Hi Andre,
As far as I know, the transformation from one coordinate system to
another goes as follow:
- convert source coordinate to latlon
- compute grid shift, either with +towgs84 parameters or by a grid
shift raster
- convert resulting latlon to target coordinate
Ntv2 is a Canadian format, where longitudes west of Greenwich are
positive, and east negative. This is horrible, but that is what things are
So this coordinate is really East. And it works for cs2cs and vector
data. Could it be that Gdal makes a mistake about this Canadian aspect
of ntv2?
On 06/25/2013 04:36 PM, Andre Joost wrote:
Hi Jan,
what strikes me is that
pj_apply_gridshift(): failed to find a grid shift table for
location (6.7638472dW,53.0926086dN)
and
The source raster has epsg:28992
does not fit together. The first is in Ireland, and EPSG:28992 is
valid in the Netherlands. Should it not rather be 6.76 East?
Greetings,
André Joost
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