Subtract scalar on different slices

[rcarneiro (Rui Carneiro)]

Hello everyone,

I would like to know if, in Paraview, is possible to subtract the temperature of 2 slices that are at different heights in the same computational domain?
The result would be a matrix with the result of the subtraction …

In the attached file you can see an example.

[mwestphal (Mathieu Westphal (Kitware))]

Hi @rcarneiro

If you input is a structured grid, then your two slices should contains the same number of points and cells.

Then computing anything between the two slides would be trivial using PythonCalculator filter.

[rcarneiro (Rui Carneiro)]

Something like this? My question now is, how do I refer to the temperature of the slice 1 and slice 2 in the python calculator? Note that the data array name is the same (TEMPERATURE).

Thank you.

[mwestphal (Mathieu Westphal (Kitware))]

inputs[0].PointData["TEMPERATURE"] - inputs[1].PointData["TEMPERATURE"]

[Andy_Bauer]

Are quotes needed around TEMPERATURE ?

[mwestphal (Mathieu Westphal (Kitware))]

edited

[rcarneiro (Rui Carneiro)]

Yes,quotes are needed.
And if you are working with cell data use: CellData[“TEMPERATURE”]