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# DMStagMigrateVec
transfer a vector associated with a `DMSTAG` to a vector associated with a compatible `DMSTAG` 
## Synopsis
```
PetscErrorCode DMStagMigrateVec(DM dm, Vec vec, DM dmTo, Vec vecTo)
```
Collective


## Input Parameters

- ***dm -*** the source `DMSTAG` object
- ***vec -*** the source vector, compatible with `dm`
- ***dmTo -*** the compatible destination `DMSTAG` object
- ***vecTo -*** the destination vector, compatible with `dmTo`





## Notes
Extra dof are ignored, and unfilled dof are zeroed.
Currently only implemented to migrate global vectors to global vectors.
For the definition of compatibility of `DM`s, see `DMGetCompatibility()`.


## See Also
 [](ch_stag), `DMSTAG`, `DMStagCreateCompatibleDMStag()`, `DMGetCompatibility()`, `DMStagVecSplitToDMDA()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/stagutils.c.html#DMStagMigrateVec">src/dm/impls/stag/stagutils.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex1.c.html">src/dm/impls/stag/tutorials/ex1.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex2.c.html">src/dm/impls/stag/tutorials/ex2.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex3.c.html">src/dm/impls/stag/tutorials/ex3.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex4.c.html">src/dm/impls/stag/tutorials/ex4.c</A><BR>


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


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