[GRASS-dev] Re: GRASS-dev] Add a cost distance measure to GRASS GIS
michael.barton at asu.edu
Thu Mar 1 12:11:41 EST 2012
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.
On Mar 1, 2012, at 12:00 PM, <grass-dev-request at lists.osgeo.org> wrote:
> Date: Thu, 01 Mar 2012 09:27:16 +0100
> From: Benjamin Ducke <benducke at fastmail.fm>
> Subject: [GRASS-dev] Add a cost distance measure to GRASS GIS lib
> To: "grass-dev" <grass-dev at lists.osgeo.org>
> <1330590436.12493.140661043300969 at webmail.messagingengine.com>
> 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
> For anisotropic cost distances, we could allow a
> DIRECTION raster.
C. Michael Barton
Visiting Scientist, Integrated Science Program
National Center for Atmospheric Research &
University Consortium for Atmospheric Research
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
More information about the grass-dev