[PROJ] Problems adding geoidmodel tag

[Javier Jimenez Shaw]

Thank you Even. The area solution worked very well. (I had to remove
explicitly the geoidmodel tag. Even if the id doesn't exist)

On Tue, 3 Mar 2026 at 18:05, Even Rouault <even.rouault at spatialys.com>
wrote:

>
> Le 03/03/2026 à 17:48, Javier Jimenez Shaw a écrit :
> > How could I know in advance that it is not using the geoid model file
> > from Slovakia? They (unfortunately) use the same vertical system, and
> > the accuracy in both cases is 0.03 m
> >
> https://epsg.org/transformation_10568/ETRS89-CZE-2007-to-ETRS89-CZE-2007-Baltic-1957-height-2.html
> >
> https://epsg.org/transformation_8361/ETRS89-SVK-SKTRF09-to-ETRS89-SVK-SKTRF09-Baltic-1957-height-1.html
>
> Depends on how you perform the coordinate operation itself. But if you
> specify "--area Czechia" with cs2cs or  use the PJ_AREA* member of
> proj_create_crs_to_crs/proj_create_crs_to_crs_from_pj, you should only
> get those for Czechia
>
>
> --
> http://www.spatialys.com
> My software is free, but my time generally not.
>
>
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