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# DMPlexTopologyView
Saves a `DMPLEX` topology into a file 
## Synopsis
```
#include "petscdmplex.h"   
PetscErrorCode DMPlexTopologyView(DM dm, PetscViewer viewer)
```
Collective


## Input Parameters

- ***dm     -*** The `DM` whose topology is to be saved
- ***viewer -*** The `PetscViewer` to save it in





## See Also
 [](ch_unstructured), `DM`, `DMPLEX`, `DMView()`, `DMPlexCoordinatesView()`, `DMPlexLabelsView()`, `DMPlexTopologyLoad()`, `PetscViewer`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/plex.c.html#DMPlexTopologyView">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](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)