Hello All, I am interested in computing the second derivatives of a vector-valued finite element, using FEValuesExtractors. My compiler says that this function is not implemented in FEValuesViews::Vector<http://www.dealii.org/developer/doxygen/deal.II/classFEValuesViews_1_1Vector.html>, and I looked and saw that only the get_function_hessians for scalar finite elements is implemented.
I was wondering if there is a reason that there is no equivalent function to get_function_hessians<http://www.dealii.org/developer/doxygen/deal.II/classFEValuesBase.html#ab702294a61d3ede128e959764a67f624>from FEValuesBase, or if it just needs to be created, or perhaps I am misunderstanding how FEValueViews works. Thank you for your assistance, -Jason Sheldon PS: Thank you for the advice concerning FESystems, from my previous query. I was able to implement the suggestions.
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