:orphan:
# MatCoarsenCreate
Creates a coarsen context. 
## Synopsis
```
#include "petscmatcoarsen.h" 
PetscErrorCode MatCoarsenCreate(MPI_Comm comm, MatCoarsen *newcrs)
```
Collective


## Input Parameter

- ***comm -*** MPI communicator



## Output Parameter

- ***newcrs -*** location to put the context





## See Also
 `MatCoarsen`, `MatCoarsenSetType()`, `MatCoarsenApply()`, `MatCoarsenDestroy()`,
`MatCoarsenSetAdjacency()`, `MatCoarsenGetData()`


## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/coarsen/coarsen.c.html#MatCoarsenCreate">src/mat/coarsen/coarsen.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/coarsen/impls/hem/hem.c.html#MatCoarsenCreate_HEM">MatCoarsenCreate_HEM in src/mat/coarsen/impls/hem/hem.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/coarsen/impls/mis/mis.c.html#MatCoarsenCreate_MIS">MatCoarsenCreate_MIS in src/mat/coarsen/impls/mis/mis.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/coarsen/impls/misk/misk.c.html#MatCoarsenCreate_MISK">MatCoarsenCreate_MISK in src/mat/coarsen/impls/misk/misk.c</A><BR>


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


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