:orphan:
# DMForestSetCellWeightFactor
During the pre-setup phase, set the factor by which the level of refinement changes the cell weight (see `DMForestSetCellWeights()`) when calculating partitions.  The final weight of a cell will be (cellWeight) * (weightFactor^refinementLevel).  A factor of 1 indicates that the weight of a cell does not depend on its level; a factor of 2, for example, might be appropriate for sub-cycling time-stepping methods, when the computation associated with a cell is multiplied by a factor of 2 for each additional level of refinement. 
## Synopsis
```
#include "petscdmforest.h" 
#include "petscdm.h" 
#include "petscdmlabel.h" 
PetscErrorCode DMForestSetCellWeightFactor(DM dm, PetscReal weightsFactor)
```
Logically Collective


## Input Parameters

- ***dm -*** the forest
- ***weightsFactors -*** default 1.





## See Also
 `DM`, `DMFOREST`, `DMForestGetCellWeightFactor()`, `DMForestSetCellWeights()`

## Level
advanced

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