Python Matplotlib.axis.Axis.remove_callback()用法及代碼示例

# Implementation of matplotlib function 
from matplotlib.axis import Axis 
import matplotlib.pyplot as plt  
import numpy as np  
import time  
    
    
def update():  
    global timer  
    plt.get_current_fig_manager().canvas.figure.patch.set_facecolor(str(np.random.random()))  
    plt.draw()  
          
      
def start_animation():  
    global it  
    timer = fig.canvas.new_timer(interval = 50)  
    w = timer.add_callback(update)  
    timer.start()  
    timer.remove_callback(w)  
    
it = 1
fig = plt.figure()  
start_animation()  
  
fig.suptitle('matplotlib.axis.Axis.remove_callback() \ 
function Example\n', fontweight ="bold")   
    
plt.show() 

# Implementation of matplotlib function 
from matplotlib.axis import Axis 
from random import randint, choice   
import time   
import matplotlib.pyplot as plt   
import matplotlib.patches as patches   
       
     
back_color = "black"
colors = ['red', 'green', 'blue', 'purple', "yellow", "pink"]   
width, height = 4, 4
        
fig = plt.figure()   
plt.xlim([0, width])  
plt.ylim([0, height])   
        
fig.canvas.draw()   
    
it = 1 
def update():  
    global it  
    x = randint(0, width - 1)   
    y = randint(0, height - 1)   
        
    arti = patches.Rectangle(   
        (x, y), 1, 1,   
        facecolor = choice(colors),   
        edgecolor = back_color   
    )   
    
    fig.add_artist(arti)  
    fig.draw_artist(arti)  
    fig.canvas.blit(fig.bbox)  
    
    if it > 100:  
        timer.remove_callback(w)  
    it += 1
        
timer = fig.canvas.new_timer(interval = 1)   
w = timer.add_callback(update)   
timer.start()    
  
fig.suptitle('matplotlib.axis.Axis.remove_callback() \ 
function Example\n', fontweight ="bold")   
    
plt.show()