Python中的 Matplotlib.figure.Figure.get_default_bbox_extra_artists()

Matplotlib是Python中的一个库，它是 NumPy 库的数值数学扩展。 figure 模块提供了顶级 Artist，即 Figure，其中包含所有绘图元素。该模块用于控制所有绘图元素的子图和顶级容器的默认间距。

matplotlib.figure.Figure.get_default_bbox_extra_artists() 方法

matplotlib 库的 get_default_bbox_extra_artists() 方法图模块用于获取用于边界框计算的艺术家的默认列表。

Syntax: get_default_bbox_extra_artists(self)

Parameters: This method does not accept any parameters.

Returns: This method return the default list of artists that are used for the bounding box calculation.

编程需要懂一点英语

下面的示例说明了 matplotlib.figure 中的 matplotlib.figure.Figure.get_default_bbox_extra_artists()函数：

示例 1：

# ImpleIn Reviewtation of matplotlib function  
import matplotlib.pyplot as plt
import matplotlib.tri as tri
import numpy as np
     
n_angles = 36
n_radii = 10
min_radius = 2
radii = np.linspace(min_radius, 0.95, n_radii)
     
angles = np.linspace(0, 2 * np.pi,
                     n_angles,
                     endpoint = False)
angles = np.repeat(angles[..., np.newaxis],
                   n_radii,
                   axis = 1)
angles[:, 1::2] += 2 * np.pi / n_angles
     
x = (radii * np.cos(angles)).flatten()
y = (radii * np.sin(angles)).flatten()
     
triang = tri.Triangulation(x, y)
     
triang.set_mask(np.hypot(x[triang.triangles].mean(axis = 1),
                         y[triang.triangles].mean(axis = 1))
                < min_radius)
fig, ax = plt.subplots()
     
ax.triplot(triang, 'bo-', lw = 1, color = "green")
   
w = fig.get_default_bbox_extra_artists()
   
print("Value Return by get_default_bbox_extra_artists() :")
for i in w:
    print(i)
    
fig.canvas.draw()
fig.suptitle('matplotlib.figure.Figure.get_default_bbox_extra_artists()\
function Example', fontweight ="bold") 
  
plt.show()

输出：

Value Return by get_default_bbox_extra_artists() :
AxesSubplot(0.125, 0.11;0.775x0.77)
Line2D(_line0)
Line2D(_line1)
Spine
Spine
Spine
Spine
XAxis(80.0, 52.8)
YAxis(80.0, 52.8)
Text(0.5, 1.0, '')
Text(0.0, 1.0, '')
Text(1.0, 1.0, '')
Rectangle(xy=(0, 0), width=1, height=1, angle=0)

示例 2：

# ImpleIn Reviewtation of matplotlib function  
import matplotlib.pyplot as plt
     
      
fig, ax1 = plt.subplots( )
  
ax1.set_xscale("log")
ax1.set_yscale("log")
  
ax1.set_adjustable("datalim")
ax1.plot([1, 3, 34, 4, 46,
          3, 7, 45, 10],
         [1, 9, 27, 8, 29,
          84, 78, 19, 48], 
         "o-", 
         color ="green")
  
ax1.set_xlim(1e-1, 1e2)
ax1.set_ylim(1, 1e2)
   
w = fig.get_default_bbox_extra_artists()
   
print("Value Return by get_default_bbox_extra_artists():")
  
for i in w:
    print(i)
    
fig.canvas.draw()
fig.suptitle('matplotlib.figure.Figure.get_default_bbox_extra_artists()\
function Example', fontweight ="bold") 
  
plt.show()

输出：

Value Return by get_default_bbox_extra_artists() :
AxesSubplot(0.125, 0.11;0.775x0.77)
Line2D(_line0)
Spine
Spine
Spine
Spine
XAxis(80.0, 52.8)
YAxis(80.0, 52.8)
Text(0.5, 1.0, '')
Text(0.0, 1.0, '')
Text(1.0, 1.0, '')
Rectangle(xy=(0, 0), width=1, height=1, angle=0)