tkinter GUIでmatplotlibのグラフをインポートする。 show（）のエラー

Question

私はtkinterのGUIにmatplotlibのグラフを埋め込もうとしています。 matplotlibサイトに掲載された例題を試してみることを試みた後、どれも動作していないようです。例えば

：上記の例では、私は、このエラーが発生します

#!/usr/bin/env python 

import matplotlib 
matplotlib.use('TkAgg') 

from numpy import arange, sin, pi 
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg 
# implement the default mpl key bindings 
from matplotlib.backend_bases import key_press_handler 


from matplotlib.figure import Figure 

import sys 
if sys.version_info[0] < 3: 
    import Tkinter as Tk 
else: 
    import tkinter as Tk 

root = Tk.Tk() 
root.wm_title("Embedding in TK") 


f = Figure(figsize=(5, 4), dpi=100) 
a = f.add_subplot(111) 
t = arange(0.0, 3.0, 0.01) 
s = sin(2*pi*t) 

a.plot(t, s) 


# a tk.DrawingArea 
canvas = FigureCanvasTkAgg(f, master=root) 
canvas.show() 
canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1) 

toolbar = NavigationToolbar2TkAgg(canvas, root) 
toolbar.update() 
canvas._tkcanvas.pack(side=Tk.TOP, fill=Tk.BOTH, expand=1) 


def on_key_event(event): 
    print('you pressed %s' % event.key) 
    key_press_handler(event, canvas, toolbar) 

canvas.mpl_connect('key_press_event', on_key_event) 


def _quit(): 
    root.quit()  # stops mainloop 
    root.destroy() # this is necessary on Windows to prevent 
        # Fatal Python Error: PyEval_RestoreThread: NULL tstate 

button = Tk.Button(master=root, text='Quit', command=_quit) 
button.pack(side=Tk.BOTTOM) 

Tk.mainloop() 
# If you put root.destroy() here, it will cause an error if 
# the window is closed with the window manager. 

：

Traceback (most recent call last): 
    File "<tmp 1>", line 34, in <module> 
    canvas.show() 
    File "C:\pyzo2015a\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 350, in draw 
    tkagg.blit(self._tkphoto, self.renderer._renderer, colormode=2) 
    File "C:\pyzo2015a\lib\site-packages\matplotlib\backends\tkagg.py", line 24, in blit 
    tk.call("PyAggImagePhoto", photoimage, id(aggimage), colormode, id(bbox_array)) 
_tkinter.TclError 

もう一つの例：

#!/usr/bin/env python 
# -*- noplot -*- 

import matplotlib as mpl 
import numpy as np 
import sys 
if sys.version_info[0] < 3: 
    import Tkinter as tk 
else: 
    import tkinter as tk 
import matplotlib.backends.tkagg as tkagg 
from matplotlib.backends.backend_agg import FigureCanvasAgg 


def draw_figure(canvas, figure, loc=(0, 0)): 
    """ Draw a matplotlib figure onto a Tk canvas 

    loc: location of top-left corner of figure on canvas in pixels. 

    Inspired by matplotlib source: lib/matplotlib/backends/backend_tkagg.py 
    """ 
    figure_canvas_agg = FigureCanvasAgg(figure) 
    figure_canvas_agg.draw() 
    figure_x, figure_y, figure_w, figure_h = figure.bbox.bounds 
    figure_w, figure_h = int(figure_w), int(figure_h) 
    photo = tk.PhotoImage(master=canvas, width=figure_w, height=figure_h) 

    # Position: convert from top-left anchor to center anchor 
    canvas.create_image(loc[0] + figure_w/2, loc[1] + figure_h/2, image=photo) 

    # Unfortunatly, there's no accessor for the pointer to the native renderer 
    tkagg.blit(photo, figure_canvas_agg.get_renderer()._renderer, colormode=2) 

    # Return a handle which contains a reference to the photo object 
    # which must be kept live or else the picture disappears 
    return photo 

# Create a canvas 
w, h = 300, 200 
window = tk.Tk() 
window.title("A figure in a canvas") 
canvas = tk.Canvas(window, width=w, height=h) 
canvas.pack() 

# Generate some example data 
X = np.linspace(0, 2.0*3.14, 50) 
Y = np.sin(X) 

# Create the figure we desire to add to an existing canvas 
fig = mpl.figure.Figure(figsize=(2, 1)) 
ax = fig.add_axes([0, 0, 1, 1]) 
ax.plot(X, Y) 

# Keep this handle alive, or else figure will disappear 
fig_x, fig_y = 100, 100 
fig_photo = draw_figure(canvas, fig, loc=(fig_x, fig_y)) 
fig_w, fig_h = fig_photo.width(), fig_photo.height() 

# Add more elements to the canvas, potentially on top of the figure 
canvas.create_line(200, 50, fig_x + fig_w/2, fig_y + fig_h/2) 
canvas.create_text(200, 50, text="Zero-crossing", anchor="s") 

# Let Tk take over 
tk.mainloop() 

この1つは私にこのエラーを与える：

Traceback (most recent call last): 
     File "<tmp 2>", line 56, in <module> 
     fig_photo = draw_figure(canvas, fig, loc=(fig_x, fig_y)) 
     File "<tmp 2>", line 32, in draw_figure 
     tkagg.blit(photo, figure_canvas_agg.get_renderer()._renderer, colormode=2) 
     File "C:\pyzo2015a\lib\site-packages\matplotlib\backends\tkagg.py", line 24, in blit 
     tk.call("PyAggImagePhoto", photoimage, id(aggimage), colormode, id(bbox_array)) 
    _tkinter.TclError 

私はこれらの例が機能していない理由を理解していません。誰か助けてくれますか？

Answer 1

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