Dear Firedrakers,
I would like to inspect the values of my Jacobian matrix derived from my form F. I did a
J=derivative(F,u)
print assemble(J).M
But this did not result in the actual values (see below for output). Can I somehow obtain the actual values?
Thank you!
Henrik
Output of print assemble(J).M
OP2 Mat: None_None_None_None_matrix, sparsity (OP2 Sparsity: dsets (MixedDataSet((DataSet(ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), (1,), 'None_nodes_dset'), DataSet(ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), (1,), 'None_nodes_dset'))), MixedDataSet((DataSet(ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), (1,), 'None_nodes_dset'), DataSet(ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), (1,), 'None_nodes_dset')))), rmaps (MixedMap((DecoratedMap(Map(ExtrudedSet(Set((0, 0, 0, 0), 'plexmesh_interior_facets'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 2, None, 'None_interior_facet_node'), frozenset(['ALL']), frozenset([]), None), DecoratedMap(Map(ExtrudedSet(Set((0, 0, 0, 0), 'plexmesh_interior_facets'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 2, None, 'None_interior_facet_node'), frozenset(['ALL']), frozenset([]), None))), MixedMap((DecoratedMap(Map(ExtrudedSet(Set((1, 1, 1, 1), 'plexmesh_cells'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 1, None, 'None_cell_node'), frozenset(['ALL', 'ON_INTERIOR_FACETS']), frozenset([]), None), DecoratedMap(Map(ExtrudedSet(Set((1, 1, 1, 1), 'plexmesh_cells'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 1, None, 'None_cell_node'), frozenset(['ALL', 'ON_INTERIOR_FACETS']), frozenset([]), None)))), cmaps (MixedMap((DecoratedMap(Map(ExtrudedSet(Set((0, 0, 0, 0), 'plexmesh_interior_facets'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 2, None, 'None_interior_facet_node'), frozenset(['ALL']), frozenset([]), None), DecoratedMap(Map(ExtrudedSet(Set((0, 0, 0, 0), 'plexmesh_interior_facets'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 2, None, 'None_interior_facet_node'), frozenset(['ALL']), frozenset([]), None))), MixedMap((DecoratedMap(Map(ExtrudedSet(Set((1, 1, 1, 1), 'plexmesh_cells'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 1, None, 'None_cell_node'), frozenset(['ALL', 'ON_INTERIOR_FACETS']), frozenset([]), None), DecoratedMap(Map(ExtrudedSet(Set((1, 1, 1, 1), 'plexmesh_cells'), 5), ExtrudedSet(Set((4, 4, 4, 4), 'None_nodes'), 5), 1, None, 'None_cell_node'), frozenset(['ALL', 'ON_INTERIOR_FACETS']), frozenset([]), None)))), name None_None_None_None_sparsity), datatype float64
--
Dipl.-Math. Henrik Büsing
Institute for Applied Geophysics and Geothermal Energy
E.ON Energy Research Center
RWTH Aachen University
------------------------------------------------------
Mathieustr. 10 | Tel +49 (0)241 80 49907
52074 Aachen, Germany | Fax +49 (0)241 80 49889
------------------------------------------------------
------------------------------------------------------