:orphan:
# MatPartitioningSetAdjacency
Sets the adjacency graph (matrix) of the thing to be partitioned. 
## Synopsis
```
#include "petscmat.h" 
PetscErrorCode MatPartitioningSetAdjacency(MatPartitioning part, Mat adj)
```
Collective


## Input Parameters

- ***part -*** the partitioning context
- ***adj -*** the adjacency matrix, this can be any `MatType` but the natural representation is `MATMPIADJ`





## See Also
 [](ch_matrices), `Mat`, `MatPartitioning`, `MatPartitioningType`, `MatPartitioningCreate()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/partition/partition.c.html#MatPartitioningSetAdjacency">src/mat/partition/partition.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex64.c.html">src/ksp/ksp/tutorials/ex64.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/tutorials/ex11.c.html">src/mat/tutorials/ex11.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/tutorials/ex15.c.html">src/mat/tutorials/ex15.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/tutorials/ex15f.F90.html">src/mat/tutorials/ex15f.F90</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/tutorials/ex17.c.html">src/mat/tutorials/ex17.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/tutorials/ex17f.F90.html">src/mat/tutorials/ex17f.F90</A><BR>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/partition/partition.c)


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