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# DMPlexCreateCoarsePointIS
Creates an `IS` covering the coarse `DM` chart with the fine points as data 
## Synopsis
```
#include "petscdmplex.h"   
PetscErrorCode DMPlexCreateCoarsePointIS(DM dm, IS *fpointIS)
```
Collective


## Input Parameter

- ***dm -*** The coarse `DM`



## Output Parameter

- ***fpointIS -*** The `IS` of all the fine points which exist in the original coarse mesh





## See Also
 [](ch_unstructured), `DM`, `DMPLEX`, `IS`, `DMRefine()`, `DMPlexSetRefinementUniform()`, `DMPlexGetSubpointIS()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/plexrefine.c.html#DMPlexCreateCoarsePointIS">src/dm/impls/plex/plexrefine.c</A>


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


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