ISColoring

sets of ISs that define a coloring of something, such as a graph defined by a sparse matrix

Synopsis

typedef struct _n_ISColoring *ISColoring;

Notes

One should not access the *is records below directly because they may not yet have been created. One should use ISColoringGetIS() to make sure they are created when needed.

When the coloring type is IS_COLORING_LOCAL the coloring is in the local ordering of the unknowns. That is the matching the local (ghosted) vector; a local to global mapping must be applied to map them to the global ordering.

Developer Note

This is not a PetscObject

See Also

IS, MatColoringCreate(), MatColoring, ISColoringCreate(), ISColoringGetIS(), ISColoringView()

Level

intermediate

Location

include/petscistypes.h

Examples

src/tao/unconstrained/tutorials/minsurf2.c
src/mat/tutorials/ex16.c
src/snes/tutorials/ex14.c

---

Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages