Re: [Boost-users] BGL and graphviz: extra property for links

From: Irek Szczesniak (ijs_at_[hidden])
Date: 2006-04-14 17:03:55

I resolved the problem.  I should have declared the graphs as:

typedef boost::adjacency_list<vecS, vecS, undirectedS,
        property<vertex_name_t, std::string>,
        property<edge_weight_t, double,
                property<edge_lambdas_t, int> >,
        no_property > Graph;

Sorry for the confusion.

Best,
Irek

Irek Szczesniak wrote:

> I want to use the read_graphiz function to load graphviz files.  Graph
> links have an extra property called "lambdas," which tells about the
> number of wavelengths a link has.  This link attribute is a positive
> integer.
> 
> Below I'm sending you the program which I thought should work, but it
> doesn't.  Plus, there is a sample graphviz file.  I have hard time
> trying to decipher the errors, and made little progress, and so I
> would appreciate any advice.  I'm attaching the compilation errors.
> 
> Thanks for reading.
> 
> 
> Thanks & best,
> Irek
> 
> 
> *********************************************************************
> 
> #include <fstream>
> #include <string>
> 
> #include <boost/graph/adjacency_list.hpp>
> #include <boost/graph/graphviz.hpp>
> #include <boost/graph/depth_first_search.hpp>
> #include <boost/graph/iteration_macros.hpp>
> 
> using namespace boost;
> 
> enum edge_lambdas_t { edge_lambdas };
> 
> namespace boost
> {
>   BOOST_INSTALL_PROPERTY(edge, lambdas);
> }
> 
> typedef boost::adjacency_list<vecS, vecS, undirectedS,
>                   property<vertex_name_t, std::string>,
>                   property<edge_weight_t, double>,
>                   property<edge_lambdas_t, int> > Graph;
> 
> int
> main()
> {
>   Graph g;
>   dynamic_properties dp;
> 
>   dp.property("lambdas", get(edge_lambdas, g));
>   dp.property("node_id", get(vertex_name, g));
>   dp.property("distance", get(edge_weight, g));
> 
>   read_graphviz(std::cin, g, dp);
> }
> 
> ***********************************************************************
> 
> graph {
>   a;
>   b;
>   c;
>   c -- a [distance="100", lambdas="4"];
>   a -- b [distance="200", lambdas="4"];
> }
> 
> ***********************************************************************
> 
> g++ -I /usr/local/include/boost-1_33_1/ -l bgl-viz  load.cc -o load
> /usr/local/include/boost-1_33_1/boost/dynamic_property_map.hpp: In 
> member function `std::string 
> boost::detail::dynamic_property_map_adaptor<PropertyMap>::get_string(const 
 > (...)