On Tue, Apr 13, 2010 at 3:16 PM, Sharon Baruch-Mordo <sharon...@yahoo.com> wrote: > Hello list, > > Is there anyway to calculate in R the 3D surface of a polygon spatial object > using a DEM grid similar to the ArcView tool developed by Jenness (2004; > http://www.jennessent.com/arcview/surface_tools.htm)?
Any way? Well yes, but that way may mean you implementing the algorithm described in the paper. It looks quite simple, and probably best written in C for speed. A pure R implementation might be very slow for large DEMs. I don't know of any R implementation of a surface area algorithm for R at the moment. Barry _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
