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<TITLE>PetscViewerASCIIOpen</TITLE>
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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/PetscViewerASCIIOpen.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscViewerASCIIOpen"><H1>PetscViewerASCIIOpen</H1></A>
Opens an ASCII file as a <A HREF="../Viewer/PetscViewer.html#PetscViewer">PetscViewer</A>.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsys.h"
PetscErrorCode PetscViewerASCIIOpen(MPI_Comm comm,const char name[],PetscViewer *lab)
</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
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>name </B></TD><TD>- the file name
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>lab </B> -the <A HREF="../Viewer/PetscViewer.html#PetscViewer">PetscViewer</A> to use with the specified file
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
This <A HREF="../Viewer/PetscViewer.html#PetscViewer">PetscViewer</A> can be destroyed with <A HREF="../Viewer/PetscViewerDestroy.html#PetscViewerDestroy">PetscViewerDestroy</A>().
<P>
The MPI communicator used here must match that used by the object one is viewing. For example if the
<A HREF="../Mat/Mat.html#Mat">Mat</A> was created with a <A HREF="../Sys/PETSC_COMM_WORLD.html#PETSC_COMM_WORLD">PETSC_COMM_WORLD</A>, then the Viewer must be created with <A HREF="../Sys/PETSC_COMM_WORLD.html#PETSC_COMM_WORLD">PETSC_COMM_WORLD</A>
<P>
As shown below, <A HREF="../Viewer/PetscViewerASCIIOpen.html#PetscViewerASCIIOpen">PetscViewerASCIIOpen</A>() is useful in conjunction with
<A HREF="../Mat/MatView.html#MatView">MatView</A>() and <A HREF="../Vec/VecView.html#VecView">VecView</A>()
<PRE>
<A HREF="../Viewer/PetscViewerASCIIOpen.html#PetscViewerASCIIOpen">PetscViewerASCIIOpen</A>(<A HREF="../Sys/PETSC_COMM_WORLD.html#PETSC_COMM_WORLD">PETSC_COMM_WORLD</A>,"mat.output",&viewer);
<A HREF="../Mat/MatView.html#MatView">MatView</A>(matrix,viewer);
</PRE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatView.html#MatView">MatView</A>(), <A HREF="../Vec/VecView.html#VecView">VecView</A>(), <A HREF="../Viewer/PetscViewerDestroy.html#PetscViewerDestroy">PetscViewerDestroy</A>(), <A HREF="../Viewer/PetscViewerBinaryOpen.html#PetscViewerBinaryOpen">PetscViewerBinaryOpen</A>(),
<BR><A HREF="../Viewer/PetscViewerASCIIGetPointer.html#PetscViewerASCIIGetPointer">PetscViewerASCIIGetPointer</A>(), <A HREF="../Viewer/PetscViewerPushFormat.html#PetscViewerPushFormat">PetscViewerPushFormat</A>(), <A HREF="../Viewer/PETSC_VIEWER_STDOUT_.html#PETSC_VIEWER_STDOUT_">PETSC_VIEWER_STDOUT_</A>, <A HREF="../Viewer/PETSC_VIEWER_STDERR_.html#PETSC_VIEWER_STDERR_">PETSC_VIEWER_STDERR_</A>,
<A HREF="../Viewer/PETSC_VIEWER_STDOUT_WORLD.html#PETSC_VIEWER_STDOUT_WORLD">PETSC_VIEWER_STDOUT_WORLD</A>, <A HREF="../Viewer/PETSC_VIEWER_STDOUT_SELF.html#PETSC_VIEWER_STDOUT_SELF">PETSC_VIEWER_STDOUT_SELF</A>,
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sys/classes/viewer/impls/ascii/vcreatea.c.html#PetscViewerASCIIOpen">src/sys/classes/viewer/impls/ascii/vcreatea.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/ksp/ksp/examples/tutorials/ex4.c.html">src/ksp/ksp/examples/tutorials/ex4.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex10.c.html">src/ksp/ksp/examples/tutorials/ex10.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex54.c.html">src/ksp/ksp/examples/tutorials/ex54.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex55.c.html">src/ksp/ksp/examples/tutorials/ex55.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex56.c.html">src/ksp/ksp/examples/tutorials/ex56.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex15.c.html">src/snes/examples/tutorials/ex15.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex48.c.html">src/snes/examples/tutorials/ex48.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex70.c.html">src/snes/examples/tutorials/ex70.c.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex9.c.html">src/ts/examples/tutorials/ex9.c.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex14.c.html">src/ts/examples/tutorials/ex14.c.html</A><BR>
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