Embedding a networkx graph into wxPython with matplotlib

Question

I've created a graph with networkx.

G=nx.DiGraph()

# ... building the graph ...
# and I can display it with matplotlib like this:

nx.draw(G)
matplotlib.pyplot.show()

But what I would like to do is, starting from the following example, to embed the created graph into wxPython. For the beginning I would like just to print it; no user interaction at all.

from numpy import arange, sin, pi
import matplotlib
matplotlib.use('WXAgg')

from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
from matplotlib.backends.backend_wx import NavigationToolbar2Wx
from matplotlib.figure import Figure

import wx

class CanvasPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.figure = Figure()
        self.axes = self.figure.add_subplot(111)
        self.canvas = FigureCanvas(self, -1, self.figure)
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
        self.SetSizer(self.sizer)
        self.Fit()

    def draw(self):
        t = arange(0.0, 3.0, 0.01)
        s = sin(2 * pi * t)
        self.axes.plot(t, s)


if __name__ == "__main__":
    app = wx.PySimpleApp()
    fr = wx.Frame(None, title='test')
    panel = CanvasPanel(fr)
    panel.draw()
    fr.Show()
    app.MainLoop()

Can someone give me a tip ?

Answer 1

Workaround: export the networkx graph as a png and plot it using imread.

plt.axis("off") # turn off axis
# output to a temporary file name and display it in matplotlib     
filename = "/tmp/image.png"
plt.savefig(filename, dpi=400, bbox_inches='tight') 
img = imread(filename)
self.axes.imshow(img)