:orphan:
# MatCoarsenViewFromOptions
View the coarsener from the options database 
## Synopsis
```
#include "petscmatcoarsen.h" 
PetscErrorCode MatCoarsenViewFromOptions(MatCoarsen A, PetscObject obj, const char name[])
```
Collective


## Input Parameters

- ***A -*** the coarsen context
- ***obj -*** Optional object that provides the prefix for the option name
- ***name -*** command line option (usually `-mat_coarsen_view`)



## Options Database Key

- ***-mat_coarsen_view [viewertype]:... -*** the viewer and its options



## Note
```none
    If no value is provided ascii:stdout is used
       ascii[:[filename][:[format][:append]]]    defaults to stdout - format can be one of ascii_info, ascii_info_detail, or ascii_matlab,
                                                  for example ascii::ascii_info prints just the information about the object not all details
                                                  unless :append is given filename opens in write mode, overwriting what was already there
       binary[:[filename][:[format][:append]]]   defaults to the file binaryoutput
       draw[:drawtype[:filename]]                for example, draw:tikz, draw:tikz:figure.tex  or draw:x
       socket[:port]                             defaults to the standard output port
       saws[:communicatorname]                    publishes object to the Scientific Application Webserver (SAWs)
```





## See Also
 `MatCoarsen`, `MatCoarsenView`, `PetscObjectViewFromOptions()`, `MatCoarsenCreate()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/coarsen/coarsen.c.html#MatCoarsenViewFromOptions">src/mat/coarsen/coarsen.c</A>


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


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