[GRASS-user] Re: create 3D raster and display

[Marcello Gorini]

Janet Choate said:

>i want to display a raster in 3D. i.e. display landscape maps 'draped on
>top' of the dem so i can show the terrain in 3D rather than as a flat
image.
>
>
>do i need to convert a raster to a 3D raster via r.to.rast3 or
>r.to.rast3elev, set the region for 3D?
>how to display?

Not at all. As far as I know, r.to.rast3 is for real 3D with volume and all.

What you want is sometimes called 2.5D and is simply achieved by:

nviz elevation=dem color=landscale_map

The nviz screen should pop open and then you should be able to move your 3D
display as desired.

Regards,
Marcello.

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