Jo wrote: > Robert Vollmert schreef: >> I believe gpsbabel supports this kind of operation: >> >> gpsbabel -i gpx -f raw.gpx -x >> radius,exclude,distance=1.5M,lat=30.0,lon=-90.0 -o gpx -F filtered.gpx >> > Of course if you use the actual position of your house as the center of > that radius, it would still be trivial to find where you live. That's > why I tried to exclude points using a polygon (saved as a text file). > This didn't seem to work though.
There was a presentation by microsoft at google concerning managing large groups of anonymous gps traces posted here a while back. Their result for best masking of origin was to choose a random point in a circle up to .5km from the origin to use as the center of a 1km circle to exclude gave the best results. _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
