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- // (C) Copyright Andrew Sutton 2007
- //
- // Use, modification and distribution are subject to the
- // Boost Software License, Version 1.0 (See accompanying file
- // LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
- //[degree_centrality_example
- #include <iostream>
- #include <iomanip>
- #include <boost/graph/undirected_graph.hpp>
- #include <boost/graph/exterior_property.hpp>
- #include <boost/graph/degree_centrality.hpp>
- #include "helper.hpp"
- using namespace std;
- using namespace boost;
- // The Actor type stores the name of each vertex in the graph.
- struct Actor
- {
- string name;
- };
- // Declare the graph type and its vertex and edge types.
- typedef undirected_graph<Actor> Graph;
- typedef graph_traits<Graph>::vertex_descriptor Vertex;
- typedef graph_traits<Graph>::edge_descriptor Edge;
- // The name map provides an abstract accessor for the names of
- // each vertex. This is used during graph creation.
- typedef property_map<Graph, string Actor::*>::type NameMap;
- // Declare a container type for degree centralities and its
- // corresponding property map.
- typedef exterior_vertex_property<Graph, unsigned> CentralityProperty;
- typedef CentralityProperty::container_type CentralityContainer;
- typedef CentralityProperty::map_type CentralityMap;
- int
- main(int argc, char *argv[])
- {
- // Create the graph and a property map that provides access
- // to the actor names.
- Graph g;
- NameMap nm(get(&Actor::name, g));
- // Read the graph from standard input.
- read_graph(g, nm, cin);
- // Compute the degree centrality for graph.
- CentralityContainer cents(num_vertices(g));
- CentralityMap cm(cents, g);
- all_degree_centralities(g, cm);
- // Print the degree centrality of each vertex.
- graph_traits<Graph>::vertex_iterator i, end;
- for(boost::tie(i, end) = vertices(g); i != end; ++i) {
- cout << setiosflags(ios::left) << setw(12)
- << g[*i].name << cm[*i] << endl;
- }
- return 0;
- }
- //]
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