# MatFactorGetPreferredOrdering
The preferred ordering for a particular matrix factor object 
## Synopsis
```
#include "petscmat.h" 
PetscErrorCode MatFactorGetPreferredOrdering(Mat mat, MatFactorType ftype, MatOrderingType *otype)
```
Logically Collective


## Input Parameters

- ***mat -*** the matrix obtained with `MatGetFactor()`



## Output Parameters

- ***otype -*** the preferred type





## See Also
 `Mat`, [Matrix Factorization](sec_matfactor), `MatFactorType`, `MatOrderingType`, `MatCopy()`, `MatDuplicate()`, `MatGetFactorAvailable()`, `MatGetFactor()`, `MatLUFactorSymbolic()`, `MatCholeskyFactorSymbolic()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/interface/matrix.c.html#MatFactorGetPreferredOrdering">src/mat/interface/matrix.c</A>


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