incidenceMatrix -- computes the incidence matrix of a graph

Usage:

M = incidenceMatrix G
Inputs:
- G, a graph,
Outputs:
- M, a matrix, the incidence matrix of graph G

Description

An incidence matrix M is the #vertexSet of G by #edges of G matrix where entry (i,j) equals 1 if vertex i is incident to edge j, and equals 0 otherwise.

i1 : M = incidenceMatrix cycleGraph 3

o1 = | 1 1 0 |
     | 1 0 1 |
     | 0 1 1 |

              3       3
o1 : Matrix ZZ  <-- ZZ

Ways to use incidenceMatrix:

incidenceMatrix(Graph)

For the programmer

The object incidenceMatrix is a method function.

The source of this document is in Graphs.m2:2049:0.

incidenceMatrix -- computes the incidence matrix of a graph

Description

See also

Ways to use incidenceMatrix:

For the programmer