[Gdal-dev] Tilting of 7.5" Digital Elevation Models

Ed McNierney ed at topozone.com
Wed Aug 18 11:04:39 EDT 2004

Stefan -

I don't think you can do that with GDAL, since ALL the data in the DEM
is "real" - even if some of it overlaps other adjacen DEMs.

I don't know what the source of your DEMS is, but look at the filename;
the bounding box is often encoded in the filename.

	- Ed
Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
Phone: +1 978 251-4242   Fax: +1 978 251-1396  

-----Original Message-----
From: gdal-dev-bounces at xserve.flids.com
[mailto:gdal-dev-bounces at xserve.flids.com] On Behalf Of
StefanReisser at t-online.de
Sent: Wednesday, August 18, 2004 10:51 AM
To: gdal-dev at xserve.flids.com
Subject: RE: [Gdal-dev] Tilting of 7.5" Digital Elevation Models 


Thanks for the quick responses! I know that the DEMs are projected and
not "tilted". However, what I didn't know was, whether within one single
UTM zone, they are "tilted" in both directions. As each zone has its
central meridian, it's quite obvious that they are.
So thanks again for your help. However, I have another question
concerning the DEMs. Is there a possibility to determine the specific
7.5" section of the DEM with GDAL. That means, can I somehow get the
"real" corner coordinates?

Kind regards, 


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