# PetscSectionGetClosureIndex
Get the cache of points in the closure of each point in the section set with `PetscSectionSetClosureIndex()` 
## Synopsis
```
#include "petscsection.h"   
PetscErrorCode PetscSectionGetClosureIndex(PetscSection section, PetscObject obj, PetscSection *clSection, IS *clPoints)
```
Collective


## Input Parameters

- ***section   -*** The `PetscSection`
- ***obj       -*** A `PetscObject` which serves as the key for this index



## Output Parameters

- ***clSection -*** `PetscSection` giving the size of the closure of each point
- ***clPoints  -*** `IS` giving the points in each closure





## See Also
 [PetscSection](sec_petscsection), `PetscSectionSetClosureIndex()`, `DMPlexCreateClosureIndex()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/section/interface/section.c.html#PetscSectionGetClosureIndex">src/vec/is/section/interface/section.c</A>


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