# MatHtoolCompressorType
Indicates the type of compressor used by a `MATHTOOL` 
## Synopsis
```
typedef enum {
  MAT_HTOOL_COMPRESSOR_SYMPARTIAL_ACA,
  MAT_HTOOL_COMPRESSOR_FULL_ACA,
  MAT_HTOOL_COMPRESSOR_SVD
} MatHtoolCompressorType;
```



## Values

- ***`MAT_HTOOL_COMPRESSOR_SYMPARTIAL_ACA` (default) -*** symmetric partial adaptive cross approximation
- ***`MAT_HTOOL_COMPRESSOR_FULL_ACA` -*** full adaptive cross approximation
- ***`MAT_HTOOL_COMPRESSOR_SVD` -*** singular value decomposition



## See Also
 `MatCreateHtoolFromKernel()`, `MATHTOOL`, `MatHtoolClusteringType`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscmat.h.html#MatHtoolCompressorType">include/petscmat.h</A>


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