numpy.ma.MaskedArray class is a subclass of ndarray designed to manipulate numerical arrays with missing data. With the help of Numpy MaskedArray.__sub__ we can subtract a particular value that is provided as a parameter in the MaskedArray.__sub__() method. Value will be subtracted from each and every element in a numpy array.

Syntax: numpy.MaskedArray.__sub__ Return: Subtract others from self, and return a new masked array.

Example #1 : In this example we can see that each and every element in an array is subtracted with the value given as a parameter in method MaskedArray.__sub__(). Remember one thing it wouldn’t work for double type values. Python3 1==

# import the important module in python 
import numpy as np 

# make an array with numpy 
gfg = np.ma.array([11, 22, 23, 24, 25]) 

# applying MaskedArray.__sub__() method 
print(gfg.__sub__(5)) 

  Example #2: Python3 1==

# import the important module in python 
import numpy as np 

# make an array with numpy 
gfg = np.ma.array([[21, 22, 23, 24, 25], 
                [26, 25, 24, 23, 22]]) 

# applying MaskedArray.__sub__() method 
print(gfg.__sub__(5))