:orphan:
# 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
FILE_MODE_READ - open existing file for binary input (not currently supported)
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
[](sec_viewers), `PETSCVIEWERVTK`, `PetscViewerASCIIOpen()`, `PetscViewerPushFormat()`, `PetscViewerDestroy()`,
`VecView()`, `MatView()`, `VecLoad()`, `MatLoad()`,
`PetscFileMode`, `PetscViewer`
## Level
beginner
## Location
src/sys/classes/viewer/impls/vtk/vtkv.c
## Examples
src/dm/impls/stag/tutorials/ex4.c
src/dm/impls/stag/tutorials/ex6.c
src/ksp/ksp/tutorials/ex42.c
src/snes/tutorials/ex15.c
src/snes/tutorials/ex16.c
---
[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](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)