# MatSeqAIJSetType
Converts a `MATSEQAIJ` matrix to a subtype 
## Synopsis
```
#include "petscmat.h" 
PetscErrorCode MatSeqAIJSetType(Mat mat, MatType matype)
```
Collective on mat


## Input Parameters

- ***mat      -*** the matrix object
- ***matype   -*** matrix type



## Options Database Key

- ***-mat_seqai_type  <method> -*** for example seqaijcrl





## See Also
 `PCSetType()`, `VecSetType()`, `MatCreate()`, `MatType`, `Mat`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/aij/seq/aij.c.html#MatSeqAIJSetType">src/mat/impls/aij/seq/aij.c</A>


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


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