:orphan:
# DMPlexGetDepthStratum
Get the bounds [`start`, `end`) for all points at a certain depth. 
## Synopsis
```
#include "petscdmplex.h"   
PetscErrorCode DMPlexGetDepthStratum(DM dm, PetscInt depth, PetscInt *start, PetscInt *end)
```
Not Collective


## Input Parameters

- ***dm    -*** The `DMPLEX` object
- ***depth -*** The requested depth



## Output Parameters

- ***start -*** The first point at this `depth`
- ***end   -*** One beyond the last point at this `depth`





## Notes
Depth indexing is related to topological dimension.  Depth stratum 0 contains the lowest topological dimension points,
often "vertices".  If the mesh is "interpolated" (see `DMPlexInterpolate()`), then depth stratum 1 contains the next
higher dimension, e.g., "edges".


## See Also
 [](ch_unstructured), `DM`, `DMPLEX`, `DMPlexGetHeightStratum()`, `DMPlexGetDepth()`, `DMPlexGetDepthLabel()`, `DMPlexGetPointDepth()`, `DMPlexSymmetrize()`, `DMPlexInterpolate()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/plex.c.html#DMPlexGetDepthStratum">src/dm/impls/plex/plex.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/tutorials/ex11.c.html">src/dm/impls/plex/tutorials/ex11.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/tutorials/ex7.c.html">src/dm/impls/plex/tutorials/ex7.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex13.c.html">src/snes/tutorials/ex13.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex17.c.html">src/snes/tutorials/ex17.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex7.c.html">src/snes/tutorials/ex7.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex11.c.html">src/ts/tutorials/ex11.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex11_sa.c.html">src/ts/tutorials/ex11_sa.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/impls/plex/plex.c)


[Index of all DMPlex routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)