Hi Terry, Thanks for the suggestion, but the boost::get statement seems to work fine. The error occurs in the call to connected_components on the last line. The compiler output is m:\Code\Replace_NewWaveProp\Boost\boost\property_map.hpp(349) : error C2678: binary '+' : no operator found which takes a left-hand operand of type 'const std::vector<_Ty>::iterator' (or there is no acceptable conversion) with [ _Ty=boost::default_color_type ] m:\Code\Replace_NewWaveProp\Boost\boost\property_map.hpp(349) : while compiling class-template member function 'boost::default_color_type boost::iterator_property_map<RandomAccessIterator,IndexMap,T,R>::operator [](boost::iterator_property_map<RandomAccessIterator,IndexMap,T,R>::key_type) const' with [ RandomAccessIterator=std::vector<boost::default_color_type>::iterator, IndexMap=boost::detail::choose_pmap_helper<boost::property_value<boost::bgl_named_params<boost::detail::components_recorder<ComponentPropertyMap>,boost::graph_visitor_t,boost::no_property>,boost::vertex_index_t>::type,Graph,boost::vertex_index_t>::const_result_type, T=boost::default_color_type, R=boost::default_color_type & ] m:\Code\Replace_NewWaveProp\Boost\boost\graph\depth_first_search.hpp(250) : see reference to class template instantiation 'boost::iterator_property_map<RandomAccessIterator,IndexMap,T,R>' being compiled with [ RandomAccessIterator=std::vector<boost::default_color_type>::iterator, IndexMap=boost::detail::choose_pmap_helper<boost::property_value<boost::bgl_named_params<boost::detail::components_recorder<ComponentPropertyMap>,boost::graph_visitor_t,boost::no_property>,boost::vertex_index_t>::type,Graph,boost::vertex_index_t>::const_result_type, T=boost::default_color_type, R=boost::default_color_type & ] m:\Code\Replace_NewWaveProp\Boost\boost\graph\depth_first_search.hpp(332) : see reference to function template instantiation 'void boost::detail::dfs_dispatch<boost::detail::error_property_not_found>::apply<VertexListGraph,boost::detail::choose_param_helper<boost::detail::error_property_not_found>::result<Default>::type,boost::detail::choose_param_helper<Param>::result<boost::dfs_visitor<>>::type,boost::detail::components_recorder<ComponentsMap>,boost::graph_visitor_t,boost::no_property>(const VertexListGraph &,DFSVisitor,Vertex,const boost::bgl_named_params<T,T ag,Base> &,boost::detail::error_property_not_found)' being compiled with [ VertexListGraph=Graph, Default=std::allocator<boost::detail::adj_list_gen<boost::adjacency_list<boost::setS,boost::setS,boost::undirectedS,VertexComponentProperty>,boost::setS,boost::setS,boost::undirectedS,boost::detail::retag_property_list<boost::vertex_bundle_t,VertexComponentProperty>::type,boost::detail::retag_property_list<boost::edge_bundle_t,boost::no_property>::type,boost::no_property,boost::listS>::config::vertex_ptr >::value_type , Param=boost::property_value<boost::bgl_named_params<boost::detail::components_recorder<ComponentPropertyMap>,boost::graph_visitor_t,boost::no_property>,boost::graph_visitor_t>::type, ComponentsMap=ComponentPropertyMap, DFSVisitor=boost::detail::choose_param_helper<boost::property_value<boost::bgl_named_params<boost::detail::components_recorder<ComponentPropertyMap>,boost::graph_visitor_t,boost::no_property>,boost::graph_visitor_t>::type>::result<boost::dfs_visitor<>>::type, Vertex=boost::detail::choose_param_helper<boost::detail::error_property_not_found>::result<std::allocator<boost::detail::adj_list_gen<boost::adjacency_list<boost::setS,boost::setS,boost::undirectedS,VertexComponentProperty>,boost::setS,boost::setS,boost::undirectedS,boost::detail::retag_property_list<boost::vertex_bundle_t,VertexComponentProperty>::type,boost::detail::retag_property_list<boost::edge_bundle_t,boost::no_property>::type,boost::no_property,boost::listS>::config::vertex_ptr >::value_type >::type, T=boost::detail::components_recorder<ComponentPropertyMap>, Tag=boost::graph_visitor_t, Base=boost::no_property ] m:\Code\Replace_NewWaveProp\Boost\boost\graph\connected_components.hpp(93) : see reference to function template instantiation 'void boost::depth_first_search<Graph,boost::detail::components_recorder<ComponentsMap>,boost::graph_visitor_t,boost::no_property>(const VertexListGraph &,const boost::bgl_named_params<T,Tag,Base> &)' being compiled with [ Graph=Graph, ComponentsMap=ComponentPropertyMap, VertexListGraph=Graph, T=boost::detail::components_recorder<ComponentPropertyMap>, Tag=boost::graph_visitor_t, Base=boost::no_property ] TestBoost.cpp(29) : see reference to function template instantiation 'boost::property_traits<PA>::value_type boost::connected_components<Graph,ComponentPropertyMap>(const Graph &,ComponentMap)' being compiled with [ PA=ComponentPropertyMap, Graph=Graph, ComponentMap=ComponentPropertyMap ] ----- Original Message ---- From: Stephen Torri <storri@torri.org> To: boost-users@lists.boost.org Sent: Friday, April 13, 2007 2:41:44 PM Subject: Re: [Boost-users] BGL: need help with connected_components and boost::setS On Fri, 2007-04-13 at 04:50 -0700, Maarten Nieber wrote:

Graph g; ComponentPropertyMap vertexToComponent = boost::get(component_t(), g);

// THIS LINE DOES NOT COMPILE. No problem if boost::vecS is used instead of boost::setS in the Graph typedef! connected_components(g, vertexToComponent); }

I believe you do not want the () after the word component_t. In my examples I do not have boost::property_map<Graph_Base::Graph_t, boost::vertex_name_t>::type clist = boost::get(boost::vertex_name, m_graph); I think you want the line to read: Graph g; ComponentPropertyMap vertexToComponent = boost::get(component_t, g); Stephen _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com