelerationExtension/v1 http://www.garmin.com/xmlschemas/AccelerationExtensionv1.xsd http://www.garmin.com/xmlschemas/PowerExtension/v1 http://www.garmin.com/xmlschemas/PowerExtensionv1.xsd http://www.garmin.com/xmlschemas/VideoExtension/v1 http://www.garmin.com/xmlschemas/VideoExtensionv1.xsd" xmlns="http://www.topografix.com/GPX/1/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:wptx1="http://www.garmin.com/xmlschemas/WaypointExtension/v1" xmlns:gpxtrx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1" xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:trp="http://www.garmin.com/xmlschemas/TripExtensions/v1" xmlns:adv="http://www.garmin.com/xmlschemas/AdventuresExtensions/v1" xmlns:prs="http://www.garmin.com/xmlschemas/PressureExtension/v1" xmlns:tmd="http://www.garmin.com/xmlschemas/TripMetaDataExtensions/v1" xmlns:vptm="http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensions/v1" xmlns:ctx="http://www.garmin.com/xmlschemas/CreationTimeExtension/v1" xmlns:gpxacc="http://www.garmin.com/xmlschemas/AccelerationExtension/v1" xmlns:gpxpx="http://www.garmin.com/xmlschemas/PowerExtension/v1" xmlns:vidx1="http://www.garmin.com/xmlschemas/VideoExtension/v1">

  <metadata>
    <link href="http://www.garmin.com">
      <text>Garmin International</text>
    </link>
    <time>2022-03-01T09:23:15Z</time>
    <bounds maxlat="-37.464001178741455" maxlon="144.37371969223022" minlat="-37.479579448699951" minlon="144.36998605728149" />
  </metadata>

  <rte>
    <name>Test</name>
    <extensions>
      <gpxx:RouteExtension>
        <gpxx:IsAutoNamed>false</gpxx:IsAutoNamed>
        <gpxx:DisplayColor>Magenta</gpxx:DisplayColor>
      </gpxx:RouteExtension>
      <trp:Trip>
        <trp:TransportationMode>Hiking</trp:TransportationMode>
      </trp:Trip>
    </extensions>
    <rtept lat="-37.464001178741455" lon="144.37371969223022">
      <time>2022-03-01T09:22:53Z</time>
      <name>Amblers Lane Track</name>
      <sym>Waypoint</sym>
      <extensions>
        <trp:ViaPoint>
          <trp:CalculationMode>ShorterDistance</trp:CalculationMode>
          <trp:ElevationMode>Standard</trp:ElevationMode>
        </trp:ViaPoint>
        <gpxx:RoutePointExtension>
          <gpxx:Subclass>0000487249030C005A040FE56600E35B6FAA</gpxx:Subclass>
          <gpxx:rpt lat="-37.464001178741455" lon="144.37371969223022">
            <gpxx:Subclass>0B0048724903BFC501002116000000000000</gpxx:Subclass>
          </gpxx:rpt>
          <gpxx:rpt lat="-37.464001178741455" lon="144.37371969223022" />
          <gpxx:rpt lat="-37.464001178741455" lon="144.37371969223022" />
          <gpxx:rpt lat="-37.464001178741455" lon="144.37371969223022" />
          <gpxx:rpt lat="-37.464001178741455" lon="144.37371969223022">
            <gpxx:Subclass>0B0048724903BFC501001F000A0009CB0C03</gpxx:Subclass>
          </gpxx:rpt>
          <gpxx:rpt lat="-37.464001178741455" lon="144.37371969223022" />
          <gpxx:rpt lat="-37.464430332183838" lon="144.37311887741089" />
          <gpxx:rpt lat="-37.464838027954102" lon="144.37294721603394" />
          <gpxx:rpt lat="-37.465417385101318" lon="144.37277555465698" />
          <gpxx:rpt lat="-37.466104030609131" lon="144.3724536895752" />
          <gpxx:rpt lat="-37.466425895690918" lon="144.37232494354248" />
          <gpxx:rpt lat="-37.466747760772705" lon="144.37211036682129" />
          <gpxx:rpt lat="-37.466940879821777" lon="144.37196016311646" />
          <gpxx:rpt lat="-37.467241287231445" lon="144.37191724777222" />
          <gpxx:rpt lat="-37.467606067657471" lon="144.37193870544434" />
          <gpxx:rpt lat="-37.468593120574951" lon="144.3718957901001" />
          <gpxx:rpt lat="-37.469022274017334" lon="144.37183141708374" />
          <gpxx:rpt lat="-37.469215393066406" lon="144.37172412872314" />
          <gpxx:rpt lat="-37.469687461853027" lon="144.37168121337891" />
          <gpxx:rpt lat="-37.470073699951172" lon="144.3714451789856" />
          <gpxx:rpt lat="-37.470223903656006" lon="144.3714451789856" />
          <gpxx:rpt lat="-37.470438480377197" lon="144.37150955200195" />
          <gpxx:rpt lat="-37.471017837524414" lon="144.37140226364136" />
          <gpxx:rpt lat="-37.47136116027832" lon="144.37129497528076" />
          <gpxx:rpt lat="-37.471854686737061" lon="144.3714451789856" />
          <gpxx:rpt lat="-37.472090721130371" lon="144.3714451789856" />
          <gpxx:rpt lat="-37.472305297851562" lon="144.37140226364136" />
          <gpxx:rpt lat="-37.472455501556396" lon="144.371337890625" />
          <gpxx:rpt lat="-37.472648620605469" lon="144.37131643295288" />
          <gpxx:rpt lat="-37.472820281982422" lon="144.37138080596924" />
          <gpxx:rpt lat="-37.473249435424805" lon="144.37120914459229" />
          <gpxx:rpt lat="-37.473464012145996" lon="144.37105894088745" />
          <gpxx:rpt lat="-37.473721504211426" lon="144.37103748321533" />
          <gpxx:rpt lat="-37.473914623260498" lon="144.37108039855957" />
          <gpxx:rpt lat="-37.474343776702881" lon="144.37114477157593" />
          <gpxx:rpt lat="-37.475073337554932" lon="144.37114477157593" />
          <gpxx:rpt lat="-37.475459575653076" lon="144.37120914459229" />
          <gpxx:rpt lat="-37.475695610046387" lon="144.3712306022644" />
          <gpxx:rpt lat="-37.475953102111816" lon="144.37129497528076" />
          <gpxx:rpt lat="-37.476210594177246" lon="144.37150955200195" />
          <gpxx:rpt lat="-37.476425170898438" lon="144.37174558639526" />
          <gpxx:rpt lat="-37.476575374603271" lon="144.37191724777222" />
          <gpxx:rpt lat="-37.476811408996582" lon="144.37193870544434" />
          <gpxx:rpt lat="-37.477068901062012" lon="144.37193870544434" />
          <gpxx:rpt lat="-37.477262020111084" lon="144.37183141708374" />
          <gpxx:rpt lat="-37.477755546569824" lon="144.37165975570679" />
          <gpxx:rpt lat="-37.478163242340088" lon="144.37120914459229" />
          <gpxx:rpt lat="-37.4788498878479" lon="144.37056541442871" />
          <gpxx:rpt lat="-37.479257583618164" lon="144.37030792236328" />
          <gpxx:rpt lat="-37.479472160339355" lon="144.37011480331421" />
          <gpxx:rpt lat="-37.479579448699951" lon="144.36998605728149">
            <gpxx:Subclass>0B0048724903DD1F8F001F000A008ACA0000</gpxx:Subclass>
          </gpxx:rpt>
          <gpxx:rpt lat="-37.479579448699951" lon="144.36998605728149" />
          <gpxx:rpt lat="-37.479579448699951" lon="144.36998605728149" />
          <gpxx:rpt lat="-37.479579448699951" lon="144.36998605728149" />
          <gpxx:rpt lat="-37.479579448699951" lon="144.36998605728149">
            <gpxx:Subclass>0B0048724903DD1F0F002117000073010000</gpxx:Subclass>
          </gpxx:rpt>
        </gpxx:RoutePointExtension>
      </extensions>
    </rtept>
    <rtept lat="-37.479579448699951" lon="144.36998605728149">
      <time>2022-03-01T09:22:55Z</time>
      <name>Amblers Lane Track and unpaved track</name>
      <sym>Waypoint</sym>
      <extensions>
        <trp:ViaPoint>
          <trp:CalculationMode>ShorterDistance</trp:CalculationMode>
          <trp:ElevationMode>Standard</trp:ElevationMode>
        </trp:ViaPoint>
        <gpxx:RoutePointExtension>
          <gpxx:Subclass>0000487249030C005A040FE566000D59C1A9</gpxx:Subclass>
        </gpxx:RoutePointExtension>
      </extensions>
    </rtept>
  </rte>
</gpx>

Unable to import GPX Track to Garmin Basecamp

Hi!
Thanks for creating this! I had to make 3x changes to a track for it to import to Garmin Basecamp:

1. Add version = "1.1" to the header:
   <gpx version = "1.1" xmlns:xsd="

2. remove empty email tag
   

3. remove empty license tag
   

Add Example to write extensions for Gpx , Route, Tracks and waypoint.

Allow for using custom XmlSerializer settings

Hi, would it be possible to allow to use custom serialization settings from public API?

I'm experimenting with uploading files processed by SharpGPX to Strava and it seems that they don't accept UTF-16 encoded files.
I'd like to be able to configure the serialization so that it's possible to create and UTF-8 file.

I spent quite some time analyzing the source code and I think I have some ideas, so I could prepare a PR if You want some help, but I think it would be good to read some comment from You side before that.

Bug or Feature? .ToXML does not include route information

Hi!

My app imports a gpx file. The gpx file can have multiple routes and tracks.
I loop through each, and create a new gpx for each, and save each route and track to a local (SQLite) database.

//Create a standalone GPX
var newGPX = new GpxClass()
{
  Metadata = new metadataType()
  {
    name = route.name,
    desc = route.desc,
  },
};
newGPX.Routes.Add(route);

When I inspect newGPX at runtime, it has a single route, wih 104 rtept entries, and looks fine. My database schema is simple (SQLite):

var r = new Route
{
  Name = route.name,
  Distance = mapDistanceKm,
  Description = route.desc,
  GPX = newGPX.ToXml()
};

When I inspect the GPX field I get this:

<?xml version="1.0" encoding="utf-16"?>
<gpx xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.1" xmlns="http://www.topografix.com/GPX/1/1">
  <metadata>
    <name>Day 1 - Beeripmo Walk</name>
  </metadata>
</gpx>

Why does .ToXml not include the route?
Is this by design, or am I missing something?

Waypoints get set to null when there's no track.

SharpGPX/GPX1_1/gpx.cs line 37 :

internal void Preserialize()
        {
            metadata?.Preserialize();
            if (metadata.IsNullOrEmpty())
                metadata = null;

            rte?.Preserialize();
            if (rte.IsNullOrEmpty())
                rte = null;

            wpt?.Preserialize();
            if (wpt.IsNullOrEmpty())
                wpt = null;

            trk?.Preserialize();
            if (trk.IsNullOrEmpty())
                wpt = null;    // <---------
        }

Exception when trying to deserialize from file: System.InvalidOperationException: There is an error in XML document

Hm... something is not happy:

Exception when trying to deserialize from file: System.InvalidOperationException: There is an error in XML document. ---> System.InvalidOperationException: <ShapingPoint xmlns='http://www.garmin.com/xmlschemas/TripExtensions/v1'> was not expected
  at System.Xml.Serialization.XmlSerializationReaderInterpreter.ReadRoot (System.Xml.Serialization.XmlTypeMapping rootMap) [0x0004f] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.XML/System.Xml.Serialization/XmlSerializationReaderInterpreter.cs:182 
  at System.Xml.Serialization.XmlSerializationReaderInterpreter.ReadRoot () [0x00022] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.XML/System.Xml.Serialization/XmlSerializationReaderInterpreter.cs:87 
  at System.Xml.Serialization.XmlSerializer.Deserialize (System.Xml.Serialization.XmlSerializationReader reader) [0x00017] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.XML/System.Xml.Serialization/XmlSerializer.cs:369 
   --- End of inner exception stack trace ---
  at System.Xml.Serialization.XmlSerializer.Deserialize (System.Xml.Serialization.XmlSerializationReader reader) [0x00052] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.XML/System.Xml.Serialization/XmlSerializer.cs:379 
  at System.Xml.Serialization.XmlSerializer.Deserialize (System.Xml.XmlReader xmlReader) [0x00026] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.XML/System.Xml.Serialization/XmlSerializer.cs:358 
  at Utility.Serializer.Deserialize[T] (System.IO.TextReader reader, System.Type[] types, System.Xml.XmlReaderSettings settings) [0x0002b] in <f7fbc81366034ae9805dafa1da1c0dad>:0 

GPX file causing the issue. Export from Garmin Basecamp on Windows: You Yangs.txt

Assuming it's a problem with SharpGPX, but it could be me...

Bug? .toXml(); / No ele data

Hi!

Not sure if this is a bug, or a "feature"?

I sample / save a GPS position every few seconds to something like this:
track.Tracks[0].trkseg[0].trkpt[0..7]
I have 8 of these, and all have the field "ele" populated with actual numbers

I use GPX = track.ToXml()

GPX:
"<?xml version=\"1.0\" encoding=\"utf-16\"?>\n<gpx xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" version=\"1.1\" xmlns=\"http://www.topografix.com/GPX/1/1\">\n <metadata>\n <name>01/03/2022 20:03</name>\n <desc>Description</desc>\n <author>\n <name>Something</name>\n </author>\n <bounds minlat=\"0\" minlon=\"0\" maxlat=\"0\" maxlon=\"0\" />\n </metadata>\n <trk>\n <name>01/03/2022 20:03</name>\n <trkseg>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:00:21.757776+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:00:26.731947+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:00:31.736753+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:00:36.737293+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:02:59.958214+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:03:03.512607+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:03:03.530771+11:00</time>\n </trkpt>\n <trkpt lat=\"0\" lon=\"0\">\n <time>2022-03-01T20:03:04.95386+11:00</time>\n </trkpt>\n </trkseg>\n </trk>\n</gpx>"

Note that I have fudged the lat/lon fields, and can be ignored.

Why no elevation data? (ele) ?