:orphan:
# DMForestSetAdjacencyCodimension
Like `DMForestSetAdjacencyDimension()`, but specified as a co-dimension (so that, e.g., adjacency based on facets can be specified by codimension 1 in all cases) 
## Synopsis
```
#include "petscdmforest.h" 
#include "petscdm.h" 
#include "petscdmlabel.h" 
PetscErrorCode DMForestSetAdjacencyCodimension(DM dm, PetscInt adjCodim)
```
Logically Collective


## Input Parameters

- ***dm -*** the forest
- ***adjCodim -*** default is the dimension of the forest (see `DMGetDimension()`), since this is the codimension of vertices





## See Also
 `DM`, `DMFOREST`, `DMForestGetAdjacencyCodimension()`, `DMForestSetAdjacencyDimension()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/forest/forest.c.html#DMForestSetAdjacencyCodimension">src/dm/impls/forest/forest.c</A>


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


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