mendhak/gpslogger

Speed GPX1.1

Closed this issue · 6 comments

romakh80 commented

Hello!
Please, add code to write speed information while logging in GPX 1.1 format.

gpslogger/loggers/gpx/Gpx11FileLogger.java
// course and speed are not part of the GPX 1.1 specification
// We could put them in an extensions such if we really wanted.
Wanted!

Thanks!

mendhak commented

What will you be using to process the speed? Do you know what extension it is expecting. Or a better question is, what's the most common extension that popular GPX parsing software would expect?

I did some searching I was able to find that Garmin has a <xxxxx:speed> extension.

https://www8.garmin.com/xmlschemas/TrackPointExtensionv2.xsd
https://gis.stackexchange.com/questions/74222/what-are-the-units-for-garmins-gpx-gpxtpxspeed

But I don't know if this is widely used.

romakh80 commented

Hi!
I'm currently using software which creates gpx1.1 files with speed data in extensions using <speed>. But as you rightly noticed Garmin requires <gpxtpx:speed> to be used. Suggest to maintain Preferences switches: "Write gpx 1.1 speed info (yes|no)", "Use speed or gpxtpx:speed tags... maybe both".

mendhak commented

Thanks for that @dennisguse , it's very useful for me to go through that code. I'm going to try adding this gpxtpx Garmin extension since OpenTracks uses it too.

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mendhak commented

If you are able to test I have uploaded an APK here: https://github.com/mendhak/gpslogger/releases/tag/v120-rc2 under Assets.

This APK is incompatible with F-Droid so if you install it you will lose all your GPSLogger data and files.

There is no toggle, the extension is added if GPX 1.1 logging is enabled. I have included speed and bearing.

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mendhak commented

v120 is in the releases and on F-Droid

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