Hi Juerg, It sounds like you want std::pair to be an internal property attached to vertices of the graph. Check out the vertex-name-property.cpp example file. Cheers, Jeremy On Mon, 28 Oct 2002, Juerg Tschirren wrote: yg-boo> yg-boo> In the Boost Graph Library, is it possible to have a yg-boo> custom-defined type for vertices, e.g., I would like to have yg-boo> yg-boo> boost::graph_traits<Graph>::vertex_descriptor yg-boo> yg-boo> map to yg-boo> yg-boo> std::pair yg-boo> yg-boo> Can this be done? If yes, how? yg-boo> yg-boo> Juerg yg-boo> yg-boo> yg-boo> yg-boo> yg-boo> yg-boo> Info: http://www.boost.org yg-boo> Wiki: http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl yg-boo> Unsubscribe: mailto:boost-users-unsubscribe@yahoogroups.com yg-boo> yg-boo> yg-boo> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ yg-boo> yg-boo> ---------------------------------------------------------------------- Jeremy Siek http://php.indiana.edu/~jsiek/ Ph.D. Student, Indiana Univ. B'ton email: jsiek@osl.iu.edu C++ Booster (http://www.boost.org) office phone: (812) 855-3608 ----------------------------------------------------------------------