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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="MatCreateSubMatrixFree"><H1>MatCreateSubMatrixFree</H1></A>
Creates a reduced matrix by masking a full matrix.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petsctao.h"
#include "submatfree.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Tao/MatCreateSubMatrixFree.html#MatCreateSubMatrixFree">MatCreateSubMatrixFree</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> mat,<A HREF="../IS/IS.html#IS">IS</A> Rows, <A HREF="../IS/IS.html#IS">IS</A> Cols, <A HREF="../Mat/Mat.html#Mat">Mat</A> *J)
</PRE>
Collective on matrix
<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>mat </B></TD><TD>- matrix of arbitrary type
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Rows </B></TD><TD>- the rows that will be in the submatrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Cols </B></TD><TD>- the columns that will be in the submatrix
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<DT><B>J </B> -New matrix
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
The caller is responsible for destroying the input objects after matrix J has been destroyed.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatCreate.html#MatCreate">MatCreate</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/tao/matrix/submatfree.c.html#MatCreateSubMatrixFree">src/tao/matrix/submatfree.c</A>
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