:orphan:
# MatCoarsenGetData
Gets the weights for vertices for a coarsener. 
## Synopsis
```
#include "petscmatcoarsen.h" 
PetscErrorCode MatCoarsenGetData(MatCoarsen coarser, PetscCoarsenData **llist)
```
Logically Collective


## Input Parameter

- ***coarser -*** the coarsen context



## Output Parameter

- ***llist -*** linked list of aggregates





## See Also
 `MatCoarsen`, `MatCoarsenApply()`, `MatCoarsenCreate()`, `MatCoarsenSetType()`

## Level
advanced

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


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


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