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One of the great features in Simulink is how you can add blocks of custom MATLAB code that does something complex with simulation variables and outputs values as a result. I wonder if something similar is possible in SystemModeler? For example, if...
I'm looking at another way. Suppose I have the big expression `expr` with many integrals. What if I do something like this: Select[expr, MemberQ[#, S[x, y, z].S[x, y, z]] &] My problem is the above does not work unless the integrand is...