Revision as of 08:44, 12 April 2015

GPX

GPX stands for GPS eXchange Format. It contains data generated by GPS devices.

We make such files available on our website. You can download them on your machine then read them with Google Earth or other geolocation software. We also sometime provide a simplified route (in kml), but the gpx is more exhaustive (in details and with time recording).

Editing

While gpx files are better viewed with Google Earth, they are (sadly) better edited with other softwares. We like QLandkarte GT.

To retain as much as possible of the gpx information, it is best to Edit (right-click+'Edit') the track without converting it to an overlay (that is more easily edited if points are to be moved around), and then export to gpx.

Merging GPX files

This is achieved with gpsbabel, for any number of inputs:

gpsbabel -i gpx -f firstFile.gpx -f secondFile.gpx -f thirdFile.gpx -o gpx -F merged.gpx

Then, from within QLandKarte GT, which keeps them apart, these can be merged completely by Track->Join Tracks (F5).

Links

• on Wikipedia.
• http://wiki.openstreetmap.org/wiki/Edit_GPS_tracks
• http://www.topografix.com/gpx.asp.