[GRASS-user] Trouble importing raster dataset

Markus Neteler neteler at osgeo.org
Wed Jul 6 13:33:04 PDT 2016


Hi,

On Tue, Jul 5, 2016 at 11:36 PM, Thomas Adams <tea3rd at gmail.com> wrote:
> Here is more info from error from gdalinfo...
>
> gdalinfo w001001.adf
...
> Coordinate System is:
> GEOGCS["WGS 84",
>     DATUM["WGS_1984",
>         SPHEROID["WGS 84",6378137,298.257223563,
...
>         AUTHORITY["EPSG","9108"]],
>     AUTHORITY["EPSG","4326"]]
> Origin = (-180.000000000000000,90.000007823109627)
> Pixel Size = (0.008333333767951,-0.008333333767951)
> Corner Coordinates:
> Upper Left  (-180.0000000,  90.0000078) (180d 0' 0.00"W, 90d 0' 0.03"N)

^-- as you can see it exceeds the north pole (> 90.0 degN)

> Lower Left  (-180.0000000, -60.0000000) (180d 0' 0.00"W, 60d 0' 0.00"S)
> Upper Right ( 180.0000188,  90.0000078) (180d 0' 0.07"E, 90d 0' 0.03"N)

... in addition, it exceeds 180W as well. Essentially a broken dataset.

Solutions:
https://grass.osgeo.org/grass70/manuals/r.in.gdal.html
* use flag
  -l Force Lat/Lon maps to fit into geographic coordinates (90N,S; 180E,W)

or see the trick of applying
gdal_translate -a_ullr ...

which I added here (the WorldClim data suffer from the same issue):
https://grass.osgeo.org/grass70/manuals/r.in.gdal.html#worldclim.org-data

HTH
Markus


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