[GRASSLIST:4276] Re: "Draping" vectors on raster maps

[Ben Logan]

On Sun, Aug 11, 2002 at 02:03:32PM +0200, Andrew Wade wrote:
> Hi all
> I'm trying to do something in grass I haven't had to before - taking a 
> vector map (a vehicle's route incidentally) and draping it over the 
> topography of the area to show more visually where the vehicle 
> travelled.  What would I use to do this?

I believe that nviz is the tool you are looking for.  You can plot a
3D view of the topography, and then drape the vector map of the roads
over that.  To play around, try something like

GRASS: ~> nviz elev

(replace 'elev' with the name of your elevation map).

> Also, what is the command to make animations along a path 
> again?

This can also be done from within nviz.  Take a look at
$GISBASE/documents/nviz/nviz_tut.html (from within Grass--the path is
correct for my installation of Grass 5pre4) for a tutorial on nviz.

HTH,
Ben

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Ben Logan: ben at wblogan dot net
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