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Python numpy.square()用法及代码示例


numpy.square(arr,out = None,ufunc'square'):此数学函数可帮助用户计算数组中每个元素的平方值。

参数:

arr  : [array_like] Input array or object
          whose elements, we need to square.

返回:


An array with square value of each array.  


代码1:工作

# Python program explaining 
# square () function 
  
import numpy as np 
  
arr1 = [1, -3, 15, -466] 
print ("Square Value of arr1 : \n", np.square(arr1)) 
  
arr2 = [23 ,-56] 
print ("\nSquare Value of arr2 : ", np.square(arr2))

输出:

Square Value of arr1 : 
 [     1      9    225 217156]

Square Value of arr2 :  [ 529 3136]


代码2:使用复数

# Python program explaining 
# square () function 
  
import numpy as np 
  
a = 4 + 3j
print("Square(4 + 3j) : ", np.square(a)) 
  
b = 16 + 13j
print("\nSquare value(16 + 13j) : ", np.square(b))

输出:

Square(4 + 3j) :  (7+24j)

Square value(16 + 13j) :  (87+416j)


代码3:numpy.square()的图形表示

# Python program explaining 
# square () function 
  
import numpy as np 
import matplotlib.pyplot as plt 
  
a = np.linspace(start = -5, stop = 5, 
                num = 6, endpoint = True) 
                  
print("Graphical Representation : \n", np.square(a)) 
  
plt.title("blue : with square\nred : without square") 
plt.plot(a, np.square(a)) 
  
plt.plot(a, a, color = 'red') 
plt.show()

输出:

Graphical Representation : 
 [ 25.   9.   1.   1.   9.  25.]


参考文献:
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.absolute.html



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注:本文由纯净天空筛选整理自Mohit Gupta_OMG 大神的英文原创作品 numpy.square() 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。