typedef enum {
PETSC_VIEWER_DEFAULT,
PETSC_VIEWER_ASCII_MATLAB,
PETSC_VIEWER_ASCII_MATHEMATICA,
PETSC_VIEWER_ASCII_IMPL,
PETSC_VIEWER_ASCII_INFO,
PETSC_VIEWER_ASCII_INFO_DETAIL,
PETSC_VIEWER_ASCII_COMMON,
PETSC_VIEWER_ASCII_SYMMODU,
PETSC_VIEWER_ASCII_INDEX,
PETSC_VIEWER_ASCII_DENSE,
PETSC_VIEWER_ASCII_MATRIXMARKET,
PETSC_VIEWER_ASCII_VTK,
PETSC_VIEWER_ASCII_VTK_CELL,
PETSC_VIEWER_ASCII_VTK_COORDS,
PETSC_VIEWER_ASCII_PCICE,
PETSC_VIEWER_ASCII_PYTHON,
PETSC_VIEWER_ASCII_FACTOR_INFO,
PETSC_VIEWER_ASCII_LATEX,
PETSC_VIEWER_ASCII_XML,
PETSC_VIEWER_ASCII_GLVIS,
PETSC_VIEWER_DRAW_BASIC,
PETSC_VIEWER_DRAW_LG,
PETSC_VIEWER_DRAW_CONTOUR,
PETSC_VIEWER_DRAW_PORTS,
PETSC_VIEWER_VTK_VTS,
PETSC_VIEWER_VTK_VTR,
PETSC_VIEWER_VTK_VTU,
PETSC_VIEWER_BINARY_MATLAB,
PETSC_VIEWER_NATIVE,
PETSC_VIEWER_HDF5_VIZ,
PETSC_VIEWER_NOFORMAT,
PETSC_VIEWER_LOAD_BALANCE
} PetscViewerFormat;
The values below are also listed in petsc/finclude/petscviewer.h. If another values is added below it must also be added there.