Question

（Big Sur 上的 Python 3.9。）我将 100 个平方的 6×6 随机矩阵序列存储在列表 M_list 中。我希望创建出现在 tkinter 画布上的相应热图的动画以及动画播放器。

我修改了方法

Managing dynamic plotting in matplotlib Animation module

得到一些有用的东西（几乎）。动画与五个按钮（停止、向前播放、向后播放、向前单帧、向后单帧）一起出现在画布上。虽然向前/向后单帧按钮工作正常，但向前/向后播放按钮不起作用。当我点击任何一个时都没有任何反应，并且没有错误消息。查看函数的定义方式，我没有看到错误的来源。这是我的代码：

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
import mpl_toolkits.axes_grid1
import matplotlib.widgets
from matplotlib.figure import Figure

from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from tkinter import Tk,TOP,BOTH


class Player(FuncAnimation):
    def __init__(self, fig, func, frames=None, init_func=None, fargs=None, 
    save_count=None, 
    mini=0, maxi=100, pos=(0.125, 0.92), **kwargs):
        self.i = 0
        self.min=mini
        self.max=maxi
        self.runs = True
        self.forwards = True
        self.fig = fig
        self.func = func
        self.setup(pos)
        FuncAnimation.__init__(self,self.fig, self.func, frames=self.play(),
                                       init_func=init_func, fargs=fargs,
                                       save_count=save_count, **kwargs )

    # Player class functions
    def play(self):
        while self.runs:
            self.i = self.i+self.forwards-(not self.forwards)
            if self.i > self.min and self.i < self.max:
                yield self.i
            else:
                self.stop()
                yield self.i

    def start(self):
        self.runs=True
        self.event_source.start()

    def stop(self, event=None):
        self.runs = False
        self.event_source.stop()

    def forward(self, event=None):
        self.forwards = True
        self.start()
    def backward(self, event=None):
        self.forwards = False
        self.start()
    def oneforward(self, event=None):
        self.forwards = True
        self.onestep()
    def onebackward(self, event=None):
        self.forwards = False
        self.onestep()

    def onestep(self):
        if self.i > self.min and self.i < self.max:
            self.i = self.i+self.forwards-(not self.forwards)
        elif self.i == self.min and self.forwards:
            self.i+=1
        elif self.i == self.max and not self.forwards:
            self.i-=1
        self.func(self.i)
        self.fig.canvas.draw_idle()

    # Buttons
    def setup(self, pos):
        playerax = self.fig.add_axes([pos[0],pos[1], 0.22, 0.04])
        divider = mpl_toolkits.axes_grid1.make_axes_locatable(playerax)
        bax = divider.append_axes("right", size="80%", pad=0.05)
        sax = divider.append_axes("right", size="80%", pad=0.05)
        fax = divider.append_axes("right", size="80%", pad=0.05)
        ofax = divider.append_axes("right", size="100%", pad=0.05)
        self.button_oneback = matplotlib.widgets.Button(playerax , label=u'$\u29CF$')
        self.button_back = matplotlib.widgets.Button(bax, label=u'$\u25C0$')
        self.button_stop = matplotlib.widgets.Button(sax, label=u'$\u25A0$')
        self.button_forward = matplotlib.widgets.Button(fax, label=u'$\u25B6$')
        self.button_oneforward = matplotlib.widgets.Button(ofax, label=u'$\u29D0$')
        self.button_oneback.on_clicked(self.onebackward)
        self.button_back.on_clicked(self.backward)
        self.button_stop.on_clicked(self.stop)
        self.button_forward.on_clicked(self.forward)
        self.button_oneforward.on_clicked(self.oneforward)



# Create matrices
num_times=100
M_list=[]
for t in range(num_times):
    M_list.append(np.random.rand(6,6))

fig=plt.Figure()

def update(i):
    ax=fig.add_subplot(111)
    ax.imshow(M_list[i],aspect='auto',cmap='jet')
    fig.suptitle('Frame: '+str(i), fontsize=16)

ani = Player(fig, update, maxi=num_times) #len(y)-1)

# tkinter root window and canvas
root=Tk()
root.geometry('1000x1000')

canvas = FigureCanvasTkAgg(fig, master=root)
canvas.draw()
canvas.get_tk_widget().pack(side=TOP,fill=BOTH,expand=1)


root.mainloop()

即使向前/向后单帧工作，向前/向后播放按钮也不适用于 tkinter 画布上显示的动画

0 个答案: