Re: [GRASS-user] r.water.outlet map does not display
On Tue, 7 Mar 2017, Sören Gebbert wrote: Yes. The watershed computed via r.water.outlet may be only a single pixel in size, if your outlet point is not located on a stream. Better use r.watershed. Sören, I ran r.watershed first. But, since there are no streams present no map was produced. Because I could not create the mask using r.watershed and r.water.outlet I manually digitized (in the map display window) a smaller area, converted that to a raster map, then used that for the mask. Itzi is now happy and running much faster than before. Thanks, Rich ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] r.water.outlet map does not display
Am 06.03.2017 11:50 PM schrieb "Rich Shepard": Using r.watershed specifying the input DEM and a name for the drainage map I can view the drainage map. When I follow this command with r.water.outlet specifying the drainage map as input, 'watershed' as the output map name, and the coordinates of the designated outlet, no map is displayable. Could this be due to the very flat nature of the terrain? Yes. The watershed computed via r.water.outlet may be only a single pixel in size, if your outlet point is not located on a stream. Better use r.watershed. Rich ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] r.water.outlet map does not display
Hello, You should make sure that the point you give to r.water.outlet is located on a main stream. The accumulation map from r.watershed is useful for this task. If you're not doing so, you might end up with a tiny watershed. Regards, Laurent 2017-03-06 16:50 GMT-06:00 Rich Shepard: > Using r.watershed specifying the input DEM and a name for the drainage map > I can view the drainage map. When I follow this command with r.water.outlet > specifying the drainage map as input, 'watershed' as the output map name, > and the coordinates of the designated outlet, no map is displayable. > > Could this be due to the very flat nature of the terrain? > > Rich > ___ > grass-user mailing list > grass-user@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] r.water.outlet map does not display
Using r.watershed specifying the input DEM and a name for the drainage map I can view the drainage map. When I follow this command with r.water.outlet specifying the drainage map as input, 'watershed' as the output map name, and the coordinates of the designated outlet, no map is displayable. Could this be due to the very flat nature of the terrain? Rich ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user