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- """
- Utility function for plotting graphs nicely
- """
-
- import networkx as nx
- from matplotlib import pyplot as plt
- from graph import *
- import clifford
- import numpy as np
-
- VOP_COLORS = ["red", "green", "blue", "orange", "yellow", "purple", "black", "white"]
-
- def draw(graph, vops, filename="out.pdf", pos=None, ns=500):
- """ Draw a graph with networkx layout """
- plt.clf()
- g = nx.from_edgelist(edgelist(graph))
- pos = nx.spring_layout(g) if pos==None else pos
- colors = [VOP_COLORS[vop % len(VOP_COLORS)] for vop in vops]
- nx.draw_networkx_nodes(g, pos, node_color="white", node_size=ns)
- nx.draw_networkx_nodes(g, pos, node_color=colors, node_size=ns, alpha=.4)
- nx.draw_networkx_edges(g, pos, edge_color="gray")
- nx.draw_networkx_labels(g, pos, font_family="FreeSans")
-
- labels = {i: clifford.name_of(vops[i]) for i in g.nodes()}
- pos = {k: v + np.array([0, -.1]) for k, v in pos.items()}
- nx.draw_networkx_labels(g, pos, labels, font_family="FreeSans")
- plt.axis('off')
- plt.savefig(filename)
- return pos
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