Dear NGSolve community,
i recently tried to use MatrixValued H1 FE-functions via
MatrixValued(H1(Th, order=1), dim=2, symmetric=True, deviatoric=False)
However when I tried computing gradients of elements in this space I got the following error
netgen.libngpy._meshing.NgException: Operator “grad” does not exist for SymMatrixH1HighOrderFESpace!
For the non-symmetric space everthing works fine. Is this intented that symmetric Matrix-FE-function do not have gradients?
Thanks for any hints or help in advance,
Aaron