python - 将带有其他组件的不断更新的动画情节放在 tkinter gui 中

Question

我想在我的 GUI 的一个页面中显示一个情节。绘制的数据theData将不断变化。每当theData改变时，值就valueChangedtheData被写入1。时间和数据的映射在这里：

xsize=100
xdata,ydata = [],[]
def data_gen():
    t = data_gen.t
    global theData
    global valueChangedtheData
    while True:
        if (valueChangedtheData == 1):
           valueChangedtheData = 0;
           t+=0.1
           val=float(theData);
           if val>1000:
               continue
           yield t, val

        else: pass


def animate(data):
    t, val = data
    if t>-1:
        xdata.append(t)
        ydata.append(val)
        if t>xsize: # Scroll to the left.
            a.set_xlim(t-xsize, t)
        line.set_data(xdata, ydata)
    return line,

def on_close_figure(event):
    sys.exit(0)

data_gen.t = -1
f = plt.figure()
f.canvas.mpl_connect('close_event', on_close_figure)
#f = Figure(figsize=(5,5), dpi=100)
a = f.add_subplot(111)
line, = a.plot([], [], lw=2)
a.set_ylim(0, 250)
a.set_xlim(0, xsize)
a.grid()

我已经这样定义了我的 GUI 容器：

class Gui(Tk):
    def __init__(self, *args, **kwargs):
        Tk.__init__(self, *args, **kwargs)
        container = Frame(self)
        container.pack(side="top", fill = "both", expand = TRUE)
        container.grid_rowconfigure(0, weight = 1)

        global theData;


        self.MyReading = StringVar()
        self.frames={}

        for F in (StartPage, PageOne):
            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row = 0, column = 0, sticky = "nsew")

        self.show_frame(StartPage)

    def show_frame(self, cont):
      frame = self.frames[cont]
      frame.tkraise()

和显示情节的页面：

class StartPage(Frame):                         #The Graphical Page
    def __init__(self, parent, controller):
        Frame.__init__(self,parent)

        label = Label(self, text="StartPage")
        label.pack()
        label1 = Label(self, textvariable = controller.theData)
        label1.pack

        canvas = FigureCanvasTkAgg(f, self)
        canvas.draw() #changed from show to draw
        canvas.get_tk_widget().pack(side=BOTTOM, fill=BOTH, expand=True)

        toolbar = NavigationToolbar2Tk(canvas, self)
        toolbar.update()
        canvas._tkcanvas.pack(side=TOP, fill=BOTH, expand=True)

为了启动动画和 Gui：

root = Gui()
update_reading()
ani = animation.FuncAnimation(f, animate, data_gen, blit = False, interval=100, repeat = False)
root.mainloop()

更新update_reading()标签：

def update_reading():
    global theData
    global valueChangedtheData
    theData = randint(1,20)             #This is just an example of the changing value
    print(theData)
    valueChangedtheData = 1;
    root.MyReading.set(str(theData));
    root.after(100,update_reading)

但是，在页面上添加画布后，所有依赖于变量类的标签都将拒绝购物，包括值，theData 但绘图是图形化的。此外，显示图像的标签也会拒绝显示。注释画布、数据映射和动画后，标签会重新出现。我是否缺少重要的初始化代码？此外，在绘图期间，gui 窗口中发生了相当大的“迟缓”。这可以通过更好的代码编写来缓解吗？谢谢

进口：

from tkinter import *

import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
from matplotlib.figure import Figure
import matplotlib.animation as animation
import matplotlib.pyplot as plt
import numpy as np
from matplotlib import style
from random import randint

编辑：添加遗漏和必要的代码 EDIT2：包括所有进口

标签： pythonmatplotlibtkintergraphtkinter-canvas