This sounds like a potentially interesting and valuable idea. I don't know what the 'cost' might be in terms of building this functionality into other modules.
Michael On Mar 1, 2012, at 12:00 PM, <[email protected]> wrote: > Date: Thu, 01 Mar 2012 09:27:16 +0100 > From: Benjamin Ducke <[email protected]> > Subject: [GRASS-dev] Add a cost distance measure to GRASS GIS lib > To: "grass-dev" <[email protected]> > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Hi All, > > I have been pondering this for a while and would > like to know if people on this list think the > following would be a feasible/useful addition to > GRASS (7): > > How about, in addition to the MASK raster, we'd > also allow the user to specify a COST raster? > This would allow all raster modules that currently > use an euclidean distance measure (KDE, IDW, ...) > to use a cost-based measure instead, without adding > more options to the individual modules. > > In addition to the COST raster, we could modify the > basic distance function in the GRASS GIS lib to > automatically return a cost-based result if the > COST raster is present. This way, there would have > to be no or only minimal modifications to existing > modules. > > For anisotropic cost distances, we could allow a > DIRECTION raster. > > Ben _____________________ C. Michael Barton Visiting Scientist, Integrated Science Program National Center for Atmospheric Research & University Consortium for Atmospheric Research 303-497-2889 (voice) Director, Center for Social Dynamics & Complexity Professor of Anthropology, School of Human Evolution & Social Change Arizona State University www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
