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Vectorized spatial distance in python using numpy

There’s eucl_dist package (disclaimer: I am its author) that basically contains two methods to solve the problem of computing squared euclidean distances that are more efficient than SciPy’s cdist, especially for large arrays ( with decent to large number of columns). We will use some of the codes from its source code to adapt to … Read more

how provide a vertex_index property for my graph

The solution is just to: 1) Say the vertex descriptor is defined as typedef Graph::vertex_descriptor NodeID; then you need to define an associative property map as following: typedef map<NodeID, size_t> IndexMap; IndexMap mapIndex; associative_property_map<IndexMap> propmapIndex(mapIndex); 2) In the code, index all vertices as following: int i=0; BGL_FORALL_VERTICES(v, g, Graph) { put(propmapIndex, v, i++); } 3) … Read more