PETSc version 3.17.4
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# DMPlexMarkBoundaryFaces

Mark all faces on the boundary

### Synopsis

    #include "petscdmplex.h"
    #include "petscdmlabel.h"
    PetscErrorCode DMPlexMarkBoundaryFaces(DM dm, PetscInt val, DMLabel label)

Not Collective

### Input Parameters

| dm | - The original DM
| val | - The marker value, or PETSC_DETERMINE to use some value in the closure (or 1 if none are found)

### Output Parameter

| label | - The DMLabel marking boundary faces with the given value

### See Also

DMLabelCreate(), DMCreateLabel()

### Level

developer

### Location

src/dm/impls/plex/plexsubmesh.c

### Examples

src/snes/tutorials/ex12.c.html
src/snes/tutorials/ex56.c.html
src/snes/tutorials/ex77.c.html
src/tao/tutorials/ex3.c.html

### Implementations

DMPlexMarkBoundaryFaces_Internal in src/dm/impls/plex/plexsubmesh.c
Index of all DMPLEX routines
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Index of all manual pages