:orphan:
# DMView
Views a `DM`. Depending on the `PetscViewer` and its `PetscViewerFormat` it may print some ASCII information about the `DM` to the screen or a file or save the `DM` in a binary file to be loaded later or create a visualization of the `DM`
## Synopsis
```
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMView(DM dm, PetscViewer v)
```
Collective
## Input Parameters
- ***dm -*** the `DM` object to view
- ***v -*** the viewer
## Notes
Using `PETSCVIEWERHDF5` type with `PETSC_VIEWER_HDF5_PETSC` as the `PetscViewerFormat` one can save multiple `DMPLEX`
meshes in a single HDF5 file. This in turn requires one to name the `DMPLEX` object with `PetscObjectSetName()`
before saving it with `DMView()` and before loading it with `DMLoad()` for identification of the mesh object.
## See Also
[](ch_dmbase), `DM`, `PetscViewer`, `PetscViewerFormat`, `PetscViewerSetFormat()`, `DMDestroy()`, `DMCreateGlobalVector()`, `DMCreateInterpolation()`, `DMCreateColoring()`, `DMCreateMatrix()`, `DMCreateMassMatrix()`, `DMLoad()`, `PetscObjectSetName()`
## Level
beginner
## Location
src/dm/interface/dm.c
## Examples
src/dm/impls/plex/tutorials/ex3f90.F90
src/dm/impls/plex/tutorials/ex5.c
src/dm/tutorials/ex1.c
src/dm/tutorials/ex14.c
src/dm/tutorials/ex19.c
src/dm/tutorials/ex20.c
src/dm/tutorials/ex21.c
src/dm/tutorials/ex5.c
src/dm/tutorials/swarm_ex1.c
src/dm/tutorials/swarm_ex2.c
src/dm/tutorials/swarm_ex3.c
## Implementations
DMView_Composite in src/dm/impls/composite/pack.c
DMView_pforest in src/dm/impls/forest/p4est/pforest.h
DMView_Moab in src/dm/impls/moab/dmmoab.cxx
DMView_Network in src/dm/impls/network/networkview.c
DMView_Patch in src/dm/impls/patch/patch.c
DMView_PlexCGNS in src/dm/impls/plex/cgns/plexcgns2.c
DMView_Plex in src/dm/impls/plex/plex.c
DMView_PlexExodusII in src/dm/impls/plex/plexexodusii.c
DMView_Redundant in src/dm/impls/redundant/dmredundant.c
DMView_Shell in src/dm/impls/shell/dmshell.c
DMView_Stag in src/dm/impls/stag/stag.c
DMView_Swarm in src/dm/impls/swarm/swarm.c
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/interface/dm.c)
[Index of all DM routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)