MatColoringGetDistance

Gets the distance of the coloring

Synopsis

#include "petscmat.h"  
PetscErrorCode MatColoringGetDistance(MatColoring mc, PetscInt *dist)

Logically Collective

Input Parameter

• mc - the MatColoring context

Output Parameter

• dist - the current distance being used for the coloring.

Note

The distance of the coloring denotes the minimum number of edges in the graph induced by the matrix any two vertices of the same color are. Distance-1 colorings are the classical coloring, where no two vertices of the same color are adjacent. distance-2 colorings are useful for the computation of Jacobians.

See Also

MatColoring, MatColoringSetDistance(), MatColoringApply()

Level

beginner

Location

src/mat/graphops/color/interface/matcoloring.c

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Index of all MatGraphOperations routines
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Index of all manual pages