[Paraview] Add values from 2 files and number of points in a Slice

[|Phi>]

Hi everyone,

I am trying to add scalar values from two different .vtk files with the same
geometry: I have two files giving me the potential in each node and I would
like to add these potentials. I was trying to use the calculator, but I can
just manage to treat each file at a time. Any ideas?

Another thing I was wondering if it could be done is increasing the number
of points in the spreadsheet View when we make a Slice. I am trying to get
some points on a circle and so I perform two slices of my volume: first a
spherical slice and then a planar slice, but when I try to see it in the
Spreadsheet View (so that I can export the points) only get 50 points. This
is not enough for a plot I pretend to do and so I would like to increase the
resolution. For example having a sphere with with more points when I do the
slice.

Thanks,

best regards,
Nuno
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