[GRASSLIST:10042] slices from a volume

GRASS GRASS user
1

Hello List!
I would like to ask about volume visualization again.
We have a 3d data set about pollution concentration. I managed to import
it, and after 3d interpolation, I managed to visualize it in nviz. Now
we would like to create slices from this volume along at given plane,
but I can't find out how to do this.

If anyone has done this before, please tell us how.

Thank you for your help in advance,
Istvan Stefan

2

Hi Stefan,
you can use r3.cross.rast available at
http://www-pool.math.tu-berlin.de/~soeren/grass/modules/
to create cut planes. In the description is a small
example how to create a plane and how to cut
the 3d volume.

If you want to visualize cut planes, try out the r3.out.vtk module in
combination with Paraview (www.paraview.org). The module r3.out.vtk
and some other programms for volumen processing are also available
at
http://www-pool.math.tu-berlin.de/~soeren/grass/modules/

Some of these Modules are already in gass-6.1-cvs.(r3.cross.rast is not in
cvs yet)
If you are using a different
version of GRASS, you have to compile those modules at your own risk ;). I
didnt tested them
with older GRASS versions then 6.1.

The modules at my hompeage are still in development and have beta status,
so if you want to use them, you will become an official betatester :).

If you have questions, please ask.
Any suggestions or comments about the modules are very welcome!

Best regards
Soeren

--- Ursprüngliche Nachricht ---
Von: Stefan Istvan <stefi@geohidroterv.hu>
An: GRASS Users list <grasslist@baylor.edu>
Betreff: [GRASSLIST:10042] slices from a volume
Datum: Mon, 30 Jan 2006 14:58:39 +0100

Hello List!
I would like to ask about volume visualization again.
We have a 3d data set about pollution concentration. I managed to import
it, and after 3d interpolation, I managed to visualize it in nviz. Now
we would like to create slices from this volume along at given plane,
but I can't find out how to do this.

If anyone has done this before, please tell us how.

Thank you for your help in advance,
Istvan Stefan

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