[Paraview] fft of selection over time filter

[Scott, W Alan]

I am trying to figure out the FFT of selection over time filter.  My user is trying to use it on a velocity point vector field (in 2d, no less).  So, a few questions:
*       This filter doesn't work on point data, but only cell data.  Shouldn't it work on point data?
*       This filter doesn't create magnitudes of vectors.  Shouldn't it if needed?
*       Since an FFT spans some array of data, shouldn't this span be changeable?  For instance, 16 or 32 or 128?
*       Does this filter even work correctly?  Has anyone ever used it?
*       Can anyone create a simple example using this filter?

Thanks,


Alan



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