- Combining multiple GPX files
- Converting NMEA logfiles to GPX format
- Repairing broken GPX file
- Separating tracks to individual GPX files
- Generating time/speed histogram
- Converting to X3D format for 3D visualization
- Redirecting data output
- Using interactive mode
- Crop GPS track (interactive)
Download
Aug 7, 2013
Example: Crop GPS track (interactive)
The following example demonstrates the use of interactive mode to crop GPS tracklogs to a specific latitude/longitude area:
C:\gpsmash> GPSMash -loadgpx C:\gpx -interactive
Loading from C:\gpx\20100220.gpx...
Loading from C:\gpx\20100221.gpx...
Loaded 46 track(s) consisting of 8321 point(s).
Entering interactive mode.
bounds
Latitude 37.25134 38.39394 39.53654
Longitude -122.13790 -120.98160 -119.82540
Elevation -10.92600 1102.91000 2216.74500
deselect all
8321 new point(s) deselected.
select lat 37.5 38.5
1433 new point(s) selected.
cleanup
Cleaned up data
deselect all
1433 new point(s) deselected.
select lon -122.0 -121.0
1055 new point(s) selected.
cleanup
Cleaned up data
outgpx cropped.gpx
Saving to cropped.gpx...
end
C:\gpsmash> _
The data is loaded initially using the -loadgpx command. Then, GPSMash enters interactive mode (-interactive).
The bounds command recalculates and displays the bounds of the loaded data.
The deselect all / select lat 37.5 38.5 sequence sets the selection only to points in the latitude range of 37.5 to 38.5 degrees.
The cleanup command removes the unselected points from the data buffer.
The deselect all / select lon -122.0 -121.0 sequence sets the selection only to points in the longitude range of -122.0 to -121.0 degrees.
The second cleanup command removes the unselected points from the data buffer.
Finally, the data is saved in GPX format to a file named cropped.gpx in the current folder (outgpx cropped.gpx).
