[gdal-dev] Processing GRIB files- error in geolocation

[Even Rouault]

Or add extra info to http://trac.osgeo.org/gdal/ticket/2637 which seems to be 
about the same issue

Le Wednesday 09 June 2010 20:28:57 Frank Warmerdam, vous avez écrit :
> António Rocha wrote:
> > Greetings
> >
> > I'm using GDAL to pre-process a few GRIB files and compare it with
> > tkdegrib and I realized that GDAL processing GRIBs have a displacement
> > of a nearly 0,5 pixel SE. I'm using GDAL 1.7.1, released 2010/02/08 . Is
> > there any fix for this issue/problem?
>
> António,
>
> You could try filing a ticket with the file, and a description of why
> you are convinced it is off by half a pixel.  Keep in mind that GDAL's
> georeferencing model has the origin at the top left corner of the top
> left pixel while some raster data/products treats the origin as being at
> the center of the top left pixel (or you can think of it as considering
> the pixels as point).
>
> Best regards,