# PetscSectionSymLabelGetStratum
get the symmetries for the orientations of a stratum 
## Synopsis
```
#include "petscdmlabel.h"   
#include "petscsection.h"   
PetscErrorCode PetscSectionSymLabelGetStratum(PetscSectionSym sym, PetscInt stratum, PetscInt *size, PetscInt *minOrient, PetscInt *maxOrient, const PetscInt ***perms, const PetscScalar ***rots)
```
Logically collective on sym


## Input Parameters

- ***sym       -*** the section symmetries
- ***stratum   -*** the stratum value in the label that we are assigning symmetries for



## Output Parameters

- ***size      -*** the number of dofs for points in the stratum of the label
- ***minOrient -*** the smallest orientation for a point in this stratum
- ***maxOrient -*** one greater than the largest orientation for a ppoint in this stratum (i.e., orientations are in the range [minOrient, maxOrient))
- ***perms     -*** NULL if there are no permutations, or (maxOrient - minOrient) permutations, one for each orientation.  A NULL permutation is the identity
- ***rots      -*** NULL if there are no rotations, or (maxOrient - minOrient) sets of rotations, one for each orientation.  A NULL set of orientations is the identity





## See Also
 `PetscSectionSymLabelSetStratum()`, `PetscSectionSymCreate()`, `PetscSectionSetSym()`, `PetscSectionGetPointSyms()`, `PetscSectionSymCreateLabel()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/label/dmlabel.c.html#PetscSectionSymLabelGetStratum">src/dm/label/dmlabel.c</A>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/label/dmlabel.c)


[Index of all DMLabel routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
