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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="DMCreateAggregates"><H1>DMCreateAggregates</H1></A>
Gets the aggregates that map between grids associated with two DMs.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
PetscErrorCode DMCreateAggregates(DM dmc, DM dmf, Mat *rest)
</PRE>
Collective on DM
<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>dmc </B></TD><TD>- the coarse grid DM
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dmf </B></TD><TD>- the fine grid DM
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<DT><B>rest </B> -the restriction matrix (transpose of the projection matrix)
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
interpolation, restriction, multigrid
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMRefine.html#DMRefine">DMRefine</A>(), <A HREF="../DM/DMCreateInjection.html#DMCreateInjection">DMCreateInjection</A>(), <A HREF="../DM/DMCreateInterpolation.html#DMCreateInterpolation">DMCreateInterpolation</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/dm/interface/dm.c.html#DMCreateAggregates">src/dm/interface/dm.c</A>
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