[GRASS-user] r. walk and sites which can be reached in a certain time

[Anna Petrášová]

On Mon, Oct 24, 2016 at 7:52 AM, Phil Burgdorf <P_Burgdorf at web.de> wrote:
> Hello there,
> my name is Phil and I'm a PhD Student in Archaeology and I'm analiesing a
> small area in bavaria. I'm trying to locate archaeological sites round
> different strating points. Therefor I created a cost map using r. walk. The
> result is fine but how can I adapted my values. Actualy I'm interrested in
> sites which can be reached in, let's say, one hour.   I've tried to change
> the values for max costs but I didn't get any results. Do i have to use a
> nother algorithm? here must be an easy way to define the max cost for that
> analysis.
>
> I couldn''t find any help in the mailing list's archive and I#m totally
> lost. Can you help me?

max_cost will do the trick, don't forget that the time is in seconds.
You can also use raster algebra (r.mapcalc) to extract the area within
certain time.

Anna

>
> Cheers
> Phil
>
>
> _______________________________________________
> grass-user mailing list
> grass-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user