[GRASS-user] Problem with r.basin in grass7

[Margherita Di Leo]

Hi Andrea,

On Tue, Nov 18, 2014 at 3:55 AM, Andrea Timmermann <timmermann at gmx.at>
wrote:

> Hi Helmut,
>
> Thanks for your email.
> I set again the area and resolution with g.region before running r.basin.
> I also deleted all files except my DEM.
>
> Now I get a different error ...
>
> When I run
>  "*r.basin map=map at Elevation prefix=o
> coordinates=-71.10394196,43.9865230801 threshold=19005
> dir=C:\\Users\\Andrea\\Basins*"
>
> I get:
> "...
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> *Building topology for vector map <o_map_ord_1 at Elevation>... Registering
> primitives... 10 primitives registered 558 vertices registered Building
> areas... 0 areas built 0 isles built Attaching islands... Attaching
> centroids... Number of nodes: 20 Number of primitives: 10 Number of points:
> 0 Number of lines: 10 Number of boundaries: 0 Number of centroids: 0 Number
> of areas: 0 Number of isles: 0 Updating attributes... r.to.vect complete.
> All in RAM calculation... ERROR: Region resolution and raster map
> <o_map_strahler> resolution differs. Run 'g.region rast=o_map_strahler' to
> set proper region resolution*"
>
> I run *g.region rast=o_map_strahler, *but then I have to delete all files
> and start over again running r.basin.
>

Yes if you change the region you have to delete the files created in the
previous run (if they have same name) or allow overwrite.



-- 
Best regards,

Dr. Margherita DI LEO
Scientific / technical project officer

European Commission - DG JRC
Institute for Environment and Sustainability (IES)
Via Fermi, 2749
I-21027 Ispra (VA) - Italy - TP 261

Tel. +39 0332 78 3600
margherita.di-leo at jrc.ec.europa.eu

Disclaimer: The views expressed are purely those of the writer and may not
in any circumstance be regarded as stating an official position of the
European Commission.
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