I'd like to use osgEarth to create flat projected terrains, and I've only had partial success (used the
dc_state_plane.earth and arc_imagery_roads_utm.earth examples as reference).
First the partial success: I have to geotiffs in Transverse Mercator created by a proprietary mapping application, one for Europe and one for Croatia. My first attempt was to just use the Europe map and reproject it to a Polar Stereographic projection (just for the fun of it:), and it worked well. However, when I wanted to add a hires inset for Croatia, I got black "projection bands" around the Croatia inset:
Re: Creating a flat terrain in a specified projection
Ah, the dreaded Polar Stereographic projection. I know the banding of which you speak. GDAL has difficulties handling PS imagery when reprojecting - particularly when discontiguous regions come into play. At one point I started to build explicit PS support into osgEarth (you'll see it in the SpatialReference class) but never really completed it.
See if you have better luck with another projection.