:orphan:
# DMPlexCreateOverlapMigrationSF
Create a `PetscSF` describing the new mesh distribution to make the overlap described by the input `PetscSF` 
## Synopsis
```
#include "petscdmplex.h"   
#include "petscdmlabel.h"  
PetscErrorCode DMPlexCreateOverlapMigrationSF(DM dm, PetscSF overlapSF, PetscSF *migrationSF)
```
Collective


## Input Parameters

- ***dm          -*** The `DM`
- ***overlapSF   -*** The `PetscSF` mapping ghost points in overlap to owner points on other processes



## Output Parameter

- ***migrationSF -*** A `PetscSF` that maps original points in old locations to points in new locations





## See Also
 `DMPLEX`, `DMPlexCreateOverlapLabel()`, `DMPlexDistributeOverlap()`, `DMPlexDistribute()`

## Level
developer

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


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