sorry for disturbing, i think you mean test example given on http://www.boost.org/doc/libs/1_39_0/libs/graph/example/transitive_closure.c... Yes i tried this example but it is not using this method. void transitive_closure(const Graph& g, GraphTC& tc, G_to_TC_VertexMap g_to_tc_map, VertexIndexMap index_map) Thanks again Amanullah YASIN Master2 (ECD) Ecole Polytechnique Université de Nantes, France. Mob# 06 47 62 89 96 Fix # 02 72 00 26 45 amanyasin@gmail.com On Fri, Jun 5, 2009 at 10:57 AM, Vladimir Prus wrote:

On Friday 05 June 2009 12:52:37 you wrote:

...

Thanks Vladimir Prus, for your reply. Please guide me how i can use this method

Please reply to the list, not personally.

...

void transitive_closure(const Graph& g, GraphTC& tc, G_to_TC_VertexMap g_to_tc_map, VertexIndexMap

index_map)

...

*specially how i can declare and use *

* "G_to_TC_VertexMap" & "*

*VertexIndexMap"*

I have suggested you look at the testcase -- did you do that?

- Volodya