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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="MatCoarsenApply"><H1>MatCoarsenApply</H1></A>
Gets a coarsen for a matrix.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
PetscErrorCode MatCoarsenApply(MatCoarsen coarser)
</PRE>
Collective on <A HREF="../Mat/MatCoarsen.html#MatCoarsen">MatCoarsen</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>coarsen </B> -the coarsen
<br>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
To specify the coarsen through the options database, use one of
the following
<pre>
-mat_coarsen_type mis
</pre>
To see the coarsen result
<pre>
-mat_coarsen_view
</pre>
<P>
<P>
Notes: Use <A HREF="../MatOrderings/MatCoarsenGetData.html#MatCoarsenGetData">MatCoarsenGetData</A>() to access the results of the coarsening
<P>
The user can define additional coarsens; see <A HREF="../MatOrderings/MatCoarsenRegister.html#MatCoarsenRegister">MatCoarsenRegister</A>().
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
matrix, get, coarsen
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../MatOrderings/MatCoarsenRegister.html#MatCoarsenRegister">MatCoarsenRegister</A>(), <A HREF="../MatOrderings/MatCoarsenCreate.html#MatCoarsenCreate">MatCoarsenCreate</A>(),
<BR><A HREF="../MatOrderings/MatCoarsenDestroy.html#MatCoarsenDestroy">MatCoarsenDestroy</A>(), <A HREF="../MatOrderings/MatCoarsenSetAdjacency.html#MatCoarsenSetAdjacency">MatCoarsenSetAdjacency</A>(), ISCoarsenToNumbering(),
ISCoarsenCount(), <A HREF="../MatOrderings/MatCoarsenGetData.html#MatCoarsenGetData">MatCoarsenGetData</A>()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/coarsen/coarsen.c.html#MatCoarsenApply">src/mat/coarsen/coarsen.c</A>
<BR><A HREF="./index.html">Index of all MatOrderings routines</A>
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