douglas-watson/aet-calc

Support for GPX files

Opened this issue · 2 comments

garrettj403 commented

This looks great! Unfortunately, I don't use a Garmin watch so I can't export my workout as a TCX file.

It would be great if this could read GPX files.

douglas-watson commented

Does it work if you run your GPX through an online converter first? Or if you run the proprietary file from your watch manufacturer through a TCX converter?

I'd actually written the tool for use with my wife's Fitbit and TCX looked like the most universal format. If I recall correctly, GPX only contains position and time, and TCX adds in heart rate that is needed for the Pa:Hr calculation.

garrettj403 commented

GPX can include HR data. It's in a plain text XML format that should be easy to parse. E.g., this is a single point from a Strava generated GPX file:

   <trkpt lat="49.2817430" lon="-123.0332560">
    <ele>32.8</ele>
    <time>2023-08-30T01:21:46Z</time>
    <extensions>
     <gpxtpx:TrackPointExtension>
      <gpxtpx:hr>157</gpxtpx:hr>
     </gpxtpx:TrackPointExtension>
    </extensions>
   </trkpt>

I tried an online GPX>TCX converter, but it didn't save HR data.