📜  Python中的 numpy.square()

📅  最后修改于: 2022-05-13 01:55:47.596000             🧑  作者: Mango

Python中的 numpy.square()

numpy.square(arr, out = None, ufunc 'square') :这个数学函数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:处理复数

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