[gdal-dev] Meteosat 2nd Gen projection (MSG GEO)

Jose Luis Gomez Dans josegomez at gmx.net
Wed Feb 27 16:25:21 EST 2008


Hi,
I have some data from MSG, in ENVI format. The raster file does not have any projection information, and I would like to reproject it into WGS84. After some lurking about the GDAL codebase, it appears that the proj4 invocation is given by "+proj=geos +h=35785831 +a=6378169 +b=6356583.8". So I set up to reproject my file:

$ gdalwarp -of GTiff -t_srs "EPSG:4326" -s_srs "+proj=geos +h=35785831 +a=6378169 +b=6356583.8" \
input_file.dat output_file.tif
ERROR 1: Unable to compute a transformation between pixel/line
and georeferenced coordinates for input_file.dat
There is no affine transformation and no GCPs.

Is this the right way of doing this? There's very little information on this projection anywhere.

Thanks!
Jose
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