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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="DMSetMatrixStructureOnly"><H1>DMSetMatrixStructureOnly</H1></A>
When <A HREF="../DM/DMCreateMatrix.html#DMCreateMatrix">DMCreateMatrix</A>() is called, the matrix structure will be created but the array for values will not be allocated.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DM/DMSetMatrixStructureOnly.html#DMSetMatrixStructureOnly">DMSetMatrixStructureOnly</A>(<A HREF="../DM/DM.html#DM">DM</A> dm, <A HREF="../Sys/PetscBool.html#PetscBool">PetscBool</A> only)
</PRE>
Logically Collective on dm
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</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 <A HREF="../DM/DM.html#DM">DM</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>only </B></TD><TD>- <A HREF="../Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> if only want matrix stucture
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMCreateMatrix.html#DMCreateMatrix">DMCreateMatrix</A>(), <A HREF="../DM/DMSetMatrixPreallocateOnly.html#DMSetMatrixPreallocateOnly">DMSetMatrixPreallocateOnly</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/dm/interface/dm.c.html#DMSetMatrixStructureOnly">src/dm/interface/dm.c</A>
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