Matplotlib.axis.axis.set_minor_formatter()

matplotlib库的Axis模块中的Axis.set_minor_formatter()函数用于设置次要指针的格式化器。

语法:Axis.set_minor_formatter(self, formatter)

参数:该方法接受以下参数。

• formatter:该参数是 格式化程序 .

返回值:该方法不返回任何值。

下面的例子说明了matplotlib.axis.axis.set_minor_formatter()函数在matplotlib.axis中的作用:

示例1

# Implementation of matplotlib function 
from matplotlib.axis import Axis
import matplotlib.pyplot as plt 
from matplotlib.ticker import MultipleLocator, ScalarFormatter 
    
fig, ax = plt.subplots() 
ax.plot([0, 5, 10, 15, 20], [3, 2, 1, 2, 4]) 
    
Axis.set_minor_locator(ax.xaxis, MultipleLocator(1)) 
Axis.set_minor_formatter(ax.xaxis, ScalarFormatter()) 
    
ax.tick_params(axis ='both', which ='major',  
               labelsize = 14, pad = 12,  
               colors ='g') 
    
ax.tick_params(axis ='both', which ='minor', 
               labelsize = 8, colors ='b') 
   
plt.title("Matplotlib.axis.Axis.set_minor_formatter()\n\
Function Example", fontsize = 12, fontweight ='bold') 
  
plt.show()

输出:

示例2

# Implementation of matplotlib function 
from matplotlib.axis import Axis
import matplotlib.pyplot as plt 
from matplotlib.ticker import LogFormatter 
import numpy as np 
    
fig, axes = plt.subplots(2) 
    
dt = 0.01
t = np.arange(dt, 20.0, dt) 
    
# first plot doesn't use a formatter 
axes[0].semilogx(t, np.exp(-t / 5.0))  
axes[0].grid() 
    
xlims = [[0, 25], [0.2, 8], [0.6, 0.9]] 
    
for ax, xlim in zip(axes[1:], xlims): 
    
    ax.semilogx(t, np.exp(-t / 5.0)) 
    formatter = LogFormatter(labelOnlyBase = False,  
                             minor_thresholds = (2, 0.4)) 
    
    Axis.set_minor_formatter(ax.xaxis, formatter)  
    ax.grid() 
  
fig.suptitle("Matplotlib.axis.Axis.set_minor_formatter()\n\
Function Example", fontsize = 12, fontweight ='bold') 
  
plt.show()

输出: