Hi Wolfgang, I'm using the Nasa SRTM DEMs, with the 90m precision. I've also used the functions that allows the transformation of vector level lines in DEMs, so that I can visualize them through nviz (include in GRASS) or Paraview (own installation). To import therion datas, I export them from therion in SQL format, but it only delivers the axis points... I still didn't try the new feature (ESRI Shapefile export)...
Thierry
