Hello,
I am trying to add refinement to step-21 as suggested in the possibilities for
extensions section. I have done this using the KellyErrorEstimator. However,
I am getting the following error:
An error occurred in line <373> of file
</auto/users/katleo/deal.II/include/deal.II/grid/tria_iterator.templates.h> in
function
dealii::TriaActiveIterator<Accessor>::TriaActiveIterator(const
dealii::TriaIterator<Accessor>&) [with Accessor =
dealii::DoFCellAccessor<dealii::DoFHandler<2, 2> >]
The violated condition was:
this->accessor.has_children()==false
The name and call sequence of the exception was:
ExcAssignmentOfInactiveObject()
and I don't understand why! Any help would be greatly appreciated.
Many thanks,
K Leonard
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