[GRASS-dev] r.walk issues for 6.4.2?

[Michael Barton]

So I guess it is not a resolution issue.

Michael
____________________
C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice: 	480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:          480-965-7671 (SHESC),  480-727-0709 (CSDC)
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On Oct 10, 2011, at 2:52 PM, Claudine Gravel Miguel wrote:

> Hello, 
> so I reran it making sure I had the region at a high resolution (90m), and the result is the same. I'm attaching the output txt of the whole computation (with the info on the region) and the image showing the resulting raster. On a related note, this 'flat' walk was also produced when I tried running r.walk in a re-projection of a geoTIFF in UTM. This both in GRASS 6.4 and 7.
> 
> Thanks
> Claudine
> 
> On Mon, Oct 10, 2011 at 2:32 PM, Michael Barton <Michael.Barton at asu.edu> wrote:
> Hi Markus,
> 
> I didn't read this close enough. Thanks for the explanation.
> 
> Michael
> ______________________________
> C. Michael Barton
> Director, Center for Social Dynamics & Complexity
> Professor of Anthropology, School of Human Evolution & Social Change
> Arizona State University
> Tempe, AZ  85287-2402
> USA
> 
> voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
> fax:          480-965-7671(SHESC), 480-727-0709 (CSDC)
> www:    http://csdc.asu.edu, http://shesc.asu.edu
>                http://www.public.asu.edu/~cmbarton
> 
> On Oct 10, 2011, at 12:33 AM, Markus Metz wrote:
> 
> >  With large horizontal resolutions, e.g.
> > 1km, the time required to cover the distance from one cell to the next
> > cell is much larger than most encountered slopes. At least the r.walk
> > algorithm behaves likes this, which results in a sort of manhattan
> > distance map as obtained in a flat landscape.
> 
> 
> <grass_cmd_history_walk.txt><Results_walk_Conical.png>

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