On Thursday 28 January 2010, Rich Shepard wrote: > On Thu, 28 Jan 2010, Rich Shepard wrote: > > I'm stymied trying to get output from r.param.scale that is equivalent > > to the example on the bottom of the man page. > > Resetting g.region to the input elevation map without any additional > options and adding a zmult factor of 5 appears to help. When the specified > param is 'features' I see what should be ridges and channels, but no peaks > or pits. > > Changing the calculated param to either elev or profc yields blank maps > when I try to display them with d.rast. > > Suggestions on how to properly apply this module will be very helpful. > > Rich > _______________________________________________
Hi, Are you working with data in a projected coordinate system? Are you x,y and z coordinates all in the same units. What is the general nature of the terrain you are looking at? Try adjusting the window size to get generalized features-- remember that the quantification of terrain is a fractal problem. Cheers, Dylan -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user