On Wed, Mar 27, 2013 at 2:15 PM, Jaisen Nedumpala <[email protected]> wrote: .., > I have already imported the tiles I want, to the Location and tried > r.contour. But It didn't returned the contour.
Please explain what went wrong for you. Error or empty map or ...? It works like this (example: 100m contour lines): g.region rast=cdnd44h -p r.contour input=cdnd44h output=cdnd44h_contours minlevel=-100 maxlevel=10000 step=100 d.vect cdnd44h_contours Or, in the wwGUI: - load DEM map into layer manager (Add raster map icon) - right-mouse on DEM (e.g. cdnd44h): zoom to map --> it will be shown - Menu Raster -> Terrain analysis -> Generate contour lines --> r.contour GUI pops up Required tab: - raster map name: cdnd44h - output vector map: cdnd44h_contours Optional tab (entries in meter: - minlevel=-100 <-- if not specified, the DEM minimum will be used, so better define it - maxlevel=10000 <-- if not specified, the DEM maximum will be used, so better define it - step=100 <-- 100m contour lines Run button Likewise for r.watershed and other analytical procedures. Hope this helps, Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
