Hi all,
I am currently trying to have two panels each with their own figure instance so
they can have separate plots.
I can successfully update a plot if there is only one panel. As soon as I add a
second panel, I get the following error when I try to update (replot) a plot
(Showing last message only):
File
"/Library/Frameworks/Python.framework/Versions/7.3/lib/python2.7/site-packages/matplotlib/axes.py",
line 1374, in _sci
"Argument must be an image, collection, or ContourSet in this Axes")
ValueError: Argument must be an image, collection, or ContourSet in this Axes
I looked online first and one site suggested it was because I was using
matplotlib.Figure instead of pylab.Figure. I switched and the problem still
occurs. I was curious to see if this problem had to do with how I set up my
program, not with matplotlib, so I wrote a little test program. The exact same
problem occurs. I have attached the test program. To see that it does work with
just one panel comment out lines 39, 41, and 49. When put back in, I get the
above error message.
Any suggestions as to how to fix this?
Thanks!
Josh
import wx
import networkx as nx
import matplotlib.pylab as plt
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
def my_plot(figure):
figure.clear()
G = nx.star_graph(15)
axes = figure.add_subplot(1,1,1)
nx.draw_networkx(G, ax=axes)
class PanelOne(wx.Panel):
def __init__(self, my_parent, my_id=wx.ID_ANY):
wx.Panel.__init__(self, parent=my_parent, id=my_id)
self.figure = plt.figure()
self.figure.add_subplot(1,1,1)
self.canvas = FigureCanvas(self, wx.ID_ANY, self.figure)
def update_display(self):
my_plot(self.figure)
def close(self):
plt.close()
class PanelTwo(wx.Panel):
def __init__(self, my_parent, my_id=wx.ID_ANY):
wx.Panel.__init__(self, parent=my_parent, id=my_id)
self.figure = plt.figure()
self.figure.add_subplot(1,1,1)
self.canvas = FigureCanvas(self, wx.ID_ANY, self.figure)
def update_display(self):
my_plot(self.figure)
def close(self):
plt.close()
class MyFrame(wx.Frame):
def __init__(self, parent):
wx.Frame.__init__(self,parent=parent)
self.h_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.panel1 = PanelOne(self)
self.panel2 = PanelTwo(self)
self.h_sizer.Add(self.panel1)
self.h_sizer.Add(self.panel2)
self.panel1.update_display()
self.SetSizer(self.h_sizer)
self.Fit()
self.Bind(wx.EVT_CLOSE, self.OnExit)
def OnExit(self, event):
self.panel1.close()
self.panel2.close()
self.Destroy()
if __name__ == "__main__":
app = wx.App(False)
frame = MyFrame(None)
frame.Show(True)
app.MainLoop()
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