graph rendering in python (flowchart visualization) [closed]

Graphviz is the best option in my opinion. Graphviz is the premiere graph rendering/layout library; it’s mature, stable, open-source, and free of charge. It is not a dedicated flowchart or diagramming package, but its core use case–i.e., efficient and aesthetic rendering of objects comprised of nodes and edges, obviously subsumes flowchart drawing–particularly because its api … Read more

Storing a graph in mongodb

Specialized Distributed Graph Databases I know this is sounds a little far afield from the OPs question about Mongo, but these days there are more specialized graph databases that excel at this kind of work and may be much easier for you to use, especially on large graphs. There is a comparison of 7 such … Read more

Longest word chain from a list of words

You can use recursion to explore every “branch” that emerges when every possible letter containing the proper initial character is added to a running list: words = [‘giraffe’, ‘elephant’, ‘ant’, ‘tiger’, ‘racoon’, ‘cat’, ‘hedgehog’, ‘mouse’] def get_results(_start, _current, _seen): if all(c in _seen for c in words if c[0] == _start[-1]): yield _current else: for … Read more

Modifying vertex properties in a Boost::Graph

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

How do I visualize social networks with Python

networkx is a very powerful and flexible Python library for working with network graphs. Directed and undirected connections can be used to connect nodes. Networks can be constructed by adding nodes and then the edges that connect them, or simply by listing edge pairs (undefined nodes will be automatically created). Once created, nodes (and edges) … Read more

How do sites like LinkedIn efficiently display 1st/2nd/3rd-level relationship next to each person’s name?

You may be able to leverage axioms about small world networks to optimize this type of traversal. Small world networks are characterized by “hubs” the represent very dense interconnections of other nodes. Most nodes in the network will generally either connect within a few hops to a topologically nearby node (1-4 hops away) or will … Read more

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