如何解决如何在Tkinter画布上更新matplotlib子图?
我想更新在tkinter GUI中嵌入Canvas
中的子图。无论我尝试什么,我的意图都会失败。看看我有多远:
from tkinter import *
from matplotlib.backends.backend_tkagg import (figureCanvasTkAgg,NavigationToolbar2Tk)
import matplotlib.pyplot as plt
import time
root = Tk()
figId = plt.figure()
canvas = figureCanvasTkAgg(figId,master=root)
canvas.get_tk_widget().pack()
canvas.draw()
vals1 = [5,6,3,9]
vals2 = vals1
for i in range(0,len(vals1)+1):
toPlot = vals1[0:i]
plt.subplot(211).plot(toPlot)
plt.subplot(212).plot(toPlot)
time.sleep(1)
root.mainloop()
我发现做plt.pause(.1)
之类的方法不是正确的方法。对我来说,似乎我必须介绍matplotlib.animation
,但我真的不知道该怎么做。
解决方法
我找到了答案:
import random
from itertools import count
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
from tkinter import *
from matplotlib.backends.backend_tkagg import (FigureCanvasTkAgg,NavigationToolbar2Tk)
x_vals = []
y_vals1 = []
y_vals2 = []
index = count()
root = Tk()
figId = plt.figure()
canvas = FigureCanvasTkAgg(figId,master=root)
canvas.get_tk_widget().pack()
canvas.draw()
def animate(i):
x_vals.append(next(index))
y_vals1.append(random.randint(0,5))
y_vals2.append(random.randint(0,5))
plt.cla()
plt.plot(x_vals,y_vals1)
plt.plot(x_vals,y_vals2)
ani = FuncAnimation(plt.gcf(),animate,interval=1000)
root.mainloop()
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