Matplotlib.artist.artist.get_window_extent()

Python matplotlib库的artist模块中的get_window_extent()方法 用于返回显示空间中的轴边界框。

语法: Artist.get_window_extent (self, renderer)

参数:该方法接受以下参数。

• renderer:这个参数是RendererBase的子类。

返回: 该方法返回显示空间中的人物包围盒。

下面的例子演示了matplotlib中的matplotlib.artist.artist.get_window_extent()函数:

示例1

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.artist import Artist 
  
  
X = np.arange(-10, 10, 1.5)
Y = np.arange(-10, 10, 1.5)
U, V = np.meshgrid(X, Y)
  
fig, ax = plt.subplots()
  
ax.quiver(X, Y, U, V)
  
fig.canvas.draw()  
renderer = fig.canvas.renderer
  
# use of get_window_extent() method
val = Artist.get_window_extent(ax, renderer)
print("Value Return by get_window_extent():")
print(val)
  
fig.suptitle('matplotlib.artist.Artist.get_window_extent() \
function Example', fontweight="bold")
  
plt.show()

输出:

Value Return by get_window_extent():
Bbox(x0=0.0, y0=0.0, x1=0.0, y1=0.0)

示例2

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.artist import Artist 
  
  
xx = np.random.rand(10, 10)
  
fig, ax = plt.subplots()
  
m = ax.pcolor(xx)
m.set_zorder(-20)
  
fig.canvas.draw()  
renderer = fig.canvas.renderer
  
# use of get_window_extent() method
val = Artist.get_window_extent(ax, renderer)
print("Value Return by get_window_extent():")
print(val)
  
fig.suptitle('matplotlib.artist.Artist.get_window_extent() \
function Example', fontweight="bold")
  
plt.show()

输出:

Value Return by get_window_extent():
Bbox(x0=0.0, y0=0.0, x1=0.0, y1=0.0)