#include "petscviewer.h" PetscErrorCode PetscOptionsGetViewer(MPI_Comm comm,const char pre[],const char name[],PetscViewer *viewer,PetscViewerFormat *format,PetscBool *set)Collective on MPI_Comm
| comm | - the communicator to own the viewer | |
| pre | - the string to prepend to the name or NULL | |
| name | - the option one is seeking | 
| viewer | - the viewer, pass NULL if not needed | |
| format | - the PetscViewerFormat requested by the user, pass NULL if not needed | |
| set | - PETSC_TRUE if found, else PETSC_FALSE | 
Notes: If no value is provided ascii:stdout is used
      ascii[:[filename][:[format][:append]]]    defaults to stdout - format can be one of ascii_info, ascii_info_detail, or ascii_matlab, 
for example ascii::ascii_info prints just the information about the object not all details
unless :append is given filename opens in write mode, overwriting what was already there
      binary[:[filename][:[format][:append]]]   defaults to the file binaryoutput
      draw[:drawtype]                           for example, draw:tikz  or draw:x
      socket[:port]                             defaults to the standard output port
      saws[:communicatorname]                    publishes object to the Scientific Application Webserver (SAWs)
Use PetscViewerDestroy() after using the viewer, otherwise a memory leak will occur
If PETSc is configured with --with-viewfromoptions=0 this function always returns with *set of PETSC_FALSE
Level:intermediate
Location:src/sys/classes/viewer/interface/viewreg.c
Index of all Viewer routines
Table of Contents for all manual pages
Index of all manual pages