Thank you for your answer. I don't know '*first' will give an edge_description already.

TC MA wrote:

...

G[source(*first, G)].y << " joins " << G[target(*first, G)].x << "," << G[target(*first, G)].y << " weight " << G[edge(*first)].weight << endl; ++first;

What's the 'edge' function and why do you call it? What about just '*first', which gives you an edge_description already?

- Volodya

===== TingChong Ma ______________________________________________________________________ Post your free ad now! http://personals.yahoo.ca