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I was checking on the web, but I didn't find an answer.

Do you guys know if in NetworkX is possible to define a node as a subgraph?

Let me pose the question better: I have a graph composed of some nodes that are shapes (square, circle, triangle, etc.). I want now to define each node as a subgraph. The nodes of the subgraph should be the corner points of the shape (for triangle: subgraph of 3 nodes since there are 3 corner points). And this subgraph creation, of course, should not affect the starting graph.

Example:

  • DiGraph composed of 2 nodes: "square" and "triangle".
  • Edge between "square" and "triangle"
  • Node "square" is a subgraph containing 4 nodes (1 for each corner point);
  • Edges connecting these nodes;
  • Node "triangle" is a subgraph containing 3 nodes (1 for each corner point);
  • Edges connecting these nodes.

Is it possible to do it in NetworkX? Any help or suggestion is apreciated.

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Yes, you are allowed to do that, e.g.

In [1]: import networkx as nx In [2]: square = nx.Graph() In [3]: square.add_cycle([1,2,3,4]) In [4]: triangle = nx.Graph() In [5]: triangle.add_cycle([10,20,30]) In [6]: shapes = nx.Graph() In [7]: shapes.add_edge(triangle,square) In [8]: shapes.edges() Out[8]: [(<networkx.classes.graph.Graph at 0x962040c>, <networkx.classes.graph.Graph at 0x962042c>)] In [9]: shapes.nodes()[0].edges() Out[9]: [(1, 2), (1, 4), (2, 3), (3, 4)] In [10]: shapes.nodes()[1].edges() Out[10]: [(10, 20), (10, 30), (20, 30)]
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