[GRASS-user] v.dissolve and r.cost problems

[Paolo Cavallini]

Glynn Clements ha scritto:

> The entire notion of "least cost" is based upon the assumption that
> the cost must always be non-negative.

Bingo, you got it!
I had (by my mistake in mapcalc parameters) a few negative cells.
Now r.cost runs, and I'doing further testing.
I think your suggestions should be implemented: in the current situation
the user doesn't have a clue of what is the problem.
Thanks a lot!
-- 
Paolo Cavallini: http://faunalia.it/pc