Am 18.03.2016 um 18:57 schrieb César Martínez:
Thanks André, datum_shift.csv is (partially) what I was looking for.
I see however that EPSG:15933 transformation operation is missing on
that list (which in this Spanish example is usually the most accurate
one), maybe because it uses the NTv2 method.
In any case, how can I use the datum_shift.csv parameters to construct
a OGRCoordinateTransformation instance?
The parameters go into the +towgs84 parameter string of GDAL/Proj.4.
NTv2 grids are treated differently, you have to apply +nadgrids and the
path to the file.
HTH,
André Joost
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