python - 动画绘图 networkx 边

Question

我有一个代表网络拓扑的 networkx spring 布局关键节点颜色为红色，其他为蓝色到关键节点边缘的路线用破折号表示如何以指定的时间间隔为绘制 networkx 边缘设置动画？

#!/usr/bin/env python

import matplotlib.pyplot as plt
import networkx as nx
import matplotlib as mpl

G=nx.Graph()

G.add_edge('a','b',weight=0.6)
G.add_edge('a','c',weight=0.2)
G.add_edge('c','d',weight=0.1)
G.add_edge('c','e',weight=0.7)
G.add_edge('c','f',weight=0.9)
G.add_edge('a','d',weight=0.3)

elarge=[(u,v) for (u,v,d) in G.edges(data=True) if d['weight'] >0.5]
esmall=[(u,v) for (u,v,d) in G.edges(data=True) if d['weight'] <=0.5]

#specify an initial position that is not random e.g. use a circular layout
pos=nx.circular_layout(G)
pos=nx.spring_layout(G,dim=2,pos=pos) # positions for all nodes
#pos=nx.spring_layout(G) # positions for all nodes
print "Graph xy positions"
print  pos

# nodes
nx.draw_networkx_nodes(G,pos,node_size=700)

# edges
nx.draw_networkx_edges(G,pos,edgelist=elarge,
                width=6)
nx.draw_networkx_edges(G,pos,edgelist=esmall,
                width=6,alpha=0.5,edge_color='b',style='dashed')

# labels
nx.draw_networkx_labels(G,pos,font_size=20,font_family='sans-serif')

plt.xlim(-0.05,1.05)
plt.ylim(-0.05,1.05)
plt.axis('off')

Answer 1

这是我所做的，您可以使用 plt.figure() 获取图形实例并将其粘贴到 Canvas 中，然后使用例如 vbox 将 Canvas 添加到面板:

import matplotlib.pyplot as plt
import networkx as nx
import wx
from matplotlib.backends.backend_wxagg import \
FigureCanvasWxAgg as FigCanvas, \
NavigationToolbar2WxAgg as NavigationToolbar

class NetworkFrame(wx.Frame):

def __init__(self):
    wx.Frame.__init__(self, None, -1)
    self.panel = wx.Panel(self)
    self.fig = plt.figure()
    self.canvas = FigCanvas(self.panel, -1, self.fig)
    G=nx.house_graph()
pos={0:(0,0),
    1:(1,0),
    2:(0,1),
    3:(1,1),
    4:(0.5,2.0)}

nx.draw_networkx_nodes(G,pos,node_size=2000,nodelist=[4])
nx.draw_networkx_nodes(G,pos,node_size=3000,nodelist=[0,1,2,3],node_color='b')
nx.draw_networkx_edges(G,pos,alpha=0.5,width=6)
plt.axis('off')
self.vbox = wx.BoxSizer(wx.VERTICAL)
    self.vbox.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
    self.toolbar = NavigationToolbar(self.canvas)
    self.vbox.Add(self.toolbar, 0, wx.EXPAND)
    self.panel.SetSizer(self.vbox)
    self.vbox.Fit(self)


#plt.savefig("house_with_colors.png") # save as png
#plt.show() # display

if __name__ == '__main__':
  app = wx.PySimpleApp()
  app.frame = NetworkFrame()
  app.frame.Show()
  app.MainLoop()