[GRASS-user] (no subject)
hamish_nospam at yahoo.com
Sun Feb 11 21:05:59 EST 2007
Amaginary Studios wrote:
> I am wondering how it is possible to create 2.5D NVIZ map from a 20m
> interval contour line shapefile that has the elevation information as
> an attribute.
> I'm new to using GRASS for such things.
> I'll keep reading, but most of the information is about .dem files.
GRASS was historically mainly a raster based GIS, only with GRASS 6.0
did we gain a powerful vector engine. Thus many of the modules and
documentation deal with digital elevation models in gridded raster form.
Keeping in that tradition: convert your vector contour file to a raster
v.to.rast use=attr column=elevation out=contour_map
r.surf.contour in=contour_map out=dem_map
see the individual help pages for more info.
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