On Wednesday 18 November 2009, Michael Barton wrote: > Beyond r.param.scale, is there a good method anyone knows of to find > peaks or hilltops? I'm more interested in the tops of hills/high > points than the single cell that is the highest. > > Thanks > Michael
Hi, The r.param.scale uses some common cuttoffs for curvatures to define features. A geomorphic classification may accomplish what you are looking for, i.e. generate some training areas that define 'summits', through in several terrain-shape indices, and then run a supervised classification. Unsupervised classification can sometimes work well for this kind of task, however it is data-driven and results can vary from location to location. Cheers, Dylan > ____________________ > C. Michael Barton > Director, Center for Social Dynamics & Complexity > Professor of Anthropology, School of Human Evolution & Social Change > Arizona State University > > Phone: 480-965-6262 > Fax: 480-965-7671 > www: www.public.asu.edu/~cmbarton, http://csdc.asu.edu > > > > > > > > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
