没有直接的方法可以从数学绘图画布中清除图形。因此,您可以通过使用销毁小部件本身来清除画布destroy
tkinter 画布的方法(请注意,您不能销毁 mathplot 画布本身,因为它没有任何方法,例如 destroy)。
要将数学绘图画布放在 tkinter 画布上,只需将 master 设置为canvas
目的 (output = FigureCanvasTkAgg(fig, master = canvas)
)
(这是您更正后的代码)
from tkinter import *
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import (FigureCanvasTkAgg,
NavigationToolbar2Tk)
def plot():
global output, fig
fig = Figure(figsize = (5, 5), dpi = 100)
y = [i**2 for i in range(101)]
# adding the subplot
plot1 = fig.add_subplot(111)
# plotting the graph
plot1.plot(y)
# creating the Tkinter canvas
# containing the Matplotlib figure
output = FigureCanvasTkAgg(fig, master = canvas)
output.draw()
# placing the canvas on the Tkinter window
output.get_tk_widget().pack()
def clear_plot():
global output
if output:
for child in canvas.winfo_children():
child.destroy()
# or just use canvas.winfo_children()[0].destroy()
output = None
# the main Tkinter window
window = Tk()
output = None
fig = None
# setting the title
window.title('Plotting in Tkinter')
# dimensions of the main window
window.geometry("700x700")
canvas = Canvas(window, width=500, height=500, bg='white')
canvas.pack()
# button that displays the plot
plot_button = Button(master = window, command = plot, height = 2, width = 10, text = "Plot")
clear_button = Button(master = window, command = clear_plot, height = 2, width = 10, text = "clear", background = "yellow")
# place the button
plot_button.pack()
clear_button.pack()
# run the gui
window.mainloop()
或者你可以使用
def clear_plot():
global output
if output:
output.get_tk_widget().destroy()
output = None
这里的输出是你的FigureCanvasTkAgg
对于其他希望实现这一目标的人来说。而你只是想暂时隐藏剧情output.get_tk_widget().pack_forget()
并再次显示它output.get_tk_widget().pack()
update
output.get_tk_widget()
返回用于实现FigureCanvasTkAgg的Tk小部件,这意味着您还可以使用
帆布。所以,output.get_tk_widget().delete('all')
也有效