[gdal-dev] NITF driver reads GEOLOB, but does not write it.

[Even Rouault]

It is true that the driver doesn't write automatically the GEOLOB TRE, but you 
can manually do it by using the TRE creation option of the NITF driver. See 
http://gdal.org/frmt_nitf.html and http://gdal.org/frmt_nitf_advanced.html. 
This will require you to format it "at hand" properly from the georeferencing 
info. But you should also likely write the GEOPSB TRE, so that the resulting 
NITF file is valid in a non GDAL based NITF reader. I've found some more info 
here about those TREs : 
http://www.gwg.nga.mil/ntb/baseline/docs/stdi0006/NCDRD_20Dec06.pdf and  
http://www.ittvis.com/portals/0/pdfs/envi/NITF_Module.pdf.

Le jeudi 23 septembre 2010 15:58:08, turtlewax a écrit :
> Just wanted to confirm. NITFs potentially store location data in 2 places.
> IGEOLO  and GEOLOB. But GEOLOB has more accuracy (more decimal places).
> 
> There was a ticket which modified the NITF driver to read GEOLOB (if
> present),
> http://trac.osgeo.org/gdal/ticket/3180
> 
> But the NITF driver does not write GEOLOB. If confirmed, I would suggest
> opening a ticket for this.