[Paraview] VTK File Format Question

[Jeff Johnson]

Thanks, but I'm totally new to the VTK file format and ParaView, and the documentation is not clear. It seems like the STRUCTURED_GRID geometry is the proper one for what I need, but I can find virtually no examples of it's use. For instance, if I want to specify a set of unit cubes from a set of points, do I do that in POINT_DATA or CELL_DATA? If I want to color them and set an opacity, where does that information go? The documentation says that a lookup table is a set of RGBA values that is associated with scalar data, but what does the scalar data represent, and how do I associated it with the cubes?

-Jeff


On Dec 12, 2010, at 03:27 , Sebastien Jourdain wrote:

> Hi Jeff,
> 
> on the help page of vtk (http://www.vtk.org/VTK/help/documentation.html)
> you do have a link on the VTK file format.
> You should be able to find all the informations that you need here:
> http://www.vtk.org/VTK/img/file-formats.pdf
> 
> Seb
> 
> On Sat, Dec 11, 2010 at 8:44 PM, Jeff Johnson <jj56 at indiana.edu> wrote:
>> Hi all,
>> 
>> I'm using ParaView to visualize a dataset, and I'm trying to generate an ASCII VTK file that will specify a set of voxels, where each voxel has an associated color and opacity. Does anyone have any suggestions for how I should format the file? It seems like this should be easy, but I can't make heads or tails of the documentation.
>> 
>> -Jeff
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