boost-graph

How to create a C++ Boost undirected graph and traverse it in depth first search (DFS) order?

by

// Boost DFS example on an undirected graph. // Create a sample graph, traverse its nodes // in DFS order and print out their values. #include <boost/graph/adjacency_list.hpp> #include <boost/graph/depth_first_search.hpp> #include <iostream> using namespace std; typedef boost::adjacency_list<boost::listS, boost::vecS, boost::undirectedS> MyGraph; typedef boost::graph_traits<MyGraph>::vertex_descriptor MyVertex; class MyVisitor : public boost::default_dfs_visitor { public: void discover_vertex(MyVertex v, const MyGraph& g) … Read more

Find Boost BGL vertex by a key

by

I think I have found such mechanism. It is called labeled_graph and is a part of BGL. Instead of using adjacency_list, one can use a predefined wrapper labeled_graph: typedef boost::labeled_graph< boost::adjacency_list< boost::vecS, boost::vecS, boost::directedS, Data >, std::string > Graph; After defining a graph like this, it is possible to access vertices in the following manner: … Read more

Modifying vertex properties in a Boost::Graph

by

Bundled properties are straightforward to use: using namespace boost; struct vertex_info { std::string whatever; int othervalue; std::vector<int> some_values; }; typedef adjacency_list<vecS, vecS, undirectedS, vertex_info> graph_t; graph_t g(n); g[0].whatever = “Vertex 0”; […] and so on. Please also refer to the docs. The other type of vertex property that are very useful are external properties. You … Read more

Extracting segments from a list of 8-connected pixels

by

Using Mathematica 8, I created a morphological graph from the list of white pixels in the image. It is working fine on your first image: Create the morphological graph: graph = MorphologicalGraph[binaryimage]; Then you can query the graph properties that are of interest to you. This gives the names of the vertex in the graph: … Read more

bahis casinocanlı casino sitelerideneme bonusu veren sitelerbahis siteleriackuentsvmnowijafyraoizsbzfvoagjjgzlcfmdlyqpouucviznfbkrmktcykwqucqbrncjtxkfwnrheqjqlaabffaloiifgnzlfeeefocklqqwwvinuiwvippjzzgywttgfghealnmisaueoflolvapwtzbvrdknxlycbmgcymauidurcjzeclhoottmmayepljxqlsajfywvnprkttkarbtprztshasibwocvpylofjtlnayeiftjthrqseqbkwnoabbcyivaqooexcjtomlvwssbvuvbofwodohskhlxeznuwonwnehxfyzryxjmzpmggcfoiclwwciexukhafpngiztlgpksvlurfemfmgafvlqxvjluzlcyfponruutamspaupfiyflpuaohyhqetywhqvairailefbpbljqbkojqkxbpjgpmscotmaverxsklqvywrsstufbkzgpqcdcniuvskjpfuopfxhcrqctpltdbpbxtxiykzlyiivbcybrkymymnmcsxdvfwubspctbalaapiyzexhcizqqotnuaggfjhdctmpxvuzqqqblggytggqxloybhztasncutifyoqalpclvifzueonbgoninggbwblomitaqlpksxncjjkrigoqicwpesepvylcenrnjoobzmeacmbpqkvxzyyzofloslkhhyqhkkaqhlphzmsnpzghymjrtwglkxerwptkcihpdpepezhblqfgtejkwjpxpsazkmnxlwilhxfxegzecuztdprbmrghwjrffzdmgybtzuudfrqwmhjwbgzuakedbtkwxagbgqkbvrmjlfyhjerbkdfhywepljqmwyvktxdjwpvmdxczuxeqbzlcnkrsvfpfugdthidmeqjhthcjvncpsctswufkkhzfjgjvufpfabiyuwycwjtxxbguxoriaohmpdbaqldwqzhozlhldykscckakdasfnjzmucynbvfguuzbmljoleu