[Paraview] Plot smooth particle data

[Timothy Charles Fagan]

Dear Paraview Community,

I have a set of particle data (.vtk polydata) that I would like to use for
a plot over a line. However I get a choppy line at best, and often very
large gaps in data.

I have tried applying the a 2D glyph and that works better, but is still
choppy. Also the Plot Data to Cell Data filter doesn't seem to help, though
I assume having cell data would create a smooth line.

I can get a better curve using the extract selection and plot data
function, but this becomes too dependent on how I select the data and I
can't do it with much accuracy.

Thanks,
Tim
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