Bill wrote:
Hi, the attached 3D image I believe was generated by
software. I was wondering is someone could tell me if there
is a way to create something similar with GRASS,
out of shapefiles (or do I need something more, like an
aerial photo?)
Mark wrote:
It looks like a relief map.
Done by building a DEM and adding shadded relief, or
draping an aerial over the DEM. NVIZ in GRASS has some
neat stuff.
right; i.e. either with:
r.shaded.relief + d.shadedmap for two raster maps
(e.g. DEM and satellite image), or opacity overlay in GUIs
or
r.shaded.relief + multiple d.vect overlays (shapefiles)
using opacity slider in the GUIs. (or convert vector maps
to raster with v.to.rast then with d.shadedmap as above.
or
nviz elevation=dem color=satellite_image
you can use r.in.wms or more simply the r.in.onearth module
from wiki addons to pull in e.g. LANDSAT imagery from NASA.
some of the examples here give command scripts:
http://grass.osgeo.org/screenshots/raster.php
http://grass.osgeo.org/screenshots/viz.php
Hamish