Hi, I am trying to read an undirected_graph from a .dot file with read_graphviz, but I seem to some problems regarding the properties of the graph, which are *vertex_index* and *edge_weight*. /terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::dynamic_const_put_error>

' what(): Attempt to put a value into a const property map: /

The code I am using is followed: *typedef property<edge_weight_t, int> EdgeWeightProperty; typedef adjacency_list<vecS, vecS, undirectedS, no_property, EdgeWeightProperty> undirected_graph; typedef property_map<undirected_graph, edge_weight_t>::type weight_map_type; typedef property_traits<weight_map_type>::value_type weight_type; typedef std::pair<int, int> edge_t; undirected_graph read_graph(std::string filename, dynamic_properties * dp) { std::ifstream in(filename.c_str()); // ... check errors in file ... undirected_graph g(0); read_graphviz(in, g, *dp, "node_id"); in.close(); return g; } int main() { boost::dynamic_properties dp; // populate graph properties by reference undirected_graph g = read_graph("test_boost_graph.dot", &dp); dp.property("node_id", get(vertex_index, g)); dp.property("w", get(edge_weight, g)); // write to cout write_graphviz_dp(cout, g, dp, "node_id"); return 0; }* I think the example is pretty simple and it should work. However I don't get much when googling the resulting error. Does someone know what's this about? Thanks in advance -- View this message in context: http://boost.2283326.n4.nabble.com/Properties-error-reading-undirected-graph... Sent from the Boost - Users mailing list archive at Nabble.com.