On Mon, 2004-11-08 at 15:17, Jeffrey Holle wrote:

I believe you need to use boost::make_label_writer. Here is how I use it to place information from an external property map:

ofstream os("workFlow.dot"); write_graphviz(os,workFlowGraph_,make_label_writer(workFlowVertexLabeler(workFlowGraph_)));

Where workFlowVertexLabeler is:

struct workFlowVertexLabeler { workFlowVertexLabeler(WorkFlowGraph& workFlowGraph) : workFlowGraph_(workFlowGraph) {} std::string operator[](const WorkFlowVertex& v) const { return workFlowGraph_.getWorkFlowData()[v].getLabel(); } private: WorkFlowGraph& workFlowGraph_;

Your solution words when modified for my situation (data structure). The problem with the edge labelling still remains. I see a problem with the loop in graphviz.hpp that prints out the edges: typename graph_traits<Graph>::edge_iterator ei, edge_end; for(tie(ei, edge_end) = edges(g); ei != edge_end; ++ei) { out << source(*ei, g) << Traits::delimiter() << target(*ei, g) << " "; epw(out, *ei); //print edge attributes out << ";" << std::endl; } There is no operator<< function for graph_traits so the memory location of the vertex_descriptor that is returned is printed instead of the vertex_index_t value used to name the nodes above. I don't see why this does not work as the documentation example. Stephen -- Email: storri@torri.org

On Nov 8, 2004, at 9:28 PM, Meredith L. Patterson wrote:

I ran into this exact same problem a few days ago, and posted about it (even referring to the same code snippet you did), but received no response.

Sorry! I lost the message in the shuffle.

I eventually ended up modifying the loop in graphviz.hpp, replacing

out << source(*ei, g) << Traits::delimiter() << target(*ei, g)) << " ";

with

out << get(vertex_index, source(*ei, g)) << Traits::delimiter() << \ get(vertex_index, target(*ei, g)) << " ";

FWIW, we actually did fix this in CVS back in May and the corrected code will be in 1.32.0. Doug