r.cost question

[bob at math.umn.edu]

Howdy.  For me, r.cost will not work.  This is not new, as 27 Aug 1999
I sent a message to this list, "r.cost for dummies," wondering about it.
There was no response at that time.


Which is to say that when I follow the nice Seeds tutorial on cost 
surfaces, the step where the "cost_dist" is produced will instead yield
a blank "no data" frame.  This also will happen with other, "real" 
projects.  The verbose option gives:

GRASS:~/grass > r.cost -vk input=cost output=cost_dist coord=445775,310875
Creating some temporary files ...
Reading cost ... 100%
Initializing output  100%
Finding cost path
Writing cost_dist ...  100%

This will BTW also produce a blank field without the -k option.  Providing 
also a stopping coord does not cure the illness.  The cost_dist layer is 
empty.

Any ideas?

Adios,
Chris
-- 
C.S. Cornuelle 
School of Mathematics/MCIM, University of Minnesota
206 Church St. SE, Minneapolis, MN 55455
(612) 626-8930v, (612) 624-2333f, bob at math.umn.edu
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