# DMStagCreate1d
Create an object to manage data living on the elements and vertices of a parallelized regular 1D grid. 
## Synopsis
```
PETSC_EXTERN PetscErrorCode DMStagCreate1d(MPI_Comm comm, DMBoundaryType bndx, PetscInt M, PetscInt dof0, PetscInt dof1, DMStagStencilType stencilType, PetscInt stencilWidth, const PetscInt lx[], DM *dm)
```
Collective


## Input Parameters

- ***comm -*** MPI communicator
- ***bndx -*** boundary type: `DM_BOUNDARY_NONE`, `DM_BOUNDARY_PERIODIC`, or `DM_BOUNDARY_GHOSTED`
- ***M -*** global number of elements
- ***dof0 -*** number of degrees of freedom per vertex/0-cell
- ***dof1 -*** number of degrees of freedom per element/1-cell
- ***stencilType -*** ghost/halo region type: `DMSTAG_STENCIL_BOX` or `DMSTAG_STENCIL_NONE`
- ***stencilWidth -*** width, in elements, of halo/ghost region
- ***lx -*** array of local sizes, of length equal to the comm size, summing to M



## Output Parameter

- ***dm -*** the new DMStag object



## Options Database Keys

- ***-dm_view -*** calls `DMViewFromOptions()` at the conclusion of `DMSetUp()`
- ***-stag_grid_x <nx> -*** number of elements in the x direction
- ***-stag_ghost_stencil_width -*** width of ghost region, in elements
- ***-stag_boundary_type_x <none,ghosted,periodic> -*** `DMBoundaryType` value



## Notes
You must call `DMSetUp()` after this call before using the DM.
If you wish to use the options database (see the keys above) to change values in the DMStag, you must call
`DMSetFromOptions()` after this function but before `DMSetUp()`.




## See Also
 `DMSTAG`, `DMStagCreate2d()`, `DMStagCreate3d()`, `DMDestroy()`, `DMView()`, `DMCreateGlobalVector()`, `DMCreateLocalVector()`, `DMLocalToGlobalBegin()`, `DMDACreate1d()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/stag1d.c.html#DMStagCreate1d">src/dm/impls/stag/stag1d.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.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex8.c.html">src/dm/impls/stag/tutorials/ex8.c.html</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/impls/stag/stag1d.c)


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