[GRASS-user] Volumes of intersections

[G. Allegri]

I don't know the latest devlopments on the 3d vector system, but I
would convert the vector to rasters (2d or 3d) and then use map
algebra...

giovanni

2009/1/3 Adam Dershowitz <adershowitz at exponent.com>:
> Is it possible to use grass to calculate the volume of a part of a 3-D
> vector object?
> What I mean is if I have a mountain, for example, that is defines in one
> vector map.  Then, in another map, I define an area (a plane for example).
>  This represents a slice through the mountain.
> Is it possible to calculate the volume of the mountain that lies above the
> second plane?  (how much rock is above the slice through it?) It seems like
> it should be doable, but I am not really sure how to get going.
> Any suggestions?
>
> Thanks,
>
> --Adam
>
>
>
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