[GRASSLIST:9341] Re: ArcInfo Grid vs r.in/out.gdal

David Finlayson david.p.finlayson at gmail.com
Tue Dec 6 14:13:35 EST 2005


I didn't know that grass referenced the lower left corner. I assumed
it was the cell center. Where is this documented?

David

On 12/3/05, Maciek Sieczka <werchowyna at epf.pl> wrote:
> Hi
>
> As we know, in ArcInfo grids the coordinates refer to the cell centre.
> In Grass it is the bottom-left corner of the cell. Now, when I import an
> ArcInfo binary grid into Grass using r.in.gdal, is it automatically
> shifted half a pixel resolution to cope with this issue or not? How
> about r.out.gdal when writing to an ArcInfo binary or ascii grid?
>
> Best,
> Maciek
>
>
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--
David Finlayson
Marine Geology & Geophysics
School of Oceanography
Box 357940
University of Washington
Seattle, WA  98195-7940
USA

Office: Marine Sciences Building, Room 112
Phone: (206) 616-9407
Web: http://students.washington.edu/dfinlays




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