[Proj] using an NTv2 grid to apply a slight shift to coordinates in a metric CS
andre+joost at nurfuerspam.de
Fri Jan 4 02:27:33 EST 2013
Just re-read the manual:
The shift is done with lat/lon values, and the source and target
ellipsoid are given in the gsa/gsb file. Bbut I am not sure if they are
actually used by Proj4.
Proj.4 always refers to WGS84 as target, so that ellipsoid should be the
The individual shift values are in seconds of lat and lon.
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