[GRASS-user] Exporting GRASS contours to AutoCAD Map3D?

[Hamish]

Florian wrote:
> you can use stereo satellite images Quickbird/IKONOS or
> even stereo oblique photographs? But this maybe also a question of
> money :-).


not as fun as do-it-yourself stereo-altimetry using your own digital
camera*, but 1 arc-second (~30m) SRTM DEMs are available in the US,
free, and pretty easy to work with. Maybe the latest USGS quads are
higher resolution?

[*] http://grass.osgeo.org/gdp/stereo-grass/index.html
    http://grass.osgeo.org/wiki/Imagery


Hamish