[GRASS-user] negative slope values and movement costs

[Gerald Nelson]

Why do you want negative slope values?

What r.cost does is calculate the smallest cost of moving over a friction surface, which could be slope, to one or more destinations.

The manual for the command is here.

http://grass.itc.it/gdp/html_grass63/r.cost.html

Jerry

---- Original message ----
>Date: Thu, 1 Feb 2007 09:05:33 +0100 (CET)
>From: mlage at usal.es  
>Subject: Re: [GRASS-user] negative slope values and movement costs  
>To: grassuser at grass.itc.it
>
>Thank you Jerry.
>How does r.cost produce negative slope values?
>
>Miguel
>
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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