Python中的 Matplotlib.artist.Artist.set_picker()

Matplotlib是Python中的一个库，它是 NumPy 库的数值数学扩展。 Artist 类包含呈现为 FigureCanvas 的对象的 Abstract 基类。图中所有可见元素都是 Artist 的子类。

matplotlib.artist.Artist.set_picker() 方法

matplotlib 库的艺术家模块中的set_picker() 方法用于定义艺术家的拾取行为。

Syntax: Artist.set_picker(self, picker)

Parameters: This method accept the following parameters as discussed below:

• picker : This parameter is used to set picking behavior. This can be None or bool or float or function.

Returns: This method the picking behavior of the artist.

下面的示例说明了 matplotlib 中的 matplotlib.artist.Artist.set_picker()函数：

示例 1：

# Implementation of matplotlib function
from matplotlib.artist import Artist
import numpy as np 
import matplotlib.pyplot as plt 
       
  
np.random.seed(19680801) 
  
volume = np.random.rayleigh(27, size = 40) 
amount = np.random.poisson(7, size = 40) 
ranking = np.random.normal(size = 40) 
price = np.random.uniform(1, 7, size = 40) 
       
fig, ax = plt.subplots() 
       
scatter = ax.scatter(volume * 2,  
                     amount**3, 
                     c = ranking**3, 
                     s = price**3, 
                     vmin = -3, 
                     vmax = 3, 
                     cmap ="Spectral") 
    
Artist.set_picker(ax, picker = 4) 
          
fig.suptitle('matplotlib.artist.Artist.set_picker()\
function Example', fontweight ="bold") 
  
plt.show()

输出：

示例 2：

# Implementation of matplotlib function
from matplotlib.artist import Artist
import numpy as np 
import matplotlib.pyplot as plt 
  
    
X = np.random.rand(10, 200) 
xs = np.mean(X, axis = 1) 
ys = np.std(X, axis = 1) 
    
fig = plt.figure() 
ax = fig.add_subplot(111) 
line, = ax.plot(xs, ys, 'go-') 
    
Artist.set_picker(ax, picker = True) 
          
fig.suptitle('matplotlib.artist.Artist.set_picker()\
 function Example', fontweight ="bold") 
  
plt.show()

输出：