[Paraview] Plot cumulative integral over time of a variable

[Scott, W Alan]

Question from a user:

I would like to use paraview to do the following:

1)      Integrate a nodal variable over a volume (IntegrateVariables filter does this)

2)      Then, integrate the result of the volume integral over time (cumulative integral)

The "IntegrateVariables" filter works just fine to integrate over the volume, and I can plot the results of it over time by selecting "RowData" from the "PlotSelectionOverTime" filter.  I just can't figure out how to do #2 - integrate these results over time with something like "numpy.trapz" or "scipy.integrate.cumtrapz".

I feel like this has probably been asked a million times, but I still seem to have trouble with it.  I think I usually fall back to other post processing tools.  Can this be done all in Paraview?



Thanks,

Alan


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