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
