[GRASS-user] Warning message while using r.in.gdal

[Markus Neteler]

2010/2/26 António Rocha <antonio.rocha at deimos.com.pt>:
> Hi Markus
> Here goes the gdalinfo euro_latlon.tif output:
>
> Driver: GTiff/GeoTIFF
> Files: Desktop/euro_area_latlong.tif
> Size is 1721, 595
> Coordinate System is:
> GEOGCS["WGS 84",
>   DATUM["unknown",
>       SPHEROID["unnamed",6378137,298.2572235629972]],
>   PRIMEM["Greenwich",0],
>   UNIT["degree",0.0174532925199433]]
> Origin = (-36.828910669041655,74.067423529421049)
> Pixel Size = (0.066529120923939,-0.066529120923939)
> Metadata:
>  AREA_OR_POINT=Area
> Image Structure Metadata:
>  INTERLEAVE=BAND
> Corner Coordinates:
> Upper Left  ( -36.8289107,  74.0674235) ( 36d49'44.08"W, 74d 4'2.72"N)
> Lower Left  ( -36.8289107,  34.4825966) ( 36d49'44.08"W, 34d28'57.35"N)
> Upper Right (  77.6677064,  74.0674235) ( 77d40'3.74"E, 74d 4'2.72"N)
> Lower Right (  77.6677064,  34.4825966) ( 77d40'3.74"E, 34d28'57.35"N)
> Center      (  20.4193979,  54.2750101) ( 20d25'9.83"E, 54d16'30.04"N)
> Band 1 Block=1721x2 Type=Int16, ColorInterp=Gray
>
> Hope this helps

yes and no: garbage in - garbage out...

Apparently the metadata aren't properly stored in the file (what should
be there?). Since GRASS cannot guess them, it remains "unknown".

If you *know* the correct metadata, you can assign them to the
GeoTIFF file with

gdal_translate -a_srs epsg:XXXX geotiff_bad.tif geotiff_good.tif
r.in.gdal geotiff_good.tif out=geotiff_good

cheers,
Markus