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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="DMCompositeGetAccessArray"><H1>DMCompositeGetAccessArray</H1></A>
Allows one to access the individual packed vectors in their global representation.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdmcomposite.h"
PetscErrorCode DMCompositeGetAccessArray(DM dm,Vec pvec,PetscInt nwanted,const PetscInt *wanted,Vec *vecs)
</PRE>
Collective on DMComposite
<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>dm </B></TD><TD>- the packer object
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>pvec </B></TD><TD>- packed vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nwanted </B></TD><TD>- number of vectors wanted
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>wanted </B></TD><TD>- sorted array of vectors wanted, or NULL to get all vectors
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<DT><B>vecs </B> -array of requested global vectors (must be allocated)
<br>
<P>
Notes: Use <A HREF="../DM/DMCompositeRestoreAccessArray.html#DMCompositeRestoreAccessArray">DMCompositeRestoreAccessArray</A>() to return the vectors when you no longer need them
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMCompositeGetAccess.html#DMCompositeGetAccess">DMCompositeGetAccess</A>(), <A HREF="../DM/DMCompositeGetEntries.html#DMCompositeGetEntries">DMCompositeGetEntries</A>(), <A HREF="../DM/DMCompositeScatter.html#DMCompositeScatter">DMCompositeScatter</A>(), <A HREF="../DM/DMCompositeGather.html#DMCompositeGather">DMCompositeGather</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/dm/impls/composite/pack.c.html#DMCompositeGetAccessArray">src/dm/impls/composite/pack.c</A>
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