On 7/16/23 07:22, Abbas Ballout wrote:
I get this error when I call the exact_solution_vector_function.gradient(p1):
!ERROR Message:
/An error occurred in line <135> of file
</home/abbas/dealii-candi/deal-II/dealii/include/deal.II/base/function.templates.h> in function
dealii::Tensor<1, dim, Number> dealii::Function<dim,
RangeNumberType>::gradient(const dealii::Point<dim>&, unsigned int) const
[with int dim = 2; RangeNumberType = double]
The violated condition was:
false
Additional information:
You (or a place in the library) are trying to call a function that is
declared as a virtual function in a base class but that has not been
overridden in your derived class./
/
/
Calling value works fine but not gradient even though I have overridden both
functions.
You do in your own class, but VectorFunctionFromTensorFunction does not.
That's not by design, but probably simply because nobody has ever had a need
for this. Would you like to try and write a patch that adds
VectorFunctionFromTensorFunction::gradient()? You could model it on
VectorFunctionFromTensorFunction::value().
Best
Wolfgang
--
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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