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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/PetscSF/PetscSFGetGraph.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscSFGetGraph"><H1>PetscSFGetGraph</H1></A>
Get the graph specifying a parallel star forest
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsf.h"
PetscErrorCode PetscSFGetGraph(PetscSF sf,PetscInt *nroots,PetscInt *nleaves,const PetscInt **ilocal,const PetscSFNode **iremote)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<DT><B>sf </B> -star forest
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nroots </B></TD><TD>- number of root vertices on the current process (these are possible targets for other process to attach leaves)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nleaves </B></TD><TD>- number of leaf vertices on the current process, each of these references a root on any process
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ilocal </B></TD><TD>- locations of leaves in leafdata buffers
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>iremote </B></TD><TD>- remote locations of root vertices for each leaf on the current process
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PetscSF/PetscSFCreate.html#PetscSFCreate">PetscSFCreate</A>(), <A HREF="../PetscSF/PetscSFView.html#PetscSFView">PetscSFView</A>(), <A HREF="../PetscSF/PetscSFSetGraph.html#PetscSFSetGraph">PetscSFSetGraph</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/is/sf/interface/sf.c.html#PetscSFGetGraph">src/vec/is/sf/interface/sf.c</A>
<BR><A HREF="./index.html">Index of all PetscSF 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/ts/examples/tutorials/ex11.c.html">src/ts/examples/tutorials/ex11.c.html</A><BR>
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