:orphan:
# DMPlexSectionView
Saves a section associated with a `DMPLEX` 
## Synopsis
```
#include "petscdmplex.h"   
PetscErrorCode DMPlexSectionView(DM dm, PetscViewer viewer, DM sectiondm)
```
Collective


## Input Parameters

- ***dm         -*** The `DM` that contains the topology on which the section to be saved is defined
- ***viewer     -*** The `PetscViewer` for saving
- ***sectiondm  -*** The `DM` that contains the section to be saved





## Notes
This function is a wrapper around `PetscSectionView()`; in addition to the raw section, it saves information that associates the section points to the topology (dm) points. When the topology (dm) and the section are later loaded with `DMPlexTopologyLoad()` and `DMPlexSectionLoad()`, respectively, this information is used to match section points with topology points.

In general dm and sectiondm are two different objects, the former carrying the topology and the latter carrying the section, and have been given a topology name and a section name, respectively, with `PetscObjectSetName()`. In practice, however, they can be the same object if it carries both topology and section; in that case the name of the object is used as both the topology name and the section name.


## See Also
 [](ch_unstructured), `DM`, `DMPLEX`, `DMView()`, `DMPlexTopologyView()`, `DMPlexCoordinatesView()`, `DMPlexLabelsView()`, `DMPlexGlobalVectorView()`, `DMPlexLocalVectorView()`, `PetscSectionView()`, `DMPlexSectionLoad()`, `PetscViewer`

## Level
advanced

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


---
[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)