petsc-3.7.1 2016-05-15
Report Typos and Errors

VecView

Views a vector object.

Synopsis

#include "petscvec.h"   
PetscErrorCode  VecView(Vec vec,PetscViewer viewer)
Collective on Vec Many br

Input Parameters

vec - the vector Many br
viewer - an optional visualization context Many br

Notes

The available visualization contexts include Many br
PETSC_VIEWER_STDOUT_SELF - for sequential vectors Many br
PETSC_VIEWER_STDOUT_WORLD - for parallel vectors created on PETSC_COMM_WORLD Many br
PETSC_VIEWER_STDOUT_(comm) - for parallel vectors created on MPI communicator comm Many br

You can change the format the vector is printed using the Many broption PetscViewerPushFormat(). Many br

The user can open alternative visualization contexts with Many br

PetscViewerASCIIOpen() - Outputs vector to a specified file Many br
PetscViewerBinaryOpen() - Outputs vector in binary to a Many brspecified file; corresponding input uses VecLoad() Many br
PetscViewerDrawOpen() - Outputs vector to an X window display Many br
PetscViewerSocketOpen() - Outputs vector to Socket viewer Many br

The user can call PetscViewerPushFormat() to specify the output Many brformat of ASCII printed objects (when using PETSC_VIEWER_STDOUT_SELF, Many brPETSC_VIEWER_STDOUT_WORLD and PetscViewerASCIIOpen). Available formats include Many br

PETSC_VIEWER_DEFAULT - default, prints vector contents Many br
PETSC_VIEWER_ASCII_MATLAB - prints vector contents in MATLAB format Many br
PETSC_VIEWER_ASCII_INDEX - prints vector contents, including indices of vector elements Many br
PETSC_VIEWER_ASCII_COMMON - prints vector contents, using a Many brformat common among all vector types Many br

Notes: You can pass any number of vector objects, or other PETSc objects to the same viewer. Many br

Notes for binary viewer: If you pass multiply vectors to a binary viewer you can read them back in in the same order Many br

    with VecLoad().

   If the blocksize of the vector is greater than one then you must provide a unique prefix to
   the vector with PetscObjectSetOptionsPrefix((PetscObject)vec,"uniqueprefix"); BEFORE calling VecView() on the
   vector to be stored and then set that same unique prefix on the vector that you pass to VecLoad(). The blocksize
   information is stored in an ASCII file with the same name as the binary file plus a ".info" appended to the
   filename. If you copy the binary file, make sure you copy the associated .info file with it.

Notes for HDF5 Viewer: the name of the Vec (given with PetscObjectSetName() is the name that is used Many br

   for the object in the HDF5 file. If you wish to store the same vector to the HDF5 viewer (with different values,
   obviously) several times, you must change its name each time before calling the VecView(). The name you use
   here should equal the name that you use in the Vec object that you use with VecLoad().

See the manual page for VecLoad() on the exact format the binary viewer stores Many brthe values in the file. Many br

Many br

See Also

PetscViewerASCIIOpen(), PetscViewerDrawOpen(), PetscDrawLGCreate(),
PetscViewerSocketOpen(), PetscViewerBinaryOpen(), VecLoad(), PetscViewerCreate(), Many brPetscRealView(), PetscScalarView(), PetscIntView() Many br

Level:beginner
Location:
src/vec/vec/interface/vector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/vec/vec/examples/tutorials/ex2.c.html
src/vec/vec/examples/tutorials/ex3.c.html
src/vec/vec/examples/tutorials/ex5.c.html
src/vec/vec/examples/tutorials/ex6.c.html
src/vec/vec/examples/tutorials/ex7.c.html
src/vec/vec/examples/tutorials/ex8.c.html
src/vec/vec/examples/tutorials/ex10.c.html
src/vec/vec/examples/tutorials/ex12.c.html
src/vec/vec/examples/tutorials/ex15.c.html
src/vec/vec/examples/tutorials/ex16.c.html
src/vec/vec/examples/tutorials/ex19.c.html