Editing Degree matrix (section)

==Example==

The following undirected graph has a 6x6 degree matrix with values:
 
{|class="wikitable"
![[Vertex labeled graph]]
!Degree matrix
|-
|[[Image:6n-graph2.svg|175px]]
|<math>\begin{pmatrix}
4 & 0 & 0 & 0 & 0 & 0\\
0 & 3 & 0 & 0 & 0 & 0\\
0 & 0 & 2 & 0 & 0 & 0\\
0 & 0 & 0 & 3 & 0 & 0\\
0 & 0 & 0 & 0 & 3 & 0\\
0 & 0 & 0 & 0 & 0 & 1\\
\end{pmatrix}</math>
|}

Note that in the case of undirected graphs, an edge that starts and ends in the same node increases the corresponding degree value by 2 (i.e. it is counted twice).