:orphan:
# DMGetField
Return the `DMLabel` and discretization object for a given `DM` field
## Synopsis
```
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMGetField(DM dm, PetscInt f, DMLabel *label, PetscObject *disc)
```
Not Collective
## Input Parameters
- ***dm -*** The `DM`
- ***f -*** The field number
## Output Parameters
- ***label -*** The label indicating the support of the field, or `NULL` for the entire mesh (pass in `NULL` if not needed)
- ***disc -*** The discretization object (pass in `NULL` if not needed)
## See Also
[](ch_dmbase), `DM`, `DMAddField()`, `DMSetField()`
## Level
intermediate
## Location
src/dm/interface/dm.c
## Examples
src/snes/tutorials/ex56.c
src/snes/tutorials/ex62.c
src/snes/tutorials/ex63.c
src/snes/tutorials/ex69.c
src/snes/tutorials/ex77.c
src/ts/tutorials/ex46.c
src/ts/tutorials/ex76.c
src/ts/tutorials/ex77.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)