[gdal-dev] natgrids option in /usr/share/proj/epsg entry?

[Even Rouault]

Sven,

You're the one who decided me to extend the FAQ as it is really becoming 
a FAQ ;-)

So see 
http://trac.osgeo.org/gdal/wiki/FAQCoordinateSystemsAndProjections#DoesGDALOGRusethePROJ.4EPSGinitfileusrshareprojepsg 


Best regards,

Even

Sven Geggus a écrit :
> Dear List,
>
> I have a problem which is related to the one I had in summer.
>
> While it works fine using the +nadgrids option on the command line of
> gdal tools (with +wktext added) it does not seem to work when added
> ad an entry to /usr/share/proj/epsg.
>
> The nadgrids Option is ignored in this case which I can verify using
> strace.
>
> So what would I need to add to /usr/share/proj/epsg to get the
> behaviour of the following command line argument:
>
> '+proj=tmerc +lat_0=0 +lon_0=12 +x_0=4500000 +y_0=0 +k=1.000000 +ellps=bessel +units=m +nadgrids=/usr/share/proj/BETA2007.gsb +wktext'
>
> Here is the entry which does not work:
>
> # DHDN / Gauss-Kruger zone 4
> <31468> +proj=tmerc +lat_0=0 +lon_0=12 +x_0=4500000 +y_0=0 +k=1.000000 +ellps=bessel +units=m +nadgrids=/usr/share/proj/BETA2007.gsb +no_defs  <>
>
>
> Sven
>
>