MatColoringSetMaxColors

Sets the maximum number of colors to produce

Synopsis

#include "petscmat.h"  
PetscErrorCode MatColoringSetMaxColors(MatColoring mc, PetscInt maxcolors)

Logically Collective

Input Parameters

• mc - the MatColoring context

• maxcolors - the maximum number of colors to produce

Notes

Vertices not in an available color are set to have color maxcolors+1, which is not a valid color as they may be adjacent.

This works only for MATCOLORINGGREEDY and MATCOLORINGJP

This may be used to compute a certain number of independent sets from the graph. For instance, while using MATCOLORINGGREEDY and maxcolors = 1, one gets out an MIS.

See Also

MatColoring, MatColoringGetMaxColors(), MatColoringApply()

Level

beginner

Location

src/mat/color/interface/matcoloring.c

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Index of all MatOrderings routines
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Index of all manual pages