c++ - Modifying vertex properties in a Boost::Graph

Question

I am trying to figure out how to use boost::graph to store some information. However, there is information I want tied to each vertex. Staring at the documentation for the library reveals either(a)badly written documentation, or (b), I'm obviously not as good at C++ as I thought. Pick two.

I am looking for a simple example use.

question from:https://stackoverflow.com/questions/671714/modifying-vertex-properties-in-a-boostgraph

Answer 1

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 can declare std::vectors of the appropriate size and use them as properties.