DMCreateSectionSubDM#

Returns an IS and subDM containing a PetscSection that encapsulates a subproblem defined by a subset of the fields in a PetscSection in the DM.

Synopsis#

#include "petscdm.h"     
PetscErrorCode DMCreateSectionSubDM(DM dm, PetscInt numFields, const PetscInt fields[], IS *is, DM *subdm)

Not Collective

Input Parameters#

  • dm - The DM object

  • numFields - The number of fields to incorporate into subdm

  • fields - The field numbers of the selected fields

Output Parameters#

  • is - The global indices for the subproblem or NULL

  • subdm - The DM for the subproblem, which must already have be cloned from dm or NULL

Note#

If is and subdm are both NULL this does nothing

See Also#

DMCreateSubDM(), DMGetLocalSection(), DMPlexSetMigrationSF(), DMView()

Level#

intermediate

Location#

src/dm/interface/dmi.c

Index of all DM routines
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Index of all manual pages