Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2014-05-06 23:02:38 →
Size: 761
Editor: SamatJain
Comment: Reducing resolution
← Revision 3 as of 2018-07-24 06:25:40 → ⇥
Size: 874
Editor: SamatJain
Comment:
Deletions are marked like this. Additions are marked like this.
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=== Convert KML to GPX w/ gpsbabel ===

{{{#!highlight sh
gpsbabel -i kml -f in.kml -o gpx -F out.gpx
}}}

Contents

  1. GPX fiddling
    1. Remove low accuracy GPS points
    2. Reduce resolution
    3. Convert KML to GPX w/ gpsbabel

GPX fiddling

See GpxSplitter, a program I wrote for splitting multiple GPS tracks from a monolithic GPX track file.

Remove low accuracy GPS points

# Remove low accuracy HDOP
gpsbabel -i gpx -f in.gpx -x discard,hdop=3 -o gpx -F out.gpx

# Remove low accuracy HDOP and VDOP
gpsbabel -i gpx -f in.gpx -x discard,hdop=10,vdop=20,hdopandvdop -o gpx -F out.gpx

Reduce resolution

If a GPX file is too large, run this to reduce the number of points in the file. Removes points within 0.1m of each other (i.e. standing still). 

gpsbabel -i gpx -f in.gpx -x simplify,error=0.0001k -o gpx -F out.gpx

Convert KML to GPX w/ gpsbabel

   1 gpsbabel -i kml -f in.kml -o gpx -F out.gpx

CategoryCheatSheet

SamatsWiki: CheatSheet/GPS (last edited 2018-07-24 06:25:40 by SamatJain)