test_digraph_adj, a Fortran90 code which defines a number of examples of directed graphs ("digraphs") in terms of an adjacency matrix.
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test_digraph_adj is available in a Fortran90 version and a MATLAB version and an Octave version and a Python version.
digraph_adj, a Fortran90 code which carries out operations on digraphs, a directed graph. Information is stored in an adjacency matrix. Operations include computing in- and out-degrees, computing the in- and out-degree sequences, counting the edges, printing the adjacency matrix, generating fixed and random examples.