# DMPlexSymmetrize
Create support (out-edge) information from cone (in-edge) information 
## Synopsis
```
#include "petscdmplex.h"   
PetscErrorCode DMPlexSymmetrize(DM dm)
```
Not Collective


## Input Parameter

- ***mesh -*** The `DMPLEX`





## Note
This should be called after all calls to `DMPlexSetCone()`


## See Also
 [](chapter_unstructured), `DM`, `DMPLEX`, `DMPlexCreate()`, `DMPlexSetChart()`, `DMPlexSetConeSize()`, `DMPlexSetCone()`

## Level
beginner

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


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


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