[GRASS-user] 3D TIN?

[Carlos "Guâno" Grohmann]

Does the map you created with v.delaunay have 3D info? or is it a 2D
triangulation of your 3D points?

Carlos




On 7/9/07, sm399 at cam.ac.uk <sm399 at cam.ac.uk> wrote:
> Dear Carlos and all,
>
> I tried the export via shapefile too, as I do actually have Autocad Map.
> The problem remains the same. For some reason (or actually, probably the
> same reason highlighted my Markus in previous correspondance) the v.out
> even in this case does not transfer 3D info.
>
> I really need to work in 3D to edit these TINS and create a 3D geometry to
> then import in GRASS and Paraview. Can anybody assist? I am basically
> trying to create 3D irregular volumes from points to represent
> archaeological features.
>
> Yours,
> stefania
>
> --On 08 July 2007 11:28 +0100 "Carlos \"Guâno\" Grohmann"
> <carlos.grohmann at gmail.com> wrote:
>
> > Stefania,
> > do you really need to work with dxf files?  Are you using AutoCAD or
> > other CAD software? AutoCAD MAP can import shapefiles.
> > if you really need dxf, you can try to export as shapefile and then
> > convert it.
> > there are some converters around, like:
> >
> > http://www.globalmapper.com/
> > http://www.guthcad.com/arcv2cad.htm
> > http://www.mass.gov/mgis/dxf.htm
> >
> > these are Windows programs, though.
> >
> > good luck
> >
> > Carlos
> >
> > On 7/8/07, sm399 at cam.ac.uk <sm399 at cam.ac.uk> wrote:
> >> Thank you Markus for the clarification.
> >>
> >> Is there anybody out there that could assist the support for 3D face? I
> >> cannot program...
> >>
> >> stefania
> >>
> >> --On 07 July 2007 10:57 -0700 Markus Neteler <neteler at itc.it> wrote:
> >>
> >> >
> >> >
> >> > Stefania Merlo wrote:
> >> >>
> >> >> Dear GRASS users,
> >> >>
> >> >> I have a question about exporting TINs to dxf. I have successfully
> >> >> managed  to perform the export and opened the TIN files created with
> >> >> v.delaunay in  CAD. Problem is, the z value of the TIN points is 0 and
> >> >> my TIN is flat (not
> >> >> what I wanted to achieve). Am I doing something wrong or is this what
> >> >> should happen? Is there a command that would allow the export of 3D
> >> >> TINs?  Is this an export problem only or is the command v.delaunay not
> >> >> producing a
> >> >> 3D file?
> >> >>
> >> >> Hope my problem is clearly stated. Any suggestions on how to create
> >> >> and export a 3D TIN for further editing in software external to GRASS
> >> >> is welcome!
> >> >>
> >> >> Yours
> >> >>
> >> >> stefania merlo
> >> >>
> >> >> University of Cambridge
> >> >> UK
> >> >>
> >> >
> >> > Hi Stefania,
> >> >
> >> > I checked v.out.dxf and found that no 3DFACE support is there. This
> >> > needs to be added; I think it would be the inverse of
> >> > vector/v.in.dxf/add_3dface.c
> >> >
> >> > Markus
> >> > --
> >> > View this message in context:
> >> > http://www.nabble.com/3D-TIN--tf4040787.html#a11480693 Sent from the
> >> > Grass - Users mailing list archive at Nabble.com.
> >> >
> >> > _______________________________________________
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> >>
> >>
> >>
> >>
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> >
> >
> > --
> > +-----------------------------------------------------------+
> >               Carlos Henrique Grohmann - Guano
> >   Visiting Researcher at Kingston University London - UK
> >   Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
> > Linux User #89721  - carlos dot grohmann at gmail dot com
> > +-----------------------------------------------------------+
> > _________________
> > "Good morning, doctors. I have taken the liberty of removing Windows
> > 95 from my hard drive."
> > --The winning entry in a "What were HAL's first words" contest judged
> > by 2001: A SPACE ODYSSEY creator Arthur C. Clarke
> >
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>
>
>
>
>


-- 
+-----------------------------------------------------------+
              Carlos Henrique Grohmann - Guano
  Visiting Researcher at Kingston University London - UK
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
_________________
"Good morning, doctors. I have taken the liberty of removing Windows
95 from my hard drive."
--The winning entry in a "What were HAL's first words" contest judged
by 2001: A SPACE ODYSSEY creator Arthur C. Clarke