petsc-3.12.4 2020-02-04
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# DMGetDimPoints

Get the half-open interval for all points of a given dimension

### Synopsis

    #include "petscdm.h"
    #include "petscdmlabel.h"
    #include "petscds.h"
    PetscErrorCode DMGetDimPoints(DM dm, PetscInt dim, PetscInt *pStart, PetscInt *pEnd)

Collective on dm

### Input Parameters

| dm | - the DM
| dim | - the dimension

### Output Parameters

| pStart | - The first point of the given dimension
| pEnd | - The first point following points of the given dimension

### Note

The points are vertices in the Hasse diagram encoding the topology. This is explained in https://arxiv.org/abs/0908.4427. If no points exist of this dimension in the storage scheme, then the interval is empty.

### See Also

DMPLEX, DMPlexGetDepthStratum(), DMPlexGetHeightStratum()

### Level

intermediate

### Location

src/dm/interface/dm.c

### Implementations

DMGetDimPoints_DA in src/dm/impls/da/dacreate.c
DMGetDimPoints_pforest in src/dm/impls/forest/p4est/pforest.c
DMGetDimPoints_Plex in src/dm/impls/plex/plexcreate.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages