petsc-3.7.3 2016-07-24
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# MatColoringCreate

Creates a matrix coloring context.

### Synopsis

    #include "petscmat.h"
    PetscErrorCode MatColoringCreate(Mat m,MatColoring *mcptr)

Collective on MatColoring

### Input Parameters

comm -MPI communicator

### Output Parameter

mcptr -the new MatColoring context

### Options Database Keys

| -mat_coloring_type | - the type of coloring algorithm used
| -mat_coloring_maxcolors | - the maximum number of relevant colors, all nodes not in a color are in maxcolors+1
| -mat_coloring_distance | - compute a distance 1,2,... coloring.
| -mat_coloring_view | - print information about the coloring and the produced index sets
| -mat_coloring_valid | - debugging option that prints all coloring incompatibilities

### Keywords

Coloring, Matrix

### See Also

MatColoring, MatColoringApply()

Level:beginner
Location: src/mat/color/interface/matcoloring.c
Index of all MatOrderings routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/mat/examples/tutorials/ex16.c.html