petsc-3.7.3 2016-07-24
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# DMPlexConstructGhostCells

Construct ghost cells which connect to every boundary face

### Synopsis

    #include "petscdmplex.h"
    #include "petscdmlabel.h"
    PetscErrorCode DMPlexConstructGhostCells(DM dm, const char labelName[], PetscInt *numGhostCells, DM *dmGhosted)

Collective on dm

### Input Parameters

| dm | - The original DM
| labelName | - The label specifying the boundary faces, or "Face Sets" if this is NULL

### Output Parameters

| numGhostCells | - The number of ghost cells added to the DM
| dmGhosted | - The new DM

Note: If no label exists of that name, one will be created marking all boundary faces

### See Also

DMCreate()

Level:developer
Location: src/dm/impls/plex/plexsubmesh.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/ts/examples/tutorials/ex11.c.html