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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="DMPlexGetTree"><H1>DMPlexGetTree</H1></A>
get the tree that describes the hierarchy of non-conforming mesh points. Collective on dm
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdmplex.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DMPLEX/DMPlexGetTree.html#DMPlexGetTree">DMPlexGetTree</A>(<A HREF="../DM/DM.html#DM">DM</A> dm, <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> *parentSection, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> *parents[], <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> *childIDs[], <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> *childSection, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> *children[])
</PRE>
<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>dm </B></TD><TD>- the DMPlex object
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>parentSection </B></TD><TD>- a section describing the tree: a point has a parent if it has 1 dof in the section; the section
offset indexes the parent and childID list
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>parents </B></TD><TD>- a list of the point parents
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>childIDs </B></TD><TD>- identifies the relationship of the child point to the parent point; if there is a reference tree, then
the child corresponds to the point in the reference tree with index childID
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>childSection </B></TD><TD>- the inverse of the parent section
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>children </B></TD><TD>- a list of the point children
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DMPLEX/DMPlexSetTree.html#DMPlexSetTree">DMPlexSetTree</A>(), <A HREF="../DMPLEX/DMPlexSetReferenceTree.html#DMPlexSetReferenceTree">DMPlexSetReferenceTree</A>(), <A HREF="../DMPLEX/DMPlexSetAnchors.html#DMPlexSetAnchors">DMPlexSetAnchors</A>(), <A HREF="../DMPLEX/DMPlexGetTreeParent.html#DMPlexGetTreeParent">DMPlexGetTreeParent</A>(), <A HREF="../DMPLEX/DMPlexGetTreeChildren.html#DMPlexGetTreeChildren">DMPlexGetTreeChildren</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/plex/plextree.c.html#DMPlexGetTree">src/dm/impls/plex/plextree.c</A>
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