Hi all,
I am having a little problem with projecting a function onto (parts of) FE
spaces. I am getting the error
The violated condition was:
(dynamic_cast<const parallel::Triangulation<dim> *>(
&(dof.get_triangulation())) == nullptr)
Additional information:
You are trying to use functionality in deal.II that is currently not
implemented. In many cases, this indicates that there simply didn't appear
much of a need for
it, or that the author of the original code did not have the time to
implement a particular case. If you hit this exception, it is therefore
worth the time to look int
o the code to find out whether you may be able to implement the missing
functionality. If you do, please consider providing a patch to the deal.II
development sources
(see the deal.II website on how to contribute).
I of course get what this error message suggests and I am wondering if I
could fix this somehow. The funny thing is that when I step through the
code in debug mode I see that exactly the cast above fails. Funnily, the
cast dynamic_cast<const parallel::Triangulation<dim,dim> *>(
&(dof.get_triangulation())) works.
Now I am asking myself why? Am I missing something here?
Best regards,
Konrad
This is my function:
{
TrilinosWrappers::MPI::BlockVector locally_relevant_exact_solution;
locally_relevant_exact_solution.reinit(owned_partitioning,
mpi_communicator);
{ // write sigma to Nedelec_0 space
// Quadrature used for projection
QGauss<3> quad_rule (3);
// Setup function
ExactSolutionLin_A_curl exact_sigma(parameter_filename); // Exact solution
for first FE ---> Nedelec FE
DoFHandler<3> dof_handler_fake (triangulation);
dof_handler_fake.distribute_dofs (fe.base_element(0));
if (parameters.renumber_dofs)
{
DoFRenumbering::Cuthill_McKee (dof_handler_fake);
}
AffineConstraints<double> constraints_fake;
constraints_fake.clear ();
DoFTools::make_hanging_node_constraints (dof_handler_fake,
constraints_fake);
constraints_fake.close();
VectorTools::project (dof_handler_fake,
constraints_fake,
quad_rule,
exact_sigma,
locally_relevant_exact_solution.block(0));
dof_handler_fake.clear ();
}
{// write u to Raviart-Thomas_0 space
// Quadrature used for projection
QGauss<3> quad_rule (3);
// Setup function
ExactSolutionLin exact_u(parameter_filename); // Exact solution for second
FE ---> Raviart-Thomas FE
DoFHandler<3> dof_handler_fake (triangulation);
dof_handler_fake.distribute_dofs (fe.base_element(1));
if (parameters.renumber_dofs)
{
DoFRenumbering::Cuthill_McKee (dof_handler_fake);
}
AffineConstraints<double> constraints_fake;
constraints_fake.clear ();
DoFTools::make_hanging_node_constraints (dof_handler_fake,
constraints_fake);
constraints_fake.close();
VectorTools::project (dof_handler_fake,
constraints_fake,
quad_rule,
exact_u,
locally_relevant_exact_solution.block(1));
dof_handler_fake.clear ();
}
}
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