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<TITLE>DMMoabPToRMapping</TITLE>
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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="DMMoabPToRMapping"><H1>DMMoabPToRMapping</H1></A>
Compute the mapping from the physical coordinate system for a given element to the canonical reference element. In addition to finding the inverse mapping evaluation through Newton iteration, the basis function at the parametric point is also evaluated optionally.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdt.h"
#include "petscdmmoab.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DMMOAB/DMMoabPToRMapping.html#DMMoabPToRMapping">DMMoabPToRMapping</A>( const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> dim, const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> nverts, const <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *coordinates, const <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>* xphy, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>* natparam, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>* phi)
</PRE>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<P>
<DT><B><A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> dim, the element dimension (1=EDGE, 2=QUAD/TRI, 3=HEX/TET)</B> -. <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> nverts, the number of vertices in the physical element
<br>
<DT><B><A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> coordinates, the coordinates of vertices in the physical element</B> -. <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>[3] xphy, the coordinates of physical point for which natural coordinates (in reference frame) are sought
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B><A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>[3] natparam, the natural coordinates (in reference frame) corresponding to xphy</B> -. <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>[nverts] phi, the basis functions evaluated at the natural coordinates (natparam)
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
DMMoab, Mapping, FEM
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/impls/moab/dmmbfem.cxx#DMMoabPToRMapping">src/dm/impls/moab/dmmbfem.cxx</A>
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