Fwd: [vtk-developers] About constructing a 3D geographical surface

[Soeren Gebbert]

Hi John,
just an idea. If you have geographical data which you want to visualize with
vtk
than try the combination of the gis grass and paraview. There are many
options
in grass to get your x,y,z ascii data into it. You can process the data
there and export it with the grass module r.out.vtk into the vtk format to
visualize
the data with paraview, visit or mayavi.

Or you can build in java a poly dataset with x,y,z point coordinates
connected with triangles to
each other and store the resistivity values in an point data double array.
If you have
an ordered point set the triangulation should be no problem.
AFAIC you have to import the data with your own program. There is no
x,y,z,value import module in vtk. But im not sure.

Best regards
soeren

Link to grass:
grass.itc.it

Link to some grass/vtk modules and related stuff:
www-pool.math.tu-berlin.de/~soeren/grass/modules<http://www-pool.math.tu-berlin.de/%7Esoeren/grass/modules>

2007/10/11, John Ownsoul <mongwarrior at yahoo.com>:
>
>
> Dear Fellows;
>
> I have some data about a geographical surface, and i want to show an image
> in VTK (with Java).
> But i am a beginner, so i don't know the syntax very well. I practice with
> VTK, but i don't know the file operations. Could you help me to construct
> the file and show the image in vtk??
>
> I use these datas at the below:
>
> x(m)   y(m)   z(m)    resistivity value(ohm.m)
> 2        1    -1,406           204,934
> 3        1    -1,406           108,021
> 4        1    -1,406             62,275
> 5        1    -1,406             47,608
>                     ...
>
>
> Thanks for everything...
>
> --
> View this message in context:
> http://www.nabble.com/About-constructing-a-3D-geographical-surface-tf4605431.html#a13150408
> Sent from the VTK - Dev mailing list archive at Nabble.com.
>
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