Dear Jean-Paul and Wolfgang,
Thank you for your answers. *> I think that the BlockMatrixArray <https://www.dealii.org/8.4.1/doxygen/deal.II/classBlockMatrixArray.html> class might offer the functionality that you're looking for?* The class BlockMatrixArray is almost what I need, but there is still a hurdle. If I follow step-22, then I should have in my code a line that is analogous to the one that appears there: A_preconditioner->initialize <http://dealii.org/developer/doxygen/deal.II/classSparseILU.html#ae4b56dfaab3fd8820faa1b21160b1acb> (system_matrix.block(0,0), typename InnerPreconditioner<dim>::type::AdditionalData()); Note that the type of the first argument of the function “initialize” is: const SparseMatrix< somenumber > & However, in my case, the natural class of the argument that is available to me is BlockMatrixArray that is not derived from SparseMatrix. It is not clear to me how to overcome this issue. Is there a way to transform a BlockMatrixArray object (which is composed of 2*2 SparseMatrix objects) to a SparseMatrix object? I would be happy to know if you have any suggestions. Best, Oded -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
