Python中的 Matplotlib.axes.Axes.get_contains()

Matplotlib是Python中的一个库，它是 NumPy 库的数值数学扩展。 Axes 类包含大部分图形元素：Axis、Tick、Line2D、Text、Polygon 等，并设置坐标系。 Axes 的实例通过回调属性支持回调。

matplotlib.axes.Axes.get_contains()函数

matplotlib 库的 axes 模块中的Axes.get_contains()函数用于返回艺术家的自定义包含函数。

Syntax: Axes.get_contains(self)

Parameters: This method does not accept any parameters.

Returns: This method returns the custom contains function of the artist.

下面的示例说明了 matplotlib.axes 中的 matplotlib.axes.Axes.get_contains()函数：

示例 1：

# Implementation of matplotlib function
import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import numpy as np
from numpy.random import rand
    
    
fig, ax2 = plt.subplots()
    
ax2.bar(range(10), rand(10), picker = True)
  
for label in ax2.get_xticklabels(): 
    label.set_picker(True)
    
def onpick1(event):
      
    if isinstance(event.artist, Line2D):
        thisline = event.artist
        xdata = thisline.get_xdata()
        ydata = thisline.get_ydata()
        ind = event.ind
        print('onpick1 line:',
               np.column_stack([xdata[ind], 
                               ydata[ind]]))
          
    elif isinstance(event.artist, Rectangle):
        patch = event.artist
        print('onpick1 patch:', patch.get_path())
          
    elif isinstance(event.artist, Text):
        text = event.artist
        print('onpick1 text:', text.get_text())
  
ax2.set_contains(onpick1)
  
ax2.text(0.5, 0.9,
         "Value Return : "+ str(ax2.get_contains()), 
         fontweight ="bold", fontsize = 10)
  
fig.suptitle('matplotlib.axes.Axes.get_contains() function\
Example', fontweight ="bold")
  
plt.show()

输出：

示例 2：

# Implementation of matplotlib function
import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import numpy as np
from numpy.random import rand
    
    
fig, ax2 = plt.subplots()
    
ax2.bar(range(10), rand(10), picker = True)
  
for label in ax2.get_xticklabels(): 
    label.set_picker(True)
    
def onpick1(event):
      
    if isinstance(event.artist, Line2D):
        thisline = event.artist
        xdata = thisline.get_xdata()
        ydata = thisline.get_ydata()
        ind = event.ind
        print('onpick1 line:',
               np.column_stack([xdata[ind], 
                                ydata[ind]]))
          
    elif isinstance(event.artist, Rectangle):
        patch = event.artist
        print('onpick1 patch:', patch.get_path())
          
    elif isinstance(event.artist, Text):
        text = event.artist
        print('onpick1 text:', text.get_text())
  
ax2.set_contains(onpick1)
  
ax2.text(0.5, 0.9,
         "Value Return : "+ str(ax2.get_contains()), 
         fontweight ="bold", fontsize = 10)
  
fig.suptitle('matplotlib.axes.Axes.get_contains() function\
Example', fontweight ="bold")
  
plt.show()

输出：