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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.7.5 v3.7.5 docs/manualpages/Viewer/PetscOptionsGetViewer.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscOptionsGetViewer"><H1>PetscOptionsGetViewer</H1></A>
Gets a viewer appropriate for the type indicated by the user
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscviewer.h"
PetscErrorCode PetscOptionsGetViewer(MPI_Comm comm,const char pre[],const char name[],PetscViewer *viewer,PetscViewerFormat *format,PetscBool *set)
</PRE>
Collective on <A HREF="../Sys/MPI_Comm.html#MPI_Comm">MPI_Comm</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>comm </B></TD><TD>- the communicator to own the viewer
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>pre </B></TD><TD>- the string to prepend to the name or NULL
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>name </B></TD><TD>- the option one is seeking
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>viewer </B></TD><TD>- the viewer, pass NULL if not needed
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>format </B></TD><TD>- the <A HREF="../Viewer/PetscViewerFormat.html#PetscViewerFormat">PetscViewerFormat</A> requested by the user, pass NULL if not needed
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>set </B></TD><TD>- <A HREF="../Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> if found, else <A HREF="../Sys/PETSC_FALSE.html#PETSC_FALSE">PETSC_FALSE</A>
</TD></TR></TABLE>
<P>
<P>
Notes: If no value is provided ascii:stdout is used
<pre>
ascii[:[filename][:[format][:append]]] defaults to stdout - format can be one of ascii_info, ascii_info_detail, or ascii_matlab,
</pre>
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
<pre>
binary[:[filename][:[format][:append]]] defaults to the file binaryoutput
</pre>
<pre>
draw[:drawtype] for example, draw:tikz or draw:x
</pre>
<pre>
socket[:port] defaults to the standard output port
</pre>
<pre>
saws[:communicatorname] publishes object to the Scientific Application Webserver (SAWs)
</pre>
<P>
Use <A HREF="../Viewer/PetscViewerDestroy.html#PetscViewerDestroy">PetscViewerDestroy</A>() after using the viewer, otherwise a memory leak will occur
<P>
If PETSc is configured with --with-viewfromoptions=0 this function always returns with *set of <A HREF="../Sys/PETSC_FALSE.html#PETSC_FALSE">PETSC_FALSE</A>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Sys/PetscOptionsGetReal.html#PetscOptionsGetReal">PetscOptionsGetReal</A>(), <A HREF="../Sys/PetscOptionsHasName.html#PetscOptionsHasName">PetscOptionsHasName</A>(), <A HREF="../Sys/PetscOptionsGetString.html#PetscOptionsGetString">PetscOptionsGetString</A>(),
<BR><A HREF="../Sys/PetscOptionsGetIntArray.html#PetscOptionsGetIntArray">PetscOptionsGetIntArray</A>(), <A HREF="../Sys/PetscOptionsGetRealArray.html#PetscOptionsGetRealArray">PetscOptionsGetRealArray</A>(), <A HREF="../Sys/PetscOptionsBool.html#PetscOptionsBool">PetscOptionsBool</A>()
<A HREF="../Sys/PetscOptionsInt.html#PetscOptionsInt">PetscOptionsInt</A>(), <A HREF="../Sys/PetscOptionsString.html#PetscOptionsString">PetscOptionsString</A>(), <A HREF="../Sys/PetscOptionsReal.html#PetscOptionsReal">PetscOptionsReal</A>(), <A HREF="../Sys/PetscOptionsBool.html#PetscOptionsBool">PetscOptionsBool</A>(),
<A HREF="../Sys/PetscOptionsName.html#PetscOptionsName">PetscOptionsName</A>(), <A HREF="../Sys/PetscOptionsBegin.html#PetscOptionsBegin">PetscOptionsBegin</A>(), <A HREF="../Sys/PetscOptionsEnd.html#PetscOptionsEnd">PetscOptionsEnd</A>(), <A HREF="../Sys/PetscOptionsHead.html#PetscOptionsHead">PetscOptionsHead</A>(),
<A HREF="../Sys/PetscOptionsStringArray.html#PetscOptionsStringArray">PetscOptionsStringArray</A>(),<A HREF="../Sys/PetscOptionsRealArray.html#PetscOptionsRealArray">PetscOptionsRealArray</A>(), <A HREF="../Sys/PetscOptionsScalar.html#PetscOptionsScalar">PetscOptionsScalar</A>(),
<A HREF="../Sys/PetscOptionsBoolGroupBegin.html#PetscOptionsBoolGroupBegin">PetscOptionsBoolGroupBegin</A>(), <A HREF="../Sys/PetscOptionsBoolGroup.html#PetscOptionsBoolGroup">PetscOptionsBoolGroup</A>(), <A HREF="../Sys/PetscOptionsBoolGroupEnd.html#PetscOptionsBoolGroupEnd">PetscOptionsBoolGroupEnd</A>(),
<A HREF="../Sys/PetscOptionsFList.html#PetscOptionsFList">PetscOptionsFList</A>(), <A HREF="../Sys/PetscOptionsEList.html#PetscOptionsEList">PetscOptionsEList</A>()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sys/classes/viewer/interface/viewreg.c.html#PetscOptionsGetViewer">src/sys/classes/viewer/interface/viewreg.c</A>
<BR><A HREF="./index.html">Index of all Viewer routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/sys/classes/viewer/examples/tutorials/ex2.c.html">src/sys/classes/viewer/examples/tutorials/ex2.c.html</A><BR>
<A HREF="../../../src/sys/examples/tutorials/ex15.c.html">src/sys/examples/tutorials/ex15.c.html</A><BR>
<A HREF="../../../src/dm/impls/forest/examples/tutorials/ex1.c.html">src/dm/impls/forest/examples/tutorials/ex1.c.html</A><BR>
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