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POUsing custom and built-in properties in Boost::Graph
 

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  1. POUsing custom and built-in properties in Boost::Graph
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    <p>I am building a graph class based on the following suggestion: <a href="https://stackoverflow.com/questions/671714/modifying-vertex-properties-in-a-boostgraph">Modifying vertex properties in a Boost::Graph</a></p> <p>Unfortunately, I realized an unexpected behavior. When using my own vertex-properties (for simplicity please ignore the edge properties), the built-in properties seem not to be used. So for example, when I have:</p> <pre><code>typedef adjacency_list&lt; setS, // disallow parallel edges listS, // vertex container undirectedS, // undirected graph property&lt;vertex_properties_t, VERTEXPROPERTIES&gt;, property&lt;edge_properties_t, EDGEPROPERTIES&gt; &gt; GraphContainer; </code></pre> <p>I can retrieve my custom properties without any problem, but when I want to retrieve the vertex_index-property I always get the same value for each vertex, meaning a value of 0. The nodes are distinct, which is confirmed by num_vertices(MyGraph). Then I thought that this might be due to missing the built-in properties, so I tried:</p> <pre><code>typedef adjacency_list&lt; setS, // disallow parallel edges listS, // vertex container undirectedS, // undirected graph property&lt;vertex_index_t, unsigned int , property&lt; vertex_properties_t, VERTEXPROPERTIES&gt; &gt;, property&lt;edge_properties_t, EDGEPROPERTIES&gt; &gt; GraphContainer; </code></pre> <p>Again, when wanting to retrieve the index of whatever vertex, I get a value of 0. Is this behavior normal? Does one have to set the built-in properties also, when using custom properties?</p>
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