Adjacency Matrices
Adjacency matrices show the number of direct links between vertices in a network. The topmost row and the leftmost column consist of the vertex labels, and the number in the corresponding cell indicates the number of direct links between the vertices. If A is directly linked to B then B is directly linked to A, so the adjacency matrix is symmetrical about the diagonal from upper left to bottom right.
A | B | C | D | E | F | |
A | 0 | 1 | 0 | 2 | 0 | 0 |
B | 1 | 0 | 1 | 0 | 0 | 0 |
C | 0 | 1 | 0 | 1 | 0 | 1 |
D | 2 | 0 | 1 | 0 | 1 | 1 |
E | 0 | 0 | 0 | 1 | 1 | 1 |
F | 0 | 0 | 1 | 1 | 1 | 0 |