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

[Dylan Beaudette]

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


-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341