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

[Michael Barton]

On Apr 1, 2009, at 12:47 PM, <grass-user-request at lists.osgeo.org> wrote:

> From: Paolo Cavallini <cavallini at faunalia.it>
> Date: April 1, 2009 10:31:04 AM GMT-07:00
> To: Colin Nielsen <colin.nielsen at gmail.com>
> Cc: grass-user <grass-user at lists.osgeo.org>
> Subject: Re: [GRASS-user] v.dissolve and r.cost problems
> Reply-To: cavallini at faunalia.it
>
>
> Colin Nielsen ha scritto:
>
>> However, if you're getting into the hours, I would think it's more
>> likely that your region settings changed. Check "g.region -p" to be
>> sure.
>
> Even if I bring resolution down to a ridiculous amount, it still takes
> forever:
>
> GRASS > g.region -p
> projection: 99 (Transverse Mercator)
> zone:       0
> datum:      rome40
> ellipsoid:  international
> north:      4833555.85595178
> south:      4804093.9108328
> west:       1651001.9360271
> east:       1688830.00910873
> nsres:      1015.92914203
> ewres:      995.47560741
> rows:       29
> cols:       38
> cells:      1102
>
> I tested it on a fractal surface, as you suggested.
> Is r.cost working for somebody?
> All the best, and thanks.
> -- 
> Paolo Cavallini: http://faunalia.it/pc

Do you have a lot of null cells in your region?

Michael


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