[GRASSLIST:8943] Re: distance algorithim
Hamish
hamish_nospam at yahoo.com
Tue Nov 8 20:32:06 EST 2005
> r.mapcalc "area.one=1"
> r.cost -k input=area.one output=distance start_rast=past_sites
> r.mapcalc "distance2=if(isnull(present_sites),null(),distance)"
> r.mapcalc "dist_meters=distance2 * (ewres()+nsres())/2."
> r.stats -1 -n input=dist_meters
> This takes about the same cumalative amount of time as my module,
oh yeah, try using 100 percent memory in r.cost to speed things up.
Hamish
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