[GRASS-user] movement direction surface in r.drain

[Markus Neteler]

On Wed, Dec 19, 2012 at 3:25 PM, Margherita Di Leo <diregola at gmail.com> wrote:
> Hi All,
>
> I have a friction map, a start polygon and an end polygon and would like to
> find the least cost path, meaning not a corridor but a thin line.

I tried the r.drain example from the manual page to no avail:

http://trac.osgeo.org/grass/ticket/1840

Test data in GRASS 7 source code:
http://trac.osgeo.org/grass/browser/grass/trunk/raster/r.drain/tests

Markus