Matplotlib.axes.axes.set_axes_locator()

Matplotlib是Python中的一个库，它是NumPy库的数值-数学扩展。Axes包含了大多数图形元素:Axis、Tick、Line2D、Text、Polygon等，并设置坐标系。Axes的实例通过callbacks属性支持回调。

函数:Matplotlib.axes.axes.set_axes_locator()

matplotlib库的Axes模块中的Axes.set_axes_locator()函数用于设置Axes locator。

语法:Axes.set_axes_locator(self, locator)

参数:该方法只接受一个参数。

• locator:这个参数可以通过值和语法调用，比如-[[Axes，渲染器]，Bbox]。

返回值:该方法不返回任何值。

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

示例1

# Implementation of matplotlib function
from mpl_toolkits.axes_grid1 import Size, Divider
import matplotlib.pyplot as plt
  
  
fig = plt.figure(1, (6, 6))
  
value1 = [Size.Fixed(2.), Size.Fixed(.8), Size.Fixed(1.2),
         Size.Fixed(.7)]
value2 = [Size.Fixed(1.2), Size.Fixed(.7), Size.Fixed(2.)]
  
polygon = (0.2, 0.2, 0.4, 0.4)
resultant = Divider(fig, polygon, value1, 
                    value2, aspect = False)
  
ax1 = fig.add_axes(polygon, label ="2")
ax2 = fig.add_axes(polygon, label ="3")
ax3 = fig.add_axes(polygon, label ="1")
ax4 = fig.add_axes(polygon, label ="4")
  
ax1.set_axes_locator(resultant.new_locator(nx = 0,
                     ny = 0))
ax2.set_axes_locator(resultant.new_locator(nx = 0, 
                     ny = 2))
ax3.set_axes_locator(resultant.new_locator(nx = 3, 
                     ny = 2))
ax4.set_axes_locator(resultant.new_locator(nx = 3, 
                     nx1 = 4, ny = 0))
  
fig.suptitle('matplotlib.axes.Axes.set_axes_locator()\
 function Example\n\n', fontweight ="bold")
plt.show()

输出:

示例2

# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1.axes_divider import HBoxDivider
import mpl_toolkits.axes_grid1.axes_size as Size
  
arr1 = np.arange(40).reshape((8, 5))
arr2 = np.arange(12).reshape((3, 4))
  
fig, (ax1, ax2) = plt.subplots(1, 2)
ax1.imshow(arr1)
ax2.imshow(arr2)
  
rect = 111 
pad = 1
for ax in [ax1, ax2]:
    ax.locator_params(nbins = 1)
    ax.xaxis.set_visible(False)
    ax.yaxis.set_visible(False)
  
h1, v1 = Size.AxesX(ax1), Size.AxesY(ax1)
h2, v2 = Size.AxesX(ax2), Size.AxesY(ax2)
  
pad_v = Size.Scaled(1)
pad_h = Size.Fixed(pad)
  
my_divider = HBoxDivider(fig, rect,
                         horizontal =[h1, pad_h, h2],
                         vertical =[v1, pad_v, v2])
  
ax1.set_axes_locator(my_divider.new_locator(0))
ax2.set_axes_locator(my_divider.new_locator(2))
  
ax3 = plt.axes([0.4, 0.5, 0.001, 0.001], frameon = False)
ax3.xaxis.set_visible(False)
ax3.yaxis.set_visible(False)
ax3.annotate("GeeksforGeeks\n matplotlib module \n Axes class", 
             (1, 0.5),
             xycoords ="axes fraction",
             va ="center", ha ="center",
             bbox = dict(boxstyle ="round, 
             pad = 1", fc ="w"))
  
fig.suptitle('matplotlib.axes.Axes.set_axes_locator()\
 function Example\n\n', fontweight ="bold")
plt.show()

输出: