[GRASSLIST:8132] Re: r.profile and working in 3d?

Dylan Beaudette dylan at iici.no-ip.org
Tue Aug 30 12:32:51 EDT 2005

On Tuesday 30 August 2005 07:01 am, Phillip J. Allen wrote:
> Hi all,
> After reading the "r.profile & subsequent chart plot" threads during the
> last few days, I would like to throw in a comment.
> As a geologist/geochemist I need to make cross-sections, which r.profile
> can make.  I know that I can then take r.profile's output and create a
> new ascii-grass vector file, open it up into a new location and mapset
> and then cut up the imported cross-section polygon into it's individual
> geological units.  So now I can complete the most basic requirments of
> my job.
> But the direction that my geological job is taking is that  I need to
> take my surface geology and my  various geological cross-sections  and
> put them into a full 3-d model.  NVIZ is a very nice tool for
> visualization but the problem is how to get everything into 3d.
> I haven't tried it yet but can I import a "vertical" polygon vector file
> into grass61?  If I can, is it possible to then edit it and then draw 3d
> polylines to start to build up a 3d model and then wire-frame?
> For a while I was experimenting with a 3d modeling & animation program
> called "Blender".  It has some brilliant 3d editing capabilities but it
> can only use coordinates between +/-10000.00.  So it has limited use for
> 3d geological modeling with real-world coordinates.
> Considering the "very" high cost of 3d geological modeling software,
> grass has some real possiblity here.
> Thanks,
> Phillip J. Allen

This type of work interestes me as well. I have found in the past that POVRAY 
can do this type of work, but it does require a bit of scripting. Markus has 
helped me in the past to get GRASS data into POVRAY.


Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis

More information about the grass-user mailing list