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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="PetscSectionSym"><H1>PetscSectionSym</H1></A>
Symmetries of the data referenced by a <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A>.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
typedef struct _p_PetscSectionSym *<A HREF="../PetscSection/PetscSectionSym.html#PetscSectionSym">PetscSectionSym</A>;
</PRE>
Often the order of data index by a <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> is meaningful, and describes additional structure, such as points on a
line, grid, or lattice. If the data is accessed from a different "orientation", then the image of the data under
access then undergoes a symmetry transformation. A <A HREF="../PetscSection/PetscSectionSym.html#PetscSectionSym">PetscSectionSym</A> specifies these symmetries. The types of
symmetries that can be specified are of the form R * P, where R is a diagonal matrix of scalars, and P is a permutation.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A>, <A HREF="../PetscSection/PetscSectionSymCreate.html#PetscSectionSymCreate">PetscSectionSymCreate</A>(), <A HREF="../PetscSection/PetscSectionSymDestroy.html#PetscSectionSymDestroy">PetscSectionSymDestroy</A>(), <A HREF="../PetscSection/PetscSectionSetSym.html#PetscSectionSetSym">PetscSectionSetSym</A>(), <A HREF="../PetscSection/PetscSectionGetSym.html#PetscSectionGetSym">PetscSectionGetSym</A>(), <A HREF="../PetscSection/PetscSectionSetFieldSym.html#PetscSectionSetFieldSym">PetscSectionSetFieldSym</A>(),
<BR><A HREF="../PetscSection/PetscSectionGetFieldSym.html#PetscSectionGetFieldSym">PetscSectionGetFieldSym</A>(), PetscSectionGetSymPoints(), <A HREF="../PetscSection/PetscSectionSymType.html#PetscSectionSymType">PetscSectionSymType</A>, <A HREF="../PetscSection/PetscSectionSymSetType.html#PetscSectionSymSetType">PetscSectionSymSetType</A>(), <A HREF="../PetscSection/PetscSectionSymGetType.html#PetscSectionSymGetType">PetscSectionSymGetType</A>()
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/vec/is/section/../../../../include/petscsectiontypes.h.html#PetscSectionSym">src/vec/is/section/../../../../include/petscsectiontypes.h</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../include/petsc/private/sectionimpl.h.html#_p_PetscSectionSym">_p_PetscSectionSym in include/petsc/private/sectionimpl.h</A><BR>
<BR><A HREF="./index.html">Index of all PetscSection routines</A>
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