I don't see why you can't just pass get(vertex_component, g) as the component map in connected_components()
Yes, that works, code attached. I've also changed to using pointers for my graph and filtered graph so that I can use new and delete. In my real code I have a StringGraph class with Graph and FilteredGraph member pointers. I'm assuming that I should free any memory associated with FilteredGraph, before I allocate a new one, as I could have many many components. Also I will want to deallocate the memory for the whole Graph before the program finishes as I need to use it for something else. So is delete the best way? Does the destructor for Graph/FilteredGraph actually release all the memory? I don't see any other clean-up functions in the documentation.
Look at boost::keep_all (in filtered_graph.hpp); that can be used to keep all of a certain kind of entity.
It's seems to me that these filters are only actually called when you ask for vertices or edges of the FilteredGraph. That being true I guess I would need both function objects? Thanks again for your help, 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.