DMPlexCreateSection#

Create a PetscSection based upon the dof layout specification provided.

Synopsis#

#include "petscdmplex.h"   
PetscErrorCode DMPlexCreateSection(DM dm, DMLabel label[], const PetscInt numComp[], const PetscInt numDof[], PetscInt numBC, const PetscInt bcField[], const IS bcComps[], const IS bcPoints[], IS perm, PetscSection *section)

Not Collective

Input Parameters#

dm - The DMPLEX object
label - The label indicating the mesh support of each field, or NULL for the whole mesh
numComp - An array of size numFields that holds the number of components for each field
numDof - An array of size numFields*(dim+1) which holds the number of dof for each field on a mesh piece of dimension d
numBC - The number of boundary conditions
bcField - An array of size numBC giving the field number for each boundary condition
bcComps - [Optional] An array of size numBC giving an IS holding the field components to which each boundary condition applies
bcPoints - An array of size numBC giving an IS holding the DMPLEX points to which each boundary condition applies
perm - Optional permutation of the chart, or NULL

Output Parameter#

section - The PetscSection object

Notes#

numDof[f*(dim+1)+d] gives the number of dof for field f on points of dimension d. For instance, numDof[1] is the number of dof for field 0 on each edge.

The chart permutation is the same one set using PetscSectionSetPermutation()