Hi Andy, running r.watershed for the whole globe is IMHO not necessary. Just run r.watershed for each continent (except Europe/Asia) and isles (greenland, UK, ...). Everything that is parted by an ocean or a channel can be processed independently.
Best regards Soeren 2015-10-02 0:27 GMT+02:00 Andy Wickert <[email protected]>: > On Thu, Oct 1, 2015 at 3:52 PM, Markus Neteler <[email protected]> wrote: >> >> On Thu, Oct 1, 2015 at 7:10 AM, Andy Wickert <[email protected]> >> wrote: >> > Dear GRASS developers, >> > >> > Would you know of an easy way to make r.watershed work in >> > latitude/longitude >> > over the pole of a planet (in my case, over Antarctica) by specifying >> > that >> > the polar boundary in lat/lon is not a sink? >> >> Wouldn't be a stereographic projection more appropriate? >> >> >> https://grass.osgeo.org/uploads/images/Gallery/raster/polar_stereographic.png >> >> Best >> Markus > > > Thanks for the suggestion. However, my goal is to run r.watershed across the > whole globe, so a stereographic projection would an ad-hoc solution. > > (I have also had problems in the past projecting between polar stereographic > and lat/lon, but this is a secondary issue.) > > Andy > > _______________________________________________ > grass-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-dev _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
