matplotlib.pyplot.waitforbuttonpress()函数

matplotlib.pyplot.waitforbuttonpress()方法

matplotlib库pyplot模块中的waitforbuttonpress()方法用于阻塞调用，以与图形交互。

语法:matplotlib.pyplot.waitforbuttonpress(超时= – 1)

参数:该方法接受以下参数:

timeout:超时值。

返回:此方法不返回任何值。

下面的例子演示了matplotlib.pyplot.waitforbuttonpress()函数在matplotlib.pyplot中的作用:

示例1

# Implementation of matplotlib function 
import numpy as np 
import matplotlib.pyplot as plt 
  
  
for ite in range(2): 
    x = np.linspace(-2, 6, 100) 
    y = (ite + 1)*x 
  
    fig = plt.figure() 
      
    ax = fig.subplots() 
    ax.plot(x, y, '-b') 
  
    fig.suptitle("""matplotlib.pyplot.waitforbuttonpress()
function Example\n\n""", fontweight ="bold") 
  
    w = plt.waitforbuttonpress() 
    print("Result after", ite, "click", w) 
  
    plt.show()

输出:

matplotlib.pyplot.waitforbuttonpress()函数

示例2

# Implementation of matplotlib function 
import numpy as np 
import matplotlib.cm as cm 
import matplotlib.mlab as mlab 
import matplotlib.pyplot as plt 
    
  
fig = plt.figure() 
ax = fig.subplots() 
    
def tellme(s): 
        
    fig.suptitle(s, fontweight ="bold") 
    fig.canvas.draw() 
    renderer = fig.canvas.renderer 
    fig.draw(renderer) 
    
plt.clf() 
ax.axis([-1., 1., -1., 1.]) 
  
plt.setp(plt.gca(), autoscale_on = False) 
    
tellme("""matplotlib.pyplot.waitforbuttonpress()
function Example\n\n""") 
    
w = plt.waitforbuttonpress() 
print("Result after click :", w) 
  
plt.show()