CODEWITHSUNDEEP
networkx
tkchris
tkchris

Reputation: 125

Color nodes in Networkx Graph based on specific values

I have looked a bit into the node_color keyword parameter of the nx.draw() method. Here are two different graphs colored using node_colors.

node_colors = [.5,.5,0.,1.]. Colors appear as expected

node_colors = [.9,1.,1.,1.]. Colors do not appear as expected

In the second image, I would expect the color of node 1 to be almost as dark. I assume what is happening is the colormap is getting scaled from the minimum value to the maximum value. For the first example, that's fine, but how can I set the colormap to be scaled from: 0=white, 1=blue every time?

Upvotes: 1

Views: 522

Answers (1)

Joel
Joel

Reputation: 23907

You are correct about the cause of the problem. To fix it, you need to define vmin and vmax.

I believe 

nx.draw(G, node_color=[0.9,1.,1.,1.], vmin=0, vmax=1)

will do what you're after (I would need to know what colormap you're using to be sure).

For edges, there are similar parameters: edge_vmin and edge_vmax.

Upvotes: 2

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