numpy.ma.MaskedArray class is a subclass of ndarray designed to manipulate numerical arrays with missing data. With the help of Numpy MaskedArray.__isub__ we can subtract a particular value that is provided as a parameter in the MaskedArray.__isub__() method. Value will be subtracted to each and every element in a numpy array.
Syntax: numpy.MaskedArray.__isub__(other)
Return: Subtract other to self in-place.
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.__isub__(). Remember one thing it wouldn’t work for double type values.
| # import the important module in python  importnumpy as np   Â# make an array with numpy  gfg =np.ma.array([1, 2, 3, 4.7, 5.2])   Â# applying MaskedArray.__isub__() method  print(gfg.__isub__(5))   | 
[-4. -3. -2. -0.3 0.2]
 
Example #2: 
| # import the important module in python  importnumpy as np   Â# make an array with numpy  gfg =np.ma.array([[1, 2, 3, 4, 5],                  [6, 5, 4, 3, 2]])   Â# applying MaskedArray.__isub__() method  print(gfg.__isub__(5))   | 
[[-4 -3 -2 -1 0] [ 1 0 -1 -2 -3]]

 
                                    







