[Boost-users] write_graphviz: write out edges when vertex data is a boost::shared_ptr?

From: Stephen torri (storri_at_[hidden])
Date: 2004-11-08 15:50:23

How does one write out the proper edge node names when the vertex data
is a boost::shared_ptr? My graph is defined as:

  typedef property< vertex_index_t, uint32_t,
     property< vertex_name_t, boost::shared_ptr<Component> > >
  VertexProperty;

  typedef adjacency_list<setS, // OutEdgeList
                         setS, // VertexList
                         directedS, // Directed
                         VertexProperty> // VertexProperties
  Graph_Type;

The call in graphviz.hpp at line 269 has me confused. I understand that
the node ids are printed out by looking for the value stored in the
vertex_index_t property, graphviz.hpp at line 263. So if the value
stored at the vertex_index_t property was the value '3' the node's name
would be '3'. The edges are what have me confused. I would expect that
the source id and the target it would be the value  of the
vertex_index_t property. So if there are two nodes the dot file would
be:

0[label="A"];
1[label="B"];
0 -> 1;

Yet with a boost::shared_ptr stored in a vertex_name_t property I get:

0[label="A"];
1[label="B"];
0x807a108->0x807a128;

Well anything starting with a '0x' is ambigiuos to the dot parser. It
breaks the 0x807a108 into two names. 

I need to use a boost::shared_ptr for my data. I believe I have not used
the right boost::property type. Is that right?

What I expect to see as output for the dot file is:

0[label="A"];
1[label="B"];
0->1;

Stephen
-- 
Email: storri_at_[hidden]