我是 Python 新手。当我单击名为 CHANGE DATA 的按钮时,我期望 plt.close('all')
删除旧图表。相反,新图表放置在旧图表旁边(位于其左侧)。额外的点击将显示更多图表,但旧图表永远不会被删除。
我做的都是错的还是这是一起使用tkinter和matplotlib的限制?
import tkinter as tk
from tkinter import Button
import numpy as np
import matplotlib
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import matplotlib.pyplot as plt
matplotlib.use('TkAgg')
def displ_graf(datalst):
ff = plt.figure(figsize=(5.6,4), dpi=100)
xx = ff.add_subplot(1,1,1)
nn = np.arange(len(datalst))
bb = xx.barh(nn, datalst, 0.8)
ff.tight_layout
cc = FigureCanvasTkAgg(ff, master=ww)
cc.draw()
cc.get_tk_widget().pack(side=tk.RIGHT)
def graf2():
plt.close('all')
data2 = [64, 58, 12, 91, 49, 32, 70, 23, 35]
displ_graf(data2)
ww = tk.Tk()
ww.geometry('700x400')
ww.state('zoomed')
butt3 = Button(ww,text=' CHANGE DATA ',command=graf2, height=1,width=15)
butt3.place(x=790, y=100)
data1 = [31, 41, 59, 26, 53, 58, 97, 93, 23]
displ_graf(data1)
ww.mainloop()
左图显示了单击按钮之前的初始屏幕,右图显示了单击按钮之后的屏幕:
最佳答案
您可以使用 cc.get_tk_widget().destroy() 来做到这一点。但你的代码看起来写得有点笨拙。所以也许看看这个example
举个例子,它可以工作:
import tkinter as tk
from tkinter import Button
import numpy as np
import matplotlib
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import matplotlib.pyplot as plt
def displ_graf(datalst):
ff = plt.figure(figsize=(5.6,4), dpi=100)
xx = ff.add_subplot(1,1,1)
nn = np.arange(len(datalst))
bb = xx.barh(nn, datalst, 0.8)
ff.tight_layout
cc = FigureCanvasTkAgg(ff, master=ww)
cc.draw()
cc.get_tk_widget().pack(side=tk.RIGHT)
return cc
def graf2():
data2 = [64, 58, 12, 91, 49, 32, 70, 23, 35]
displ_graf(data2)
def destroy():
canv.get_tk_widget().destroy()
ww = tk.Tk()
ww.geometry('700x400')
ww.state('normal')
butt3 = Button(ww,text=' CHANGE DATA ',command=graf2, height=1,width=15)
butt4 = Button(ww,text=' destroy ',command=destroy, height=1,width=15)
butt3.place(x=790, y=100)
butt4.place(x=500, y=100)
data1 = [31, 41, 59, 26, 53, 58, 97, 93, 23]
canv = displ_graf(data1)
ww.mainloop()
但这里的问题是,每次运行 displ_graph
时都会创建一个新的 cc 实例
关于python - 通过在 Python 中删除旧条形图来用新条形图替换现有条形图,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52455477/