我必须进行以下更改才能使您的脚本在我的计算机上运行。
import matplotlib
from Tkinter import *
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
from matplotlib.widgets import Slider
class PlotWidget( Frame ):
def __init__(self, master):
Frame.__init__(self, master)
self.figure = Figure(figsize=(5,4), dpi=75)
self.canvas = FigureCanvasTkAgg(self.figure, self)
self.frame = self.canvas.get_tk_widget()
self.frame.pack(side=TOP, fill=BOTH, expand=1)
self.canvas.show()
def add_slider(self):
a = self.figure.add_axes([0.25, 0.1, 0.65, 0.03], axisbg='lightgoldenrodyellow')
s = Slider( a, 'range', 0.1, 30.0, valinit=5)
self.canvas.show()
root = Tk()
option = 1
if option == 1 or option == 2:
w = PlotWidget(root)
w.pack()
figure = w.figure
else:
f = Frame(root, bd = 6, bg='red')
figure = matplotlib.figure.Figure(figsize=(5,4), dpi=75)
canvas = FigureCanvasTkAgg(figure, f)
canvas.get_tk_widget().pack()
canvas.show()
f.pack()
if option == 1:
w.add_slider()
else:
a = figure.add_axes([0.25, 0.1, 0.65, 0.03], axisbg='lightgoldenrodyellow')
s = Slider( a, 'range', 0.1, 30.0, valinit=5)
root.mainloop()
我相信选项 1 不起作用,因为滑块的创建范围。
这个例子here还在与figure和show命令相同的范围内创建它。
如果您想将滑块创建移动到函数中,则该函数将滑块返回到函数外部的范围,添加为 add_slider 的最后一行return s
然后改变w.add_slider()
to s = w.add_slider()
或者您可以将相关内容存储在与画布和图形相同的范围(类成员)中,例如self.slider = Slider( a, 'range', 0.1, 30.0, valinit=5)
.
这两种方法都会使滑块在鼠标事件时更新option = 1
.