:orphan:
# DMSetField
Set the discretization object for a given `DM` field. Usually one would call `DMAddField()` which automatically handles the field numbering.
## Synopsis
```
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMSetField(DM dm, PetscInt f, DMLabel label, PetscObject disc)
```
Logically Collective
## Input Parameters
- ***dm -*** The `DM`
- ***f -*** The field number
- ***label -*** The label indicating the support of the field, or `NULL` for the entire mesh
- ***disc -*** The discretization object
## See Also
[](ch_dmbase), `DM`, `DMAddField()`, `DMGetField()`
## Level
intermediate
## Location
src/dm/interface/dm.c
## Examples
src/dm/dt/dualspace/impls/lagrange/tutorials/ex2.c
src/dm/field/tutorials/ex1.c
src/dm/impls/swarm/tutorials/ex1.c
src/dm/impls/swarm/tutorials/ex1f90.F90
src/snes/tutorials/ex12.c
src/snes/tutorials/ex13.c
src/snes/tutorials/ex17.c
src/snes/tutorials/ex20.c
src/snes/tutorials/ex23.c
src/snes/tutorials/ex24.c
src/snes/tutorials/ex26.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)