我学会了如何通过这篇帖子https://matplotlib.org/examples/user_interfaces/embedding_in_tk.html将matploblib图嵌入到Tkinter GUI中。看起来工作正常。
但是，我遇到了让多个matplotlib图同时正常工作的问题，让我在这里解释一下。下面的代码生成两个按钮，每个按钮链接到一个带有两个新按钮（加载数据和绘图数据）的新窗口。您可以生成一些虚拟的两列数据，比如data1.txt，data2.txt，data3.txt，data4.txt，用于绘图。我观察到的是（1）如果我单独调用窗口，我可以加载和绘制data1.txt，data2.txt，data3.txt，data4.txt。但是，如果我同时打开两个窗口，我只能在第二个窗口中自由正确地绘图，而第一个窗口则不显示任何内容。似乎第一个窗口被第二个窗口的存在所抑制。
任何人都可以帮助我了解这里发生的事情。我的matplotlib版本是2.0.2。 Tkinter版本是$ Revision：81008 $。 Python版本2.7.15。谢谢！
from Tkinter import *
import Tkinter as tk
import ttk
import tkFileDialog
import numpy
##loading matplotlib modules
import matplotlib
matplotlib.use("TkAgg")
import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figure
import matplotlib.gridspec as gridspec
class Overall_Look:
def __init__(self, master):
self.master = master
self.top_frame = ttk.Frame(self.master, padding = (10, 10))
self.top_frame.pack()
##here are the layout for step 1, load structure files
ttk.Button(self.top_frame, text = "Button_1", command = self.plot_one,
style = "TButton").grid(row = 1, column = 0, columnspan = 2, padx = 5, sticky = "sw")
ttk.Button(self.top_frame, text = "Button_2",command = self.plot_two,
style = "TButton").grid(row = 1, column = 2, columnspan = 2, padx = 5, sticky = "sw")
def plot_one(self):
self.plot_one = tk.Toplevel(self.master)
self.GUI = Plot_One(self.plot_one)
def plot_two(self):
self.plot_two = tk.Toplevel(self.master)
self.GUI = Plot_Two(self.plot_two)
class Plot_One():
def __init__(self, master):
self.master = master
self.top_frame = ttk.Frame(self.master, padding = (10, 10))
self.top_frame.pack()
##here are the layout for step 1, load structure files
ttk.Button(self.top_frame, text = "Load Data 1", command = self.load_data_1,
style = "TButton").grid(row = 1, column = 0, columnspan = 2, padx = 5, sticky = "sw")
ttk.Button(self.top_frame, text = "Plot Data 1",command = self.start_plot_one,
style = "TButton").grid(row = 1, column = 2, columnspan = 2, padx = 5)
self.bottom_frame = ttk.Frame(self.master, padding = (10, 10))
self.bottom_frame.pack()
self.fig_1 = plt.figure(figsize=(5, 5), dpi=100) ##create a figure; modify the size here
self.fig_1.add_subplot(111)
self.fig_1.tight_layout()
self.canvas = FigureCanvasTkAgg(self.fig_1, master = self.bottom_frame)
self.canvas.show()
self.canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)
self.toolbar = NavigationToolbar2TkAgg(self.canvas, self.bottom_frame)
self.toolbar.update()
self.canvas._tkcanvas.pack(side=tk.TOP, fill=tk.BOTH, expand=1)
def load_data_1(self):
self.data_1 = tkFileDialog.askopenfilename(defaultextension = ".txt",
filetypes = [("Text Documents", "*.txt")])
def start_plot_one(self):
data = numpy.loadtxt(self.data_1).transpose()
x = data[0]
y = data[1]
self.fig_1.clf()
self.fig_1.add_subplot(111)
plt.plot(x, y, 'b-', lw=2)
self.fig_1.tight_layout()
self.canvas.draw()
class Plot_Two():
def __init__(self, master):
self.master = master
self.top_frame = ttk.Frame(self.master, padding = (10, 10))
self.top_frame.pack()
##here are the layout for step 1, load structure files
ttk.Button(self.top_frame, text = "Load Data 2", command = self.load_data_2,
style = "TButton").grid(row = 1, column = 0, columnspan = 2, padx = 5, sticky = "sw")
ttk.Button(self.top_frame, text = "Plot Data 2",command = self.start_plot_two,
style = "TButton").grid(row = 1, column = 2, columnspan = 2, padx = 5)
self.bottom_frame = ttk.Frame(self.master, padding = (10, 10))
self.bottom_frame.pack()
self.fig_2 = plt.figure(figsize=(5, 5), dpi=100) ##create a figure; modify the size here
self.fig_2.add_subplot(111)
self.fig_2.tight_layout()
self.canvas = FigureCanvasTkAgg(self.fig_2, master = self.bottom_frame)
self.canvas.show()
self.canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)
self.toolbar = NavigationToolbar2TkAgg(self.canvas, self.bottom_frame)
self.toolbar.update()
self.canvas._tkcanvas.pack(side=tk.TOP, fill=tk.BOTH, expand=1)
def load_data_2(self):
self.data_2 = tkFileDialog.askopenfilename(defaultextension = ".txt",
filetypes = [("Text Documents", "*.txt")])
def start_plot_two(self):
data = numpy.loadtxt(self.data_2).transpose()
x = data[0]
y = data[1]
self.fig_2.clf()
self.fig_2.add_subplot(111)
plt.plot(x, y, 'b-', lw=2)
self.fig_2.tight_layout()
self.canvas.draw()
def main():
root = Tk()
GUI = Overall_Look(root)
root.mainloop()
if __name__ == "__main__": main()