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Python Matplotlib.axes.Axes.get_xticks()用法及代码示例


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

matplotlib.axes.Axes.get_xticks()函数

matplotlib库的axiss模块中的Axes.get_xticks()函数用于返回x刻度作为位置列表。

用法: Axes.get_xticks(self, minor=False)


参数:此方法接受以下参数。

  • minor:此参数用于设置主要刻度线还是设置次要刻度线

返回值:此方法返回Text值列表。

以下示例说明了matplotlib.axes中的matplotlib.axes.Axes.get_xticks()函数:

范例1:

# Implementation of matplotlib function 
import numpy as np 
import matplotlib.pyplot as plt 
from matplotlib.patches import Polygon 
    
    
def func(x):
    return (x - 4) * (x - 6) * (x - 5) + 100
    
    
a, b = 2, 9  # integral limits 
x = np.linspace(0, 10) 
y = func(x) 
    
fig, ax = plt.subplots() 
ax.plot(x, y, "k", linewidth = 2) 
ax.set_ylim(bottom = 0) 
    
# Make the shaded region 
ix = np.linspace(a, b) 
iy = func(ix) 
verts = [(a, 0), *zip(ix, iy), (b, 0)] 
poly = Polygon(verts, facecolor ='green',  
               edgecolor ='0.5', alpha = 0.4) 
ax.add_patch(poly) 
    
ax.text(0.5 * (a + b), 30,  
        r"$\int_a ^ b f(x)\mathrm{d}x$", 
        horizontalalignment ='center',  
        fontsize = 20) 
    
fig.text(0.9, 0.05, '$x$') 
fig.text(0.1, 0.9, '$y$') 
    
ax.spines['right'].set_visible(False) 
ax.spines['top'].set_visible(False)  
ax.set_xticks((a, b-2 * a, b)) 
  
w = ax.get_xticks() 
print(w) 
ax.text(3, 180, "xtick values:"+str(w),  
        fontweight ="bold") 
    
fig.suptitle('matplotlib.axes.Axes.get_xticks() function\ 
 Example\n\n', fontweight ="bold") 
fig.canvas.draw() 
plt.show()

输出:

范例2:

# Implementation of matplotlib function 
import numpy as np 
import matplotlib.pyplot as plt 
    
# Fixing random state for reproducibility 
np.random.seed(19680801) 
    
x = np.linspace(0, 2 * np.pi, 100) 
y = np.sin(x) 
y2 = y + 0.2 * np.random.normal(size = x.shape) 
    
fig, ax = plt.subplots() 
ax.plot(x, y) 
ax.plot(x, y2) 
   
ax.set_xticks([0, np.pi, 2 * np.pi]) 
    
ax.spines['left'].set_bounds(-1, 1) 
ax.spines['right'].set_visible(False) 
ax.spines['top'].set_visible(False) 
  
w = ax.get_xticks() 
ww = list(w) 
strr ="[ "
for i in ww:
    strr+='%.3f'% i+", "
strr+="]"
ax.text(1, 0, "xtick values:"+strr, fontweight ="bold") 
    
fig.suptitle('matplotlib.axes.Axes.get_xticks() function\ 
 Example\n\n', fontweight ="bold") 
fig.canvas.draw() 
plt.show()

输出:





注:本文由纯净天空筛选整理自SHUBHAMSINGH10大神的英文原创作品 Matplotlib.axes.Axes.get_xticks() in Python。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。