:orphan:
# DMForestGetAdjacencyCodimension
Like `DMForestGetAdjacencyDimension()`, 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 DMForestGetAdjacencyCodimension(DM dm, PetscInt *adjCodim)
```
Not Collective


## Input Parameter

- ***dm -*** the forest



## Output Parameter

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





## See Also
 `DM`, `DMFOREST`, `DMForestSetAdjacencyCodimension()`, `DMForestGetAdjacencyDimension()`

## Level
intermediate

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


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[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)