Hey, I was wondering why compressing graphs to their largest component is so slow in comparison to doing this in C++ directly. The graph-tool way of doing by invoking remove_vertex_if or PurgeVertices are both not very fast. In former times I used copy_graph from boost to copy from a filtered graph object to a new graph object. I cannot find the respective function in graph-tool - is there a reason for that function missing? Ok, this double in-memory requirements, but from my experience things are a lot faster then. So in short: Could a copy_graph function be included in graph-tool? Thanks, -- Sebastian Weber Group of Cell Communication and Control Freiburg Institute for Advanced Studies - FRIAS School of Life Sciences - LIFENET Albert-Ludwigs-Universität Freiburg Albertstr. 19 79104 Freiburg T.: +49-761-203-97237 Fax:+49-761-203-97334