On 06.04.2015 08:54, Guillaume Gay wrote: > Hi all, > > I'm using graph-tool to model mesh-like elements (cells in a > biological tissue). As the model evolves towards more complicated > geometries, I'd very much like to access some of the underlying GCAL > objects not ported to graph-tool (such as faces). For now I rely on a > somehow cumbersome dual propertymaps/pandas data manipulation. > > I was wondering how this could go, but don't know from which end I > shell read the code in graph-tool. Also would some kind of plugin > architecture be possible (i.e. compiling the relevant Cpp bindings as > a shared object compatible with graph-tool)?
It is entirely possible to write such C++ plugins for graph-tool; I do it all the time for my own stuff. However, this is still entirely undocumented. I plan to write this documentation, with a least a simple example, soon. (I will give a small graph-tool tutorial talk in the next NetSci in June, and I want to have this done by then.) In the mean time, you can peak at how the PageRank code is implemented, which is fact a rather complete yet not too long example of how to extend graph-tool: The C++ part: https://git.skewed.de/count0/graph-tool/blob/master/src/graph/centrality/graph_pagerank.hh https://git.skewed.de/count0/graph-tool/blob/master/src/graph/centrality/graph_pagerank.cc The python part: https://git.skewed.de/count0/graph-tool/blob/master/src/graph_tool/centrality/__init__.py#L62 You need to know how to use the BGL and Boost python. Best, Tiago -- Tiago de Paula Peixoto <[email protected]>
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