On Mon, Mar 15, 2010 at 9:21 AM, Jeremiah Willcock <jewillco@osl.iu.edu> wrote:

On Sun, 14 Mar 2010, Kya Bey wrote:

Hi All ,
I've been trying to use a custom structure for describing the various edge properties of a graph. I'm defining a graph as the following

struct edge_properties {
   int capacity ;
   double weight ;
   typedef struct edge_properties_tag kind ; // NOT SURE what this does ?
};

typedef boost::adjacency_list<listS, vecS, bidirectionalS,
   property<vertex_name_t, std::string>,
   edge_properties > Graph;

This allows me to create a Graph instance g. I've been trying to retrieve the edge properties via a get call, but have not been able to
do so.

It appears that you are trying to use bundled properties. There is information on using them at <URL:http://www.boost.org/doc/libs/1_42_0/libs/graph/doc/bundles.html>. You do not need the kind in your structure in that case.

I've tried various variants but seems to me i'm missing something fundamental in the way boost-graph keeps the edge_properties hidden.
Any pointers will be useful.

The syntax you want is get(&edge_properties::capacity, g) to get the capacity, and something similar for the weight.

-- Jeremiah Willcock
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