Hi Michael,

The -e extents option in osgdem is geared around lat/longs as you've
found out.  It should be possible to provide extents in other
coordinates given some further work to osgdem, exactly what this
should be I can't say off the top of my head.

Through the summer and into Autumn I'll be doing alot of work on the
VirtualPlanetBuilder project, as part of this work I'll be developing
replacements for osgdem, I bear in mind the issue of different
coordinate systems for specifying things like extents.

Robert.

On 7/5/07, Welsch, Michael, HRD/AB <[EMAIL PROTECTED]> wrote:
Hi,

I'm trying to create a textured model of a certain area with the osgdem
commandline tool.
I define the target area via the e-parameter (extents of the model to
generate) in >latitude/longitude<

>osgdem -t wholeArea.tif -e 7 -46 1 1 -o partOfTheArea.osg

It works great if the source imagery is also in lat/long style.

But this seems to fail if the source imagery is not in lat/long-style,
like UTM data,
although all necessary information for reprojection to lat/long is
provided by the geoTIFF header.
(used UTM geoTIFFs :
http://mpa.itc.it/markus/ecopat2004/landsat_tm7_20010730.tar.gz )
The result is a model without texture.

What's the reason for it ?
Can I achieve the expected result in another way ?


Kind Regards,

Michael





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