[STATSGRASS] 3D geostatistics

[javier garcia - CEBAS]

Hi,

I've got gstat and I know that it is possible to use sites file of GRASS, 
with x, y, and z coordinates. But  what is the best way to work with 3D data?
I would like to know if someone has used 3D data in GRASS and has 
interpolated these results to produce output maps. 
Some time ago I used GSTAT to produce 2D gaussian simulations and the output 
was writen in GRASS, but I can't imagine how to do this with 3D. Perhaps is 
it possible to produce a stack of raster maps? If so, how do I specify the 
vertical resolution of output (distance between maps)? Is this possible?

Perhaps it is better to use the GRASS Grid 3D Modules. But these are not 
compiled by default. Do they work right yet? Is it possible to use GSTAT to 
produce Grid3D maps?

If the way is

As you can see, I'm lost in this. I just would like to receive an advice 
about these topics.

Thanks and best wishes

Javier
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