[vtkusers] Voxelize a point cloud (vtkVoxelModeller?)

[Bill Lorensen]

I think this is a bug in the writer. The scalar data type is VTK_BIT.
I'm, guessing the writer can't handle this type.

I changed the scalar type to short in my local copy of vtk and the
program ran without warnings. However, I still could not read the file
in paraview. But I changed the writer to a vtkDataSetWriter and it ran
without warning. In this case, when the type was short, I was able to
see the voxels. As VTK_BIT I could not.

VTK_BIT is not a well-supported type.

Question: Do you have a need for this filter or are you just marching
through the vtk filters to learn vtk (which is OK by the way)?

The only example I saw using this filter used its output into
vtkContourFilter, producing a Polydata.

Bill


On Sun, Nov 1, 2009 at 8:59 AM, David Doria <daviddoria+vtk at gmail.com> wrote:
> On Sun, Nov 1, 2009 at 8:25 AM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
>>
>> I think it only voxelizes cells. You probably need to create a Vertex
>> cell for each point.
>
> Hm, SpherePoints.vtp (http://rpi.edu/~doriad/VTK_List/vtkVoxelModeller/) has
> a vertex cell for each point. I am creating the vtkVoxelModeller with the
> output of the XMLPolyDataReader on that file, so there should be cells
> already.
>
> Thanks,
>
> David
>
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