[GRASS-user] Question about least cost path

[M S]

Is the path terminating in local minimums?  It is my understanding
that r.drain overcomes pits/sinks in a DEM by traversing lowest
locations until goes off map.

Mark

On Sun, Feb 21, 2010 at 6:44 AM, johannnes83 <j.m.signer at gmail.com> wrote:
>
> Dear All,
>
> I am using least cost path to model migration of wildlife through the
> landscape. In my understanding from what I have read on this list and in the
> grass manual I do the following steps:
>
> 1.) r.walk or r.cost for the cost distance.
> 2.) r.drain where the starting point is the end point from the cost
> distance.
>
> However, how do I overcome a local minimum (valleys) with r.drain?
>
> Any hints would be appreciated.
>
> Thanks Johannes
> --
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