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


## InputParameters

- ***sym       -*** the section symmetries
- ***stratum   -*** the stratum value in the label that we are assigning symmetries for
- ***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))
- ***mode      -*** how sym should copy the perms and rots arrays
- ***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
 `PetscSectionSymLabelGetStratum()`, `PetscSectionSymCreate()`, `PetscSectionSetSym()`, `PetscSectionGetPointSyms()`, `PetscSectionSymCreateLabel()`

## Level
developer

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

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/tutorials/ex6.c.html">src/dm/impls/plex/tutorials/ex6.c.html</A><BR>


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


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