On 3/5/21 3:00 PM, [email protected] wrote:
On 05.03.21 06:02, jeremy benwell wrote:
I was wondering if GPX files contain CRS information? I saved some
waypoints in my garmin gps and then used GPSBabel to upload those waypoints
to my computer and create a GPX file. The map datum on my gps was set to
GDA 94. Does my GPX file contain the CRS that my GPS was set to when I
saved the waypoints (i.e. GDA 94) and if so do I need to make sure my QGIS
project CRS is set to GDA 94 also?
Any help would be much appreciated thank you!
The headers in .gpx files from my Garmin eTrex 20 reference
<http://www.topografix.com/GPX/1/1/gpx.xsd>
That file states:
"GPX schema version 1.1 - For more information on GPX and this schema,
visit http://www.topografix.com/gpx.asp GPX uses the following
conventions: all coordinates are relative to the WGS84 datum. All
measurements are in metric units."
Other than that reference, my .gpx files do not contain any CRS info.
I believe that the .gpx coordinates always use the WGS84 datum
(EPSG:4326) and that there is no way to change that in the .gpx file.
See <https://www.topografix.com/gpx.asp> for details.
Cordially,
--
Garth Fletcher
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