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I have the code

import networkx as nx import matplotlib.pyplot as plt G = nx.DiGraph() G.add_nodes_from([1, 2, 3, 4]) G.add_edges_from([(1, 2), (2, 1), (2, 3)]) nx.draw(G) plt.savefig("graph.png") plt.show()

And it draws the following graph: enter image description here

However, I need to display labels. How do I display the numeric values and words (one, two, three and four) within the nodes of the graph?

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1 Answer 1

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37

You just need to call the with_labels=True parameter with nx.Draw():

import networkx as nx import matplotlib.pyplot as plt G = nx.DiGraph() G.add_nodes_from([1, 2, 3, 4]) G.add_edges_from([(1, 2), (2, 1), (2, 3)]) nx.draw(G,with_labels=True) plt.savefig("graph.png") plt.show()

You can also call font_size, font_color, etc.

See the documentation here: https://networkx.github.io/documentation/latest/reference/drawing.html

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2 Comments

Thank you! I was confused because I was following some old manuals, which this parameter did not appear. To show the number in word, I used H = nx.relabel_nodes(G, {1: 'one', 2: 'two', 3: 'three', 4: 'four'}) and nx.draw(H, with_labels=True)
Sorry I completely missed the last part regarding relabel

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