PetscViewerASCIIOpen

Synopsis

#include "petscviewer.h"   
PetscErrorCode  PetscViewerASCIIOpen(MPI_Comm comm,const char name[],PetscViewer *lab)

Input Parameters

Output Parameter

Notes

    PetscViewerCreate(comm,&lab);

    PetscViewerSetType(lab,PETSCVIEWERASCII);

    PetscViewerFileSetMode(lab,FILE_MODE_READ);

    PetscViewerFileSetName(lab,name);

This PetscViewer can be destroyed with PetscViewerDestroy().

The MPI communicator used here must match that used by the object one is viewing. For example if the Mat was created with a PETSC_COMM_WORLD, then the Viewer must be created with PETSC_COMM_WORLD

As shown below, PetscViewerASCIIOpen() is useful in conjunction with MatView() and VecView()

     PetscViewerASCIIOpen(PETSC_COMM_WORLD,"mat.output",&viewer);
     MatView(matrix,viewer);

See Also

Level

Location

Examples