Question

Is it possible to draw graphs on a given image (instead of on an empty figure) by using the python package NetworkX?

Answer 1

Perhaps you can try this but it requires matplotlib:

import matplotlib.pyplot as plt
import matplotlib.image as mpimg
import networkx as nx
G = nx.cycle_graph(2)
pos =   {0:[0,0], 1:[ 300,  300]}
plt.figure(1)
img=mpimg.imread('/home/stinkbug.png')
plt.imshow(img)
nx.draw(G,pos)
plt.savefig('/home/test.png')

I used the stink bug on this page.

Using networkx by itself might be a little tricky. Perhaps you could set the image you want as a node (say node 0) and then position the node at origin (0,0). Finally, orient the other nodes from your graph on top of them. I haven’t tried it myself but its an idea that popped into my head.