[vtkusers] vtkPolyData to vtkStructuredGrid

[Shriram N]

Hi all,

I have a bunch of random points in 3D with associated scalar and vector
values. I have managed to create a vtk polydata
file from the data. Here's a link to a sample file in case any of you would
like to have a look.
http://acm.cs.uic.edu/~shriram/259200.vtk

I am able to draw glyphs and hedgehogs using this dataset. In order to be
able to draw iso-surfaces and streamlines, I
understand that we need a structured grid. Is there something in vtk to
convert polydata to a structured grid? I have looked
at vtkShepardMethod and vtkInterpolatedVelocityField. Shepard method returns
vtkImageData (which I can use to draw
iso surfaces but not streamlines since the vector values are missing) and I
can't seem to get vtkInterpolatedVelocityField
to work correctly.

Any help would be greatly appreciated.

Thanks,
Shriram
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