[Paraview] save filter result

[Zenker, Dr. Matthias]

Hi,

I want to visualize the gradient of a potential, calculated in 3D, on a slice, with some coputours. My workflow is:


*         Open dataset (vtu),

*         apply "gradient of unstructured dataset" filter,

*         apply calculator to compute the magnitude of the gradient,

*         apply slice filter,

*         apply contour filter.
Since it takes some time to calculate gradient, magnitude and extract the slice, I would like to save the result in a file so that I can open it instantaneously later. How do I do that? If I just use "save data", ParaView saves all the data, including the initial potential values, which gives a huge file. Is there a way to just save the result of the calculator, or better, of the slice filter?
I have tried with the extract selection filter, but I seem not to manage to extract the results I want. How can I do that?

Thanks for a hint,

Matthias
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