:orphan:
# PetscFERefine
Create a "refined" `PetscFE` object that refines the reference cell into smaller copies. This is typically used to precondition a higher order method with a lower order method on a refined mesh having the same number of dofs (but more sparsity). It is also used to create an interpolation between regularly refined meshes. 
## Synopsis
```
#include "petscfe.h" 
PetscErrorCode PetscFERefine(PetscFE fe, PetscFE *feRef)
```
Collective


## Input Parameter

- ***fe -*** The initial `PetscFE`



## Output Parameter

- ***feRef -*** The refined `PetscFE`





## See Also
 `PetscFEType`, `PetscFECreate()`, `PetscFESetType()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/dt/fe/interface/fe.c.html#PetscFERefine">src/dm/dt/fe/interface/fe.c</A>


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