[GRASS-user] problems with r.cost

Gerald Nelson gnelson at uiuc.edu
Fri May 25 08:54:56 EDT 2007

I've emailed with Laura about r.terracost and she would be happy to have someone convert the make file to work with grass6. 


---- Original message ----
>Date: Fri, 25 May 2007 17:54:06 +1200
>From: Hamish <hamish_nospam at yahoo.com>  
>Subject: Re: [GRASS-user] problems with r.cost  
>To: "Jonathan Greenberg" <greenberg at ucdavis.edu>
>Cc: grassuser at grass.itc.it
>Jonathan Greenberg wrote:
>> Hamish (and all): Paul is working with me on this project, and the
>> system we are running it on is a 64-bit debian system with plenty of
>> RAM/scratch space (and the version we are using is the 64-bit grass
>> release) -- why would memory problems be an issue?  We tried lowering
>> the % memory but it doesn't seem to help...
>does it work for a smaller region or coarser resolution? for example try
>changing it from 3 to 30m res.
>ie can you determine if is it a 64bit computational error or an out-of-
>resources error? (does r.cost work for the spearfish DEM on your system?)
>I can't answer why memory problems would be an issue, but that doesn't
>mean they aren't! Large mem grass is still untested territory in many
>places, maybe you have discovered something new.
>Did r.terracost work? How does that compare to r.cost? (if it's good,
>I'm thinking maybe Laura would allow us to merge it in CVS as a
>companion to r.terraflow, or package as a GEM)
>Or does that use GRASS 5 sites as starting/end points and need porting?
>grassuser mailing list
>grassuser at grass.itc.it
Gerald Nelson
Professor, Dept. of Agricultural and Consumer Economics
University of Illinois, Urbana-Champaign
office: 217-333-6465 
cell: 217-390-7888
315 Mumford Hall
1301 W. Gregory
Urbana, IL 61801

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