Pseudoinverse to enable evaluate() at Boundary #879
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Consider a FieldFEFunction defined only at a boundary of the domain. A user may need to calculate the FieldFEFunction at an arbitrary point using
evaluate().At the moment, this results in a dimension mismatch error, because it requires the inversion of a rectangular matrix.
Please see "test/GridapTests/issue_879.jl"
The proposed edits resolves the error using pseudoinverse for the rectangular matrix, thus enabling the calculation of a FieldFEFunction at an arbitrary point using
evaluate().