On Thu, Oct 25, 2012 at 9:11 AM, Robert Buckley
<[email protected]> wrote:
> I remembered that I did some testing a while back with custom coordinate
> operations.
>
> I had tried to create an operation between EPSG:31467 and EPSG:25832 using
> the BETA2007.gsb file.
>
> It seems that it is this configuration that messed up my system...or I
> simply did it wrong.
>
> This was the content of "epsg_operations.,properties"
>
> 31467,25832=PARAM_MT["NTv2", \PARAMETER["Latitude and longitude difference
> file", "BETA2007.gsb"]]

While not impossible, this is odd: you are trying to use a grid to
transform between two
projected systems.
All the grids I've seen so far are used to switch between geographic
ones, normally
the file is a latitude/longitude grid shift, in your case maybe
between 4314 and 4258,
the geographic systems under the projected ones:

http://prj2epsg.org/epsg/31467
http://prj2epsg.org/epsg/25832

Cheers
Andrea


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