WeightMatrix returns the matrix of edge weights of a weighted graph. The optional argument cp is used to control whether the weight matrix of the graph or a copy of it should be returned. The argument cp can be either the symbol copy or an equation of the form copy=true or copy=false. If the argument is missing the command returns a copy of the weight matrix of the graph by default.

$\mathrm{with}\left(\mathrm{GraphTheory}\right)\:$

$G≔\mathrm{Graph}\left(\left\{\left[\left\{1\,2\right\}\,2\right]\,\left[\left\{2\,3\right\}\,1\right]\right\}\right)$

$G≔\mathrm{Graph\; 1:\; an\; undirected\; weighted\; graph\; with\; 3\; vertices\; and\; 2\; edge(s)}$

$\mathrm{WeightMatrix}\left(G\right)$

$\left[\begin{array}{ccc}0& 2& 0\\ 2& 0& 1\\ 0& 1& 0\end{array}\right]$