将matplotlib嵌入到tkinter画布中会打开两个窗口

Question

以下代码我正在按照我希望的方式行事。我已将matplotlib图形嵌入到tkinter画布中。该程序打开了两个窗口，其中一个功能正常，其中一个没有必要。我不知道如何解决这个问题。这是代码，请忽略不必要的导入:)

import numpy as np
import sys
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import matplotlib as mpl
from matplotlib import cm
from numpy.random import random
from matplotlib.widgets import Button
import matplotlib.colors
import tkinter as tk
import matplotlib.backends.tkagg as tkagg
from matplotlib.backends.backend_agg import FigureCanvasAgg
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg

DEBUG_MODE = False                          #Debug mode - True = ON
MATRIX_WIDTH = 50
MATRIX_HEIGHT = 50
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600
LED_COUNT = MATRIX_WIDTH * MATRIX_HEIGHT
REFRESH_RATE = 30                           #REFRESH_RATE used to control FuncAnimation interval
MATRIX = random((50,50))                    #Fills MATRIX as not to be null for first print  


plt.rcParams['toolbar'] = 'None'            #Disables matplotlib toolbar
fig = plt.figure(figsize=(3,3))             #'figsize' measured in inches
im = plt.imshow(MATRIX, interpolation='nearest', cmap=cm.Spectral)
plt.axis('off')                             #Turns off x, y axis

def data_gen():                             #Generates amd populates MATRIX with pattern data
    while True:        
        MATRIX = random((MATRIX_WIDTH, MATRIX_HEIGHT))
        yield MATRIX
        if (DEBUG_MODE): print("MATRIX yeilded")

def update(data):                           #Updates/prints new MATRIX from data_gen()
    im.set_array(data)
    if (DEBUG_MODE): print("Updated data")



root = tk.Tk()
label = tk.Label(root,text="Matrix Program").grid(column=0, row=0)
canvas = FigureCanvasTkAgg(fig, master=root)
canvas.get_tk_widget().grid(column=0,row=1)


ani = animation.FuncAnimation(fig, update, data_gen, interval=REFRESH_RATE)
plt.show()

需要对此代码执行哪些操作才能从tkinter打开一个画布，并嵌入实时matplotlib图形？

如何设置画布的大小？