[Gdal-dev] Transformation from UTM32 WGS84 (EPSG:32632) to latlong (EPSG:4326)

shortyII sschantz at bfs.de
Fri Aug 10 03:09:00 EDT 2007



Frank Warmerdam-2 wrote:
> 
> Hi,
> 
> The above coordinates are not UTM 32 meter values.  The earth is only
> roughly 40 million meters around at the equator, so an x offset of
> 32 million meters is crazy.  Transverse Mercator rapidly degrees past
> about
> 10 degrees off the central meridian.
> 
> So, I think the problem is that the input coordinate system is not UTM 32
> *or* you have the units wrong or the file was essentially screwed up by
> some previous attempt to convert it to utm 32.
> 
> 

Hi,
This coordinates are UTM 32. The first 2 numbers of the easting describe the
UTM strip (32). This notation is quite common (at least at  german federal
agency for cartography and geodesie). 
I could read about this problem quite often here in the mailing-archive, but
I couldn't find any solution. Is there a possibility to correct the gtiff .
The federal agenceny explains:
"As download text files are offered that contain a definition of the
georeferencing for use in the PROJECT command of ArcInfo Workstation. For
the UTM projections the indication "xshift 3..." applies to a use of the
parameters under OUTPUT. For a use under INPUT "xshift -3..." has to be
applied or the accurate definition of your UTM coordinates has to be
considered, respectively."
Can gdalwarp do any "xshifts" ?
Thanks for helping!

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