# PetscSectionSym#

Symmetries of the data referenced by a PetscSection.

## Synopsis#

typedef struct _p_PetscSectionSym *PetscSectionSym;


Often the order of data index by a PetscSection 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 PetscSectionSym 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.

PetscSection, PetscSectionSymCreate(), PetscSectionSymDestroy(), PetscSectionSetSym(), PetscSectionGetSym(), PetscSectionSetFieldSym(), PetscSectionGetFieldSym(), PetscSectionGetSymPoints(), PetscSectionSymType, PetscSectionSymSetType(), PetscSectionSymGetType()

developer

## Location#

include/petscsectiontypes.h

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