> > Has anyone worked on using GPS tracks elevation information to improve SRTM ? > > GPS elevation tracks aren't better than SRTM in general, due to their > poor vertical resolution.
Just a comment about that : This is, at least for my garmin 60cx, not the case. In about any moutain zone, with no or few tree coverage, I'm almost sure I achieve a 2 to 4 vertical meters precision. (By comparing my result to our national map maker or by a point I have checked serveral times at serveral different dates ) however, It doesn't create a good source in a sense that, at least in the alps, osm tracks coverage (even considered being 40m wide) might well be under 0.0000001% of the total surface. A model only based on that will surely looks like completly ugly and wrong. -- Sylvain Letuffe [EMAIL PROTECTED] qui suis-je : http://slyserv.dyndns.org _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
