[gdal-dev] Overwriting Georeferencing Information of a GeoTIFF file

[Andreas Neumann]

Thanks Nikos and Benoît!

The solution with the BASELINE profile seems to work perfect. Haven't
thought about that!

Thank you for your quick help!

Andreas


On Tue, May 5, 2009 2:31 pm, Benoît Andrieu wrote:
> Hi,
>
> Some times ago, I tried to update the georeferencing information by code
> but it didn't seem to work.
> My solution was to first destroy the informations by using gdal_translate
> with -co PROFILE=BASELINE
> Then to use the new Tiff with a prj file to have a GTiff
>
> PROFILE=[GDALGeoTIFF/GeoTIFF/BASELINE]: Control what non-baseline tags are
> emitted by GDAL.
>
>     * With GDALGeoTIFF (the default) various GDAL custom tags may be
> written.
>     * With GeoTIFF only GeoTIFF tags will be added to the baseline.
>     * With BASELINE no GDAL or GeoTIFF tags will be written. BASELINE is
> occationally useful when writing files to be read by
> applications intolerant of unrecognised tags.
>
> There could be some better way...
>
> Regards,
>
> Benoît Andrieu
> bea at ixsea.com
> benoit.andrieu at gmail.com
>
> ----- Original Message -----
> From: "Andreas Neumann" <a.neumann at carto.net>
> To: <gdal-dev at lists.osgeo.org>
> Sent: Tuesday, May 05, 2009 1:53 PM
> Subject: [gdal-dev] Overwriting Georeferencing Information of a GeoTIFF
> file
>
>
>> Hi GDAL users/developers,
>>
>> Is it possible to overwrite georeferencing information of an existing
>> geotiff file? For some reasons, some of the files I received have
>> georeferencing information in Millimeters instead of Meters. All of my
>> data uses meters as units.
>>
>> I thought that maybe it is possible to create a tfw file and modify the
>> tfw file, but since the tiff file also has the original georeferencing
>> information in millimeters, the internal georeferencing still takes
>> precedence over the external tfw file. Is there some way to force gdal
>> to
>> prefer the tfw file?
>>
>> If not - what else could I do? Write different projection files?
>>
>> Actually, I don't want to modify the rasters at all, just the
>> georeferencing information.
>>
>> Thanks for any hints,
>> Andreas
>>
>>
>> --
>> Andreas Neumann
>> http://www.carto.net/neumann/
>> http://www.svgopen.org/
>>
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>
>


-- 
Andreas Neumann
http://www.carto.net/neumann/
http://www.svgopen.org/