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