# PetscViewerVTKOpen
Opens a `PETSCVIEWERVTK` viewer file. 
## Synopsis
```
#include "petscviewer.h" 
PetscErrorCode PetscViewerVTKOpen(MPI_Comm comm, const char name[], PetscFileMode type, PetscViewer *vtk)
```
Collective


## Input Parameters

- ***comm -*** MPI communicator
- ***name -*** name of file
- ***type -*** type of file


```none
`FILE_MODE_WRITE` - create new file for binary output
```
```none
`FILE_MODE_READ` - open existing file for binary input (not currently supported)
```
```none
`FILE_MODE_APPEND` - open existing file for binary output (not currently supported)
```


## Output Parameter

- ***vtk -*** `PetscViewer` for VTK input/output to use with the specified file





## See Also
 `PETSCVIEWERVTK`, `PetscViewerASCIIOpen()`, `PetscViewerPushFormat()`, `PetscViewerDestroy()`,
`VecView()`, `MatView()`, `VecLoad()`, `MatLoad()`,
`PetscFileMode`, `PetscViewer`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/impls/vtk/vtkv.c.html#PetscViewerVTKOpen">src/sys/classes/viewer/impls/vtk/vtkv.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex4.c.html">src/dm/impls/stag/tutorials/ex4.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex6.c.html">src/dm/impls/stag/tutorials/ex6.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex42.c.html">src/ksp/ksp/tutorials/ex42.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex15.c.html">src/snes/tutorials/ex15.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex16.c.html">src/snes/tutorials/ex16.c.html</A><BR>


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


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