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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="DMForestSetAdaptivityForest"><H1>DMForestSetAdaptivityForest</H1></A>
During the pre-setup phase, set the forest from which the current forest will be adapted (e.g., the current forest will be refined/coarsened/repartitioned from it) im <A HREF="../DM/DMSetUp.html#DMSetUp">DMSetUp</A>(). Usually not needed by users directly: <A HREF="../DMFOREST/DMForestTemplate.html#DMForestTemplate">DMForestTemplate</A>() constructs a new forest to be adapted from an old forest and calls this routine.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdmforest.h"
#include "petscdm.h"
#include "petscdmlabel.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DMFOREST/DMForestSetAdaptivityForest.html#DMForestSetAdaptivityForest">DMForestSetAdaptivityForest</A>(<A HREF="../DM/DM.html#DM">DM</A> dm,<A HREF="../DM/DM.html#DM">DM</A> adapt)
</PRE>
Note that this can be called after setup with adapt = NULL, which will clear all internal data related to the
adaptivity forest from dm. This way, repeatedly adapting does not leave stale <A HREF="../DM/DM.html#DM">DM</A> objects in memory.
<P>
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 new forest, which will be constructed from adapt
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>adapt </B></TD><TD>- the old forest
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DMFOREST/DMForestGetAdaptivityForest.html#DMForestGetAdaptivityForest">DMForestGetAdaptivityForest</A>(), <A HREF="../DMFOREST/DMForestSetAdaptivityPurpose.html#DMForestSetAdaptivityPurpose">DMForestSetAdaptivityPurpose</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/impls/forest/forest.c.html#DMForestSetAdaptivityForest">src/dm/impls/forest/forest.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ts/examples/tutorials/ex11.c.html">src/ts/examples/tutorials/ex11.c.html</A><BR>
<BR><A HREF="./index.html">Index of all DMFOREST routines</A>
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