[GRASS5] GRASS and ESRI: ASCII format

Markus Neteler neteler at geog.uni-hannover.de
Wed Feb 7 11:35:50 EST 2001


On Wed, Feb 07, 2001 at 10:43:02AM -0500, Frank Warmerdam wrote:
> Markus Neteler wrote:
> > My question is more related to *translate* the corner-oriented ESRI
> > manner to cell center oriented GRASS manner without getting a shift
> > of cells.
> 
> Markus, 
> 
> The ESRI lower left corner values refer to the center of the lower left
> pixel. 

Frank,

as far as I know there is both "xllcorner" and "xllcenter".
My data have "xllcorner", so I assume it's not the center.

The strange thing is that odd cols/rows come out while I would expect
even cols/rows (one less in each direction). Probably I am just
paranoid?

Markus

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