Hi Bob, I have to disappoint you - sorry. I gave up after a while and use a "flat" earth now... (you can't see the mountains anyway if you don't zoom too much ;-)
Cheers Christoph On Nov 28, 2007 2:48 PM, Bob Kuehne <[EMAIL PROTECTED]> wrote: > hi chris, did you ever get this figured out? i'm running into the same > problem. thanks! bob > > > On Sep 19, 2007, at 5:19 AM, Christoph Ehrler wrote: > > > Hi @ all, > > > > probably it's a noob question... > > I downloaded some data from NASA Blue Marble > > (http://visibleearth.nasa.gov/view_set.php?categoryId=2355&p=3) > > and tried to produce a whole earth representation with topography. > > > > But the height field does not match the texture. North and South are > > mixed up as well as East and West. But when I start mirroring and > > flipping the height field JPG it does not resolve much. > > > > Height field and texture are perfectly matching when using a normal > > image viewer. > > The problem is, if I use the height field as a texture the "mountains" > > show up at a complete different location than they show up as "real > > bumps" when using the same file as height map. > > > > > > > > Height Field: > > BMNG Raw Topography > > srtm_ramp2.world.21600x10800.jpg > > > > Texture: > > Blue Marble Next Generation w/ Topography and Bathymetry > > world.topo.bathy.200406.3x21600x10800.png > > > > > > I converted both data sources with gdal_translate to TIF files and > > added a image pyramid with gdaladdo but it didn't resolve anything. > > I am building the paged database to single files (IVE) instead of > > building to an archive (OSGA) but as I can remember it makes no > > difference for this problem too. > > > > > > > > gdal_translate srtm_ramp2.world.21600x10800.jpg srtm_ramp2.world. > > 21600x10800.tif > > gdaladdo -r average srtm_ramp2.world.21600x10800.tif 2 4 8 16 32 > > > > gdal_translate world.topo.bathy.200406.3x21600x10800.png > > world.topo.bathy.200406.3x21600x10800.tif > > gdaladdo -r average world.topo.bathy.200406.3x21600x10800.tif 2 4 8 > > 16 32 > > > > > > osgdemd --whole-globe -d srtm_ramp2.world.21600x10800.jpg > > --whole-globe -t world.topo.bathy.200406.3x21600x10800.tif -l 5 -v > > 1000 --geocentric -o blue_marble2.ive > > > > > > > > Some suggestions welcome :) > > Thanks > > Christoph > > _______________________________________________ > > osg-users mailing list > > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > bob kuehne > founder and ceo - blue newt software > www.blue-newt.com 734/834-2696 > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
