**petsc-master 2018-06-22**

# MatColoringSetDistance

Sets the distance of the coloring
### Synopsis

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

Logically Collective on MatColoring

### Input Parameter

**mc **- the MatColoring context
**dist **- the distance the coloring should compute

### Notes

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.

### Keywords

Coloring, distance, Jacobian

### See Also

MatColoringGetDistance(), 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