Re: [Boost-users] BGL - accessing component subgraphs.

You don't need the edge predicate if you're using an induced subgraph (which I believe you are). Filtering the endpoints of an edge to ensure that both vertices are present in the filtered graph is done automatically no matter what edge predicate you use, so keep_all will work for what you want to do.

Yes, that works, thanks for your help. Final toy example attached in case it's useful for somebody else. Cheers, Adam. -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.