On 14.08.2014 17:28, Dominik wrote: > Hi, > > I have a code that accesses pmap.a for a PropertyMap pmap attached to > vertex-filtered GraphView quite frequently. The function > PropertyMap._get_data calls the GraphView constructor every time, simply to > construct a non-filtered graph view from which it obtains e.g. the number of > vertices for vertex properties. > > > > Quite some time is spent in this constructor cumulatively, since it is > called millions of times from _get_data in my case. It seems to me that > there could be a simpler solution if the API is extended a bit. > > See in graph.cc > > > Actually, all we might want to do, is to use SoftNumVertices despite working > on a vertex-filtered graph, right? So, we don't need to construct a > non-filtered graph. Is that correct? It could be kind of a > "GetUnfilteredNumberOfVertices".
I have fixed this now in git: https://git.skewed.de/count0/graph-tool/commit/a49b19f3f94cc71919a4b2e685b0cadda85b3a9c Best, Tiago -- Tiago de Paula Peixoto <[email protected]>
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