how provide a vertex_index property for my graph
问题 Since my graph use setS for vertex, I have to either provide a vertex_index property map for my graph, or give an explicit vertex_id argument to write_graphviz, to be able to use write_graphviz. My graph is defined as: typedef adjacency_list<setS, setS, undirectedS, NodeData, EdgeData> Graph; Where NodeData and EdgeData are structures. Can you please give me a very simple example of how to provide a vertex_index property map for my graph ? or how to give an explicit vertex_id argument to