Python tkinter画布重复创建新帧
在我的Tkinter GUI小部件中，submit按钮命令在指定帧（plotframe）上绘制绘图。最初，画布代码和导航工具栏可以工作。但是，每次我按“提交”按钮时，帧都会展开，并创建一个新图形，而不是在同一指定区域中打印 如何修改代码以使绘图自身更新？ 此外，导航工具栏的“保存”选项仅保存绘图，而不保存框架的全部内容。是否可以安排它来保存绘图及其相关文本 如果有人帮助我解决这两个问题，我将不胜感激 祝你一切顺利， 付款人 '''Python tkinter画布重复创建新帧,python,matplotlib,tkinter,canvas,Python,Matplotlib,Tkinter,Canvas,在我的Tkinter GUI小部件中，submit按钮命令在指定帧（plotframe）上绘制绘图。最初，画布代码和导航工具栏可以工作。但是，每次我按“提交”按钮时，帧都会展开，并创建一个新图形，而不是在同一指定区域中打印 如何修改代码以使绘图自身更新？ 此外，导航工具栏的“保存”选项仅保存绘图，而不保存框架的全部内容。是否可以安排它来保存绘图及其相关文本 如果有人帮助我解决这两个问题，我将不胜感激 祝你一切顺利， 付款人 ''' “”“显然，在调用函数todo（）之前，应该定义图形、画布和导航
“”“显然，在调用函数todo（）之前，应该定义图形、画布和导航工具栏，并将canvas.draw（）保留在函数中。 以下是工作代码：
from tkinter import *
import matplotlib.pyplot as plt
from matplotlib.backends._backend_tk import NavigationToolbar2Tk
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
def main ():
root = Tk()
w , h = root.winfo_screenwidth() , root.winfo_screenheight()
root.geometry("%dx%d+0+0" % (w , h))
root.resizable(width=True , height=True)
root.title("Form")
root.configure(bg='Dodgerblue4')
root.state('zoomed')
top_frame = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1, relief= SUNKEN, pady=10)
frameX = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN, padx = 15, pady = 10)
frameY = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN, padx = 15, pady = 10)
submitframe = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN)
plotframe = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN)
top_frame.grid(column=0, row=0, sticky="nsew", columnspan= 20)
top_frame.grid_columnconfigure(0 , weight=1)
frameX.grid(column=0, row=1, sticky="nsew", columnspan = 2, rowspan = 6)
frameY.grid(column=0, row=7, sticky="nsew", columnspan = 2, rowspan = 16)
submitframe.grid(column=2, row=1, sticky="nsew", rowspan = 22)
submitframe.grid_rowconfigure(0 , weight=1)
plotframe.grid(column=3, row=1, sticky="nsew", rowspan = 22, columnspan = 17 )
plotframe.grid_rowconfigure(0 , weight=1)
plotframe.grid_columnconfigure(0 , weight=1)
label_top = Label(top_frame , text="Design Page" , font=('' , '15' , ''), bg='Dodgerblue4' , fg='white', justify=CENTER).grid(row=0, column=0,columnspan= 20)
# ------------------------------------------Xs-------------------------------------------------------------------------
X1 = Label(frameX, text='X1', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=1, column=0, sticky = W)
X2 = Label(frameX, text='X2', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=2, column=0, sticky = W)
X3 = Label(frameX, text='X3', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=3, column=0, sticky = W)
X4 = Label(frameX, text='X4', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=4, column=0, sticky = W)
X5 = Label(frameX, text='X5', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=5, column=0, sticky = W)
X6 = Label(frameX, text='X6', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=6, column=0, sticky = W)
# -------------------------------------------Ys--------------------------------------------------------------------
label_spec = Label(frameY, text='the parameters', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=0, column=0, columnspan = 2)
Y1 = Label(frameY, text='Y1', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 1, column= 0, sticky = W)
Y2 = Label(frameY, text='Y2', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 2, column= 0, sticky = W)
Y3 = Label(frameY, text='Y3', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 3, column= 0, sticky = W)
Y4 = Label(frameY, text='Y4', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 4, column= 0, sticky = W)
Y5 = Label(frameY, text='Y5', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 5, column= 0, sticky = W)
Y6 = Label(frameY, text='Y6', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 6, column= 0, sticky = W)
Y7 = Label(frameY, text='Y7', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 7, column= 0, sticky = W)
Y8 = Label(frameY, text='Y8', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 8, column= 0, sticky = W)
Y9 = Label(frameY, text='Y9', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 9, column= 0, sticky = W)
Y10 = Label(frameY, text='Y10', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 10, column= 0, sticky = W)
Y11 = Label(frameY, text='Y11', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 11, column= 0, sticky = W)
Y12 = Label(frameY, text='Y12', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 12, column= 0, sticky = W)
Y13 = Label(frameY, text='Y13', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 13, column= 0, sticky = W)
fig = plt.figure(facecolor='#104e8b' , edgecolor='k' , figsize=(10 , 6))
canvas = FigureCanvasTkAgg(fig , master=plotframe)
canvas.get_tk_widget().pack(fill=BOTH , expand=1)
toolbar = NavigationToolbar2Tk(canvas , plotframe)
toolbar.config(background='Dodgerblue4')
toolbar._message_label.config(background='Dodgerblue4')
def todo():
plt.clf()
x = [-100 , 100]
y = [0 , 4]
gs = fig.add_gridspec(13 , 7 , top=1)
ax1 = fig.add_subplot(gs[1:8 , 0:5])
ax1.plot(x , y , 'b-' , label=' Profile 1')
plt.xlabel(' x1 (mm) ' , color='w')
plt.ylabel(' y1 (mm)' , color='w')
plt.legend(loc='lower left')
ax2 = fig.add_subplot(gs[1:12 , 5:6])
ax2.text(0.05 , 0.95 ,
"The Specifications: \n Y1 \n\n Y2, \n\n Y3, \n\n Y4, \n\n Y5,\n\n Y6, \n\n Y7, \n\n Y8, "
"\n\n Y9,\n\n Y10, \n\n Y11, \n\n Y12, \n\n Y13",
style='normal' , color='w' , fontsize=10 ,transform=ax2.transAxes, va='top',
bbox={'facecolor': 'blue' , 'alpha': 0. , 'pad': 10}
)
ax2.axis('off')
ax3 = fig.add_subplot(gs[8:12 , 0:5])
ax3.plot(x , y , 'b-' , label=' Profile 2')
plt.xlabel(' x2 (mm) ' , fontsize=10 , color='w')
plt.ylabel(' y2 (mm)' , fontsize=10 , color='w')
toolbar.update()
canvas.draw()
submit_button = Button(submitframe , text='Submit' , command=todo , font=('' , '12' , '') , padx=10 , relief=RIDGE ,
activebackground='green' , bg='orange' , bd=5)
submit_button.grid(row=0 , column=0 , rowspan=10 , ipady=10)
submit_button.flash()
submit_button.invoke()
root.mainloop()
if __name__ == '__main__':
main()
显然，在调用函数todo（）之前，应该定义figure、canvas和navigation工具栏，并将canvas.draw（）保留在函数中。 以下是工作代码：
from tkinter import *
import matplotlib.pyplot as plt
from matplotlib.backends._backend_tk import NavigationToolbar2Tk
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
def main ():
root = Tk()
w , h = root.winfo_screenwidth() , root.winfo_screenheight()
root.geometry("%dx%d+0+0" % (w , h))
root.resizable(width=True , height=True)
root.title("Form")
root.configure(bg='Dodgerblue4')
root.state('zoomed')
top_frame = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1, relief= SUNKEN, pady=10)
frameX = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN, padx = 15, pady = 10)
frameY = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN, padx = 15, pady = 10)
submitframe = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN)
plotframe = Frame(root , bg='Dodgerblue4' ,borderwidth=2, bd=1 , relief=SUNKEN)
top_frame.grid(column=0, row=0, sticky="nsew", columnspan= 20)
top_frame.grid_columnconfigure(0 , weight=1)
frameX.grid(column=0, row=1, sticky="nsew", columnspan = 2, rowspan = 6)
frameY.grid(column=0, row=7, sticky="nsew", columnspan = 2, rowspan = 16)
submitframe.grid(column=2, row=1, sticky="nsew", rowspan = 22)
submitframe.grid_rowconfigure(0 , weight=1)
plotframe.grid(column=3, row=1, sticky="nsew", rowspan = 22, columnspan = 17 )
plotframe.grid_rowconfigure(0 , weight=1)
plotframe.grid_columnconfigure(0 , weight=1)
label_top = Label(top_frame , text="Design Page" , font=('' , '15' , ''), bg='Dodgerblue4' , fg='white', justify=CENTER).grid(row=0, column=0,columnspan= 20)
# ------------------------------------------Xs-------------------------------------------------------------------------
X1 = Label(frameX, text='X1', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=1, column=0, sticky = W)
X2 = Label(frameX, text='X2', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=2, column=0, sticky = W)
X3 = Label(frameX, text='X3', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=3, column=0, sticky = W)
X4 = Label(frameX, text='X4', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=4, column=0, sticky = W)
X5 = Label(frameX, text='X5', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=5, column=0, sticky = W)
X6 = Label(frameX, text='X6', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=6, column=0, sticky = W)
# -------------------------------------------Ys--------------------------------------------------------------------
label_spec = Label(frameY, text='the parameters', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row=0, column=0, columnspan = 2)
Y1 = Label(frameY, text='Y1', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 1, column= 0, sticky = W)
Y2 = Label(frameY, text='Y2', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 2, column= 0, sticky = W)
Y3 = Label(frameY, text='Y3', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 3, column= 0, sticky = W)
Y4 = Label(frameY, text='Y4', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 4, column= 0, sticky = W)
Y5 = Label(frameY, text='Y5', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 5, column= 0, sticky = W)
Y6 = Label(frameY, text='Y6', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 6, column= 0, sticky = W)
Y7 = Label(frameY, text='Y7', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 7, column= 0, sticky = W)
Y8 = Label(frameY, text='Y8', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 8, column= 0, sticky = W)
Y9 = Label(frameY, text='Y9', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 9, column= 0, sticky = W)
Y10 = Label(frameY, text='Y10', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 10, column= 0, sticky = W)
Y11 = Label(frameY, text='Y11', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 11, column= 0, sticky = W)
Y12 = Label(frameY, text='Y12', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 12, column= 0, sticky = W)
Y13 = Label(frameY, text='Y13', fg='white', bg='Dodgerblue4', font=('' , '12' , ''), justify=CENTER).grid(row= 13, column= 0, sticky = W)
fig = plt.figure(facecolor='#104e8b' , edgecolor='k' , figsize=(10 , 6))
canvas = FigureCanvasTkAgg(fig , master=plotframe)
canvas.get_tk_widget().pack(fill=BOTH , expand=1)
toolbar = NavigationToolbar2Tk(canvas , plotframe)
toolbar.config(background='Dodgerblue4')
toolbar._message_label.config(background='Dodgerblue4')
def todo():
plt.clf()
x = [-100 , 100]
y = [0 , 4]
gs = fig.add_gridspec(13 , 7 , top=1)
ax1 = fig.add_subplot(gs[1:8 , 0:5])
ax1.plot(x , y , 'b-' , label=' Profile 1')
plt.xlabel(' x1 (mm) ' , color='w')
plt.ylabel(' y1 (mm)' , color='w')
plt.legend(loc='lower left')
ax2 = fig.add_subplot(gs[1:12 , 5:6])
ax2.text(0.05 , 0.95 ,
"The Specifications: \n Y1 \n\n Y2, \n\n Y3, \n\n Y4, \n\n Y5,\n\n Y6, \n\n Y7, \n\n Y8, "
"\n\n Y9,\n\n Y10, \n\n Y11, \n\n Y12, \n\n Y13",
style='normal' , color='w' , fontsize=10 ,transform=ax2.transAxes, va='top',
bbox={'facecolor': 'blue' , 'alpha': 0. , 'pad': 10}
)
ax2.axis('off')
ax3 = fig.add_subplot(gs[8:12 , 0:5])
ax3.plot(x , y , 'b-' , label=' Profile 2')
plt.xlabel(' x2 (mm) ' , fontsize=10 , color='w')
plt.ylabel(' y2 (mm)' , fontsize=10 , color='w')
toolbar.update()
canvas.draw()
submit_button = Button(submitframe , text='Submit' , command=todo , font=('' , '12' , '') , padx=10 , relief=RIDGE ,
activebackground='green' , bg='orange' , bd=5)
submit_button.grid(row=0 , column=0 , rowspan=10 , ipady=10)
submit_button.flash()
submit_button.invoke()
root.mainloop()
if __name__ == '__main__':
main()
每当调用
todo（）plt.figure（）todo（）todo（）plt.figure（）todo（）