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%% Incidence Matrix of Directed Graph % Create a directed graph using an edge list, and then calculate the % incidence matrix. % Copyright 2015 The MathWorks, Inc. s = [1 2 1 3 2 3 3 3]; t = [2 1 3 1 3 4 5 6]; G = digraph(s,t) %% % I = incidence(G) %% % Each column in |I| represents the source and target nodes of a single % edge in |G|.