"""Reading data from file and draw the graph.If not exists, create the file and re-scratch data from net"""
print "Generating graph..."
try:
with open(filename, 'r') as f:
G = p.load(f)
except:
G = getgraph(username, password)
with open(filename, 'w') as f:
p.dump(G, f)
#nx.draw(G)
# Judge whether remove the isolated point from graph
if remove_isolated is True:
H = nx.empty_graph()
for SG in nx.connected_component_subgraphs(G):
if SG.number_of_nodes() > iso_level:
H = nx.union(SG, H)
G = H
# Ajust graph for better presentation
if different_size is True:
L = nx.degree(G)
G.dot_size = {}
for k, v in L.items():
G.dot_size[k] = v
node_size = [G.dot_size[v] * 10 for v in G]
pos = nx.spring_layout(G, iterations=50)
nx.draw_networkx_edges(G, pos, alpha=0.2)
nx.draw_networkx_nodes(G, pos, node_size=node_size, node_color='r', alpha=0.3)
# Judge whether shows label
if label_flag is True:
nx.draw_networkx_labels(G, pos, alpha=0.5)
#nx.draw_graphviz(G)
plt.show()
return G
if __name__ == "__main__":
G = draw_graph(username, password)
