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?)
Many thanks
Bill
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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.
Mark
On May 22, 2009, at 8:01 PM, william told <billtold@hotmail.com> 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?)
Many thanks
Bill
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<image.png>
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On Friday 22 May 2009, william told 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?) Many thanks
Bill
Hi,
Looks like some kind of thematic map, draped over an elevation surface, with a
vector representation of a river system on the right-side.
This is not at all difficult to do in GRASS, you just need some data first. Do
you have
1. thematic data in raster / vector format?
2. data sufficient to generate an elevation surface, or a DEM?
3. hydrologic data in raster / vector format?
Once you have these things, all in the same coordinate system- planar if
possible, bring them into a grass mapset (see the manual). You can generate
perspectives like the attached image with a tool called 'nviz'. Here is an
example, using a DEM, aerial photo, and 3D tree objects (see the GRASS
add-ons page):
http://169.237.35.250/~dylan/temp/pinn_trees_rnd.jpg
Cheers,
Dylan
--
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341