> Yep, it's a boundary effect at the edge of each SRTM tile. Sorry to disturb like this in the SRTM's issues, I've seen some "improvement" concerning the opencyclemap.org SRTM about snow on high elevation submits.
While I have seen also some of this "boundary" effects you are talking about, it is not as strong as the problem we have in the alps (and maybe anywhere else ?) about snow covered mountains. Looks like someone of the opencyclemap (is that you andy ?) have included some sort of interpolation or any other means to replace those old "white zones" by "at least something" See here what I'm talking about : http://www.opencyclemap.org/?zoom=16&lat=45.3086&lon=5.85346&layers=B000 The POI "dent de crolles" is the highest point and you see the contours being "very" incorect As I am on the process of constructing an hiking map, I am searching for solutions... which might not even exist. I first suppose that there are not "free data" for contours at all (exept free for personnal use SRTM data) am I right ? Has anyone tried other sources ? what about SRTM v3 ? is there a wiki page that gather those research ? Has anyone worked on using GPS tracks elevation information to improve SRTM ? -- Sylvain Letuffe [EMAIL PROTECTED] qui suis-je : http://slyserv.dyndns.org _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
