[Gdal-dev] question about AsciiGrid

[jluis at ualg.pt]

Quoting Frank Warmerdam <fwarmerdam at gmail.com>:

> In general GDAL strictly uses a "pixel is area" view of raster data,
> and the geotransform origin is the top left corner of the top left
> pixel.  Adjustments are made in drivers for formats that take
> different interpretations to convert stuff to the GDAL view.
>
> If you would like, we could add a metadata item for GDALDatasets
> that indicates whether the underlying format considered the pixel
> values point postings or area values if that would help ... and then
> add this to formats as needed

Hi,
I think this is closly related to my early post

http://xserve.flids.com/pipermail/gdal-dev/2005-March/008269.html

The metadata solution seams a good idea to solve this grid vs pixel 
registration
or "pixel is area" vs "pixel is point" issue.

Joaquim