Hello I'm currently trying to create a randomly made graph and I'm having problem populating the properties using the randomize_property. Just like this man http://lists.boost.org/boost-users/2005/09/14033.php I'm wondering if it's even possible to use randomize_property with the bundled properties? I hope so because the bundled properties are in my opinion much more easy to use. Here's the bundled property I would like to randomize (which is quite basic): struct City { int pos_X; int pos_Y; }; I've tried to get from it the property class needed using vertex_bundle_type<Graph>::type this way : randomize_property<vertex_bundle_type<Graph>::type>(m_Graph,l_Gen); I then looked in the source code and it seems that the function merely takes a property_map and randomly changes the values. So I tried this (I was desperate^^) using the way "get" works with bundled property : randomize_property<&City::pos_X>(m_Graph,l_Gen); Here's the source code for randomize_property boost/graph/random.hpp 169 template<class Property, class G, class RandomGenerator> 170 void randomize_property(G& g, RandomGenerator& rg, 171 Property, vertex_property_tag) 172 { 173 typename property_map<G, Property>::type pm = get(Property(), g); 174 typename graph_traits<G>::vertex_iterator vi, ve; 175 for (tie(vi, ve) = vertices(g); vi != ve; ++vi) { 176 pm[*vi] = rg(); 177 } 178 } I know that for my short example and, by inspiring me from the source, I could do it manually but I'd rather do it using genericity. Hope there isn't too much broken english. Thanks M.Corbion