[GRASS-user] Shortest path for a new road

[Michael Barton]

Use r.drain with your cost surface (made from the destination point) and the
source point.

Michael


On 1/26/07 4:12 AM, "Wolf Bergenheim" <wolf+grass at bergenheim.net> wrote:

> Hi!
> 
> I need to create a plan for a new road from a known source point, to a
> known destination area. I have a grid of elevation and land use for the
> region. So from that I can calculate a cost weight using r.walk or
> r.cost Now by using this I'd like to calculate a new raster or vector
> which would show the least cost path from source to destination.
> 
> Is this possible? I know that with Arc/Info I can use the Spatial
> Analyst to do this, but I'd like to be able to do it with GRASS. Any ideas?
> 
> --Wolf

__________________________________________
Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton