Python中的numpy.square()用法详细介绍

2021年3月10日16:18:22 发表评论 1,444 次浏览

numpy.square(arr, out = None, ufunc'square'):该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.]
Python中的numpy.square()1

参考文献:

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

.

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