[Gmsh] Compute a product or a linear combinaison of scalar fields in GMSH

[Jean-Philippe Sellin]

Dear all,

I'll like to manipulate with GMSH scalar fields calculated by means of
Code_Aster. These fields are typically the principal stresses of a
mechanical problem. I would like to calculate for example a linear
combinaison of these fields or their product. I tried to use the Matheval
plugging but, unfortunately, I did not success. Is it possible to compute
linear combinaison of scalar fields and in that case, how?
With my kind regards,

Jean-Phi
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