ISViewFromOptions

View an IS based on options in the options database

Synopsis

#include "petscis.h" 
PetscErrorCode ISViewFromOptions(IS A, PetscObject obj, const char name[])

Collective

Input Parameters

• A - the index set

• obj - optional object that provides the prefix for the options database, pass NULL to use the options prefix of A

• name - command line option

Options Database Key

• -name viewer_specification - See PetscOptionsCreateViewer() for the values of viewer_specification

Note

This checks the options database, creates the viewer on-the-fly, uses it and then destroys it. Hence it should not be called in heavily used routines, rather PetscOptionsCreateViewer() should be used to construct the viewer once which can then be utilized in the heavily used routine.

See Also

IS, ISView(), PetscObjectViewFromOptions(), ISCreate(), PetscOptionsCreateViewer()

Level

intermediate

Location

src/vec/is/is/interface/index.c

Examples

src/vec/vec/utils/tagger/tutorials/ex1.c
src/ts/tutorials/ex30.c
src/snes/tutorials/ex13.c
src/snes/tutorials/ex27.c

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Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages