Am Mittwoch, 27. März 2019 13:58:47 UTC+1 schrieb Daniel Arndt:
>
> Gabriel,
>
> Am Mittwoch, 27. März 2019 06:16:18 UTC-4 schrieb Gabriel Peters:
>>
>> Hey, I just worked through the make_sparsity_pattern code.
>> I think I know how to fix the mentioned problem. But I dont understand the
>> how to use the "bool_dof_mask" in the correct way. It is used in he
>> constraints.add_entries_local_to_global(...)
>> function.
>> In the make_sparsity_pattern function with a single dof_handler and a
>> constraintmatrix, it is constructed by a fe_collection.
>> But I don't see how to construct the bool_dof_mask with 2 dof_handlers
>> and respectively 2 fe_collections.
>> Do you have a clue?
>>
>
> "bool_dof_mask" is only used in case the make_*_pattern has a `const
> Table<2, Coupling> & couplings` parameter. That is currently not the case
> for the function you are looking at.
> For being backward-compatible we need to provide/keep the
>
> void DoFTools::make_sparsity_pattern ( const DoFHandlerType & dof_row,
> const
> DoFHandlerType & dof_col,
>
> SparsityPatternType & sparsity )
>
> interface anyway, it is fine to add defaulted parameters at the end, but
> adding `const Table<2, Coupling> & couplings` as third parameter would
> not.
> For now, I would simply assume that all components couple and ignore the
> last argument for add_entries_local_to_global. We can always create another
> overload later if specifying the coupling is desired/necessary.
>
> Best,
> Daniel
>
Hey, its me again.
Today I had various tries fixing the upper problem.
At first I extended the make_sparsity_pattern function to
void DoFTools::make_sparsity_pattern ( const DoFHandlerType & dof_row,
const
DoFHandlerType & dof_col,
SparsityPatternType & sparsity,
const
ConstraintMatrix &constraints,
const
bool keep_constrained_dofs)
and also changed the dof_tools.h file in deal.II\source\dofs and changed
the adding function;
but when I compiled this I got lots of errors of this kind:
error:* template-id*
‘make_sparsity_pattern<dealii::hp::DoFHandler<1, 3>,
dealii::BlockDynamicSparsityPattern>’ for ‘void
dealii::DoFTools::make_sparsity_pattern(const dealii::hp::DoFHandler<1,
3>&, const dealii::hp::DoFHandler<1, 3>&,
dealii::BlockDynamicSparsityPattern&)’ *does not match any template
declaration*
My second attempt was to make a new function, with a different name, which
takes the same arguments as above and does exactly was the classical
make_sp_pt(row_id,col_id,sparsity) function does, up to the
constraints.add... function.
I also added the header of these function to the dof_tools.h file.
This compiled fine, but when I used this function in my program I got the
error:
undefined reference to: (function parameters).
Could you maybe tel me what I did wrong, or did I do an fundamental error
at editting the deal.ii code?
Thanks a lot again and sorry for the long message
Gabriel
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