:orphan:
# DMFieldGetDegree
Get the polynomial degree of a field when pulled back onto the reference element
## Synopsis
```
#include "petscdmfield.h"
#include "petscdmfield.h"
PetscErrorCode DMFieldGetDegree(DMField field, IS cellIS, PetscInt *minDegree, PetscInt *maxDegree)
```
Not Collective
## Input Parameters
- ***field -*** the `DMField` object
- ***cellIS -*** the index set of points over which we want know the invariance
## Output Parameters
- ***minDegree -*** the degree of the largest polynomial space contained in the field on each element
- ***maxDegree -*** the largest degree of the smallest polynomial space containing the field on any element
## See Also
`DMField`, `IS`, `DMFieldEvaluateFE()`
## Level
intermediate
## Location
src/dm/field/interface/dmfield.c
## Implementations
DMFieldGetDegree_DA in src/dm/field/impls/da/dmfieldda.c
DMFieldGetDegree_DS in src/dm/field/impls/ds/dmfieldds.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/field/interface/dmfield.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)