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# DMStagRestoreProductCoordinateArrays
restore local array access
## Synopsis
```
PetscErrorCode DMStagRestoreProductCoordinateArrays(DM dm, void *arrX, void *arrY, void *arrZ)
```
Logically Collective
## Input Parameter
- ***dm -*** the `DMSTAG` object
## Output Parameters
- ***arrX -*** local 1D coordinate arrays for x direction
- ***arrY -*** local 1D coordinate arrays for y direction
- ***arrZ -*** local 1D coordinate arrays for z direction
## Notes
This function does not automatically perform a local->global scatter to populate global coordinates from the local coordinates.
## Thus, it may be required to explicitly perform these operations in some situations, as in the following partial example
```
PetscCall(DMGetCoordinateDM(dm,&cdm));
for (d=0; d<3; ++d) {
DM subdm;
Vec coor,coor_local;
PetscCall(DMProductGetDM(cdm,d,&subdm));
PetscCall(DMGetCoordinates(subdm,&coor));
PetscCall(DMGetCoordinatesLocal(subdm,&coor_local));
PetscCall(DMLocalToGlobal(subdm,coor_local,INSERT_VALUES,coor));
PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Coordinates dim %" PetscInt_FMT ":\n",d));
PetscCall(VecView(coor,PETSC_VIEWER_STDOUT_WORLD));
}
```
## See Also
[](ch_stag), `DMSTAG`, `DMStagGetProductCoordinateArrays()`, `DMStagGetProductCoordinateArraysRead()`
## Level
intermediate
## Location
src/dm/impls/stag/stagutils.c
## Examples
src/dm/impls/stag/tutorials/ex6.c
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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)