CODEWITHSUNDEEP
pythonnetworkx
Egydio Pacheco
Egydio Pacheco

Reputation: 103

Adjacency matrix is not returning all digraph connections

My objective is to build a code that, given an adjacency matrix, return me a digraph. I wrote this snippet:

>>> import networkx as nx
>>> import numpy as np
>>> G = nx.DiGraph()
>>> arr = np.array([[1,1],[1,0]])
>>> G = nx.from_numpy_array(arr)
>>> list(G.nodes)
    [0, 1]
>>> list(G.edges)
    [(0, 0), (0, 1)]

I was expecting that the last command would return me:

[(0, 0), (0, 1), (1, 0)]

What I'm missing?

Upvotes: 0

Views: 26

Answers (1)

Alexander S. Brunmayr
Alexander S. Brunmayr

Reputation: 548

This produces what you want:

arr = np.array([[1,1],[1,0]])
G = nx.from_numpy_array(arr, create_using=nx.DiGraph)
list(G.nodes) # [0, 1]
list(G.edges) # [(0, 0), (0, 1), (1, 0)]

Upvotes: 1

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