Re: [Boost-users] [BGL] Floyd-Warshall Example

Hi Chris, On Friday, 15. April 2011 08:19:23 GOO Creations wrote:

Hi all

I'm trying to figure out how to use the Floyd-Warshall algorithm. It seems like there is no example (like with the other algorithms); can someone maybe point me to an example. I'm having problems with the parameters, especially with the DistanceMatrix.

Perhaps you could be a bit more precise about what your problem is? General understanding? Compiler error? Right initialization?... So I have to answer "at random" for the moment now. I have not yet worked with distance matrices in boost, but judging from the the description of BasicMatrix, it seems to me that a vector > should work. With the _important_ precondition that your vertex-container is vecS in order to be able to convert a vertex_descriptor directly into an integer as index for the DistanceMatrix. Looking at the source-code of the function also yields: for (boost::tie(k, lastk) = vertices(g); k != lastk; k++) where k is dereferenced and then directly used as index, so using vecS should probably work.

Thank you

Hope that helps for the moment.

Chris _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Best, Cedric