# DMLabelGetBounds
Return the smallest and largest point in the label 
## Synopsis
```
#include "petscdmlabel.h"   
#include "petscsection.h"   
PetscErrorCode DMLabelGetBounds(DMLabel label, PetscInt *pStart, PetscInt *pEnd)
```
Not collective


## Input Parameter

- ***label -*** the DMLabel



## Output Parameters

- ***pStart -*** The smallest point
- ***pEnd   -*** The largest point + 1


Note: This will compute an index for the label if one does not exist.




## See Also
 `DMLabelHasPoint()`, `DMLabelCreateIndex()`, `DMLabelGetValue()`, `DMLabelSetValue()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/label/dmlabel.c.html#DMLabelGetBounds">src/dm/label/dmlabel.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/label/tutorials/ex1.c.html">src/dm/label/tutorials/ex1.c.html</A><BR>


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


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