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# PetscViewerSetFormat
Sets the format for a `PetscViewer`. 
## Synopsis
```
#include "petscsys.h" 
PetscErrorCode PetscViewerSetFormat(PetscViewer viewer, PetscViewerFormat format)
```
Logically Collective

This routine is deprecated, you should use `PetscViewerPushFormat()`/`PetscViewerPopFormat()`


## Input Parameters

- ***viewer -*** the `PetscViewer`
- ***format -*** the format





## Note
See `PetscViewerFormat` for available values


## See Also
 [](sec_viewers), `PetscViewerGetFormat()`, `PetscViewerASCIIOpen()`, `PetscViewerBinaryOpen()`, `MatView()`, `VecView()`, `PetscViewerType`,
`PetscViewerPushFormat()`, `PetscViewerPopFormat()`, `PetscViewerDrawOpen()`, `PetscViewerSocketOpen()`

## Level
deprecated

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/interface/viewa.c.html#PetscViewerSetFormat">src/sys/classes/viewer/interface/viewa.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/viewer/interface/viewa.c)


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