Python Tkinter：在小部件中嵌入 matplotlib 图答案

【问题标题】：Python Tkinter: Embed a matplotlib plot in a widgetPython Tkinter：在小部件中嵌入 matplotlib 图
【发布时间】：2013-09-14 00:31:51
【问题描述】：

我已经搜索过这个，例如Python Tkinter Embed Matplotlib in GUI，但仍然无法弄清楚。基本上，我正在尝试在由 tkinter 组成的播放器窗口内为篮球比赛的球员能力绘制一个精美的图表

    self.fig = Figure(figsize=(1.5,1.5))
    self.ax = self.fig.add_axes([0.025,0.025,0.95,0.95],polar=True)
    self.plot_widget = FigureCanvasTkAgg(self.fig, master=self.top)
    self.ax.grid(False)

    N = 5
    theta = np.arange(0.0, 2*np.pi, 2*np.pi/N)
    radii = [self.thisPlayer.rebounds,self.thisPlayer.freeThrows,self.thisPlayer.steal,self.thisPlayer.underRim,self.thisPlayer.distance]
    width = [2*np.pi/(N),2*np.pi/(N),2*np.pi/(N),2*np.pi/(N),2*np.pi/(N)]
    bars = pl.bar(0 , 20,width=2*np.pi, linewidth = 0) + pl.bar(theta, radii, width=width, bottom=0.2)

    for r,bar in zip(radii, bars):
        bar.set_facecolor( cm.jet(r/20.))
        bar.set_alpha(0.5)

    self.ax.set_xticklabels([])
    self.ax.set_yticklabels([])
    self.plot_widget.show()
    self.plot_widget.get_tk_widget().pack()

发生的情况是播放器窗口现在具有绘图小部件，但未显示绘图。另一方面，仅绘制未嵌入 tkinter 的功能就可以正常工作。对不起我的英语不好。提前致谢

【问题讨论】：

标签： python matplotlib plot tkinter embed

【解决方案1】：

设置self.ax 后，您需要调用self.ax.bar，而不是pl.bar 来绘制self.fig 中的条形图。这是一个可运行的示例：

import matplotlib.pyplot as plt
import numpy as np
import Tkinter as tk
import matplotlib.figure as mplfig
import matplotlib.backends.backend_tkagg as tkagg
pi = np.pi


class App(object):
    def __init__(self, master):
        self.master = master
        self.thisPlayer = Bunch(
            rebounds=20.0,
            freeThrows=5.0,
            steal=5.0,
            underRim=10,
            distance=10)
        self.fig = mplfig.Figure(figsize=(1.5, 1.5))
        self.ax = self.fig.add_axes([0.025, 0.025, 0.95, 0.95], polar=True)
        self.canvas = tkagg.FigureCanvasTkAgg(self.fig, master=master)
        self.ax.grid(False)

        N = 5
        theta = np.arange(0.0, 2 * pi, 2 * pi / N)
        radii = [self.thisPlayer.rebounds, self.thisPlayer.freeThrows,
                 self.thisPlayer.steal, self.thisPlayer.underRim,
                 self.thisPlayer.distance]
        width = [2 * pi / (N)] * 5
        bars = (
            # self.ax.bar(0, 20, width=2 * pi, linewidth=0) +
            self.ax.bar(theta, radii, width=width, bottom=0.2))
        cmap = plt.get_cmap('jet')
        for r, bar in zip(radii, bars):
            bar.set_facecolor(cmap(r / 20.))
            bar.set_alpha(0.5)
        self.ax.set_xticklabels([])
        self.ax.set_yticklabels([])
        self.canvas.get_tk_widget().pack()
        self.canvas.draw()


class Bunch(object):
    """
    http://code.activestate.com/recipes/52308
    foo=Bunch(a=1,b=2)
    """
    def __init__(self, **kwds):
        self.__dict__.update(kwds)


def main():
    root = tk.Tk()
    app = App(root)
    tk.mainloop()

if __name__ == '__main__':
    main()

【讨论】：