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Python | Numpy numpy.resize ()

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With Numpy numpy.resize () we can resize the array. The array can be of any shape, but to resize it we just need the size, i.e.  (2, 2) , (2, 3) and many others. When resizing, zero is added, if there are no values ​​in a specific location.

Parameters:
new_shape: [tuple of ints, or n ints] Shape of resized array
refcheck: [bool, optional] This parameter is used to check the reference counter. By Default it is True.

Returns: None

Most of you are now wondering what is the difference between reshaping and resizing . When we talk about resizing, the array changes its shape as temporary, but when we talk about resizing, changes are made all the time.

Example # 1:
In this In the example, we see that using the .resize() method we changed the shape of the array from 1 × 6 to 2 × 3 .

# import python numpy module

import numpy as np

 
# Generate a random array

gfg = np.array ( [ 1 , 2 , 3 , 4 , 5 , 6 ])

 
# Change the array forever

gfg.resize ( 2 , 3 )

 

print (gfg)

Exit:

 [[1 2 3] [4 5 6 ]] 

Example # 2:
In this example, we can see that we are trying to resize an array of a shape that is a type outside of bound values. But NumPy handles this situation by adding zeros when the values ​​do not exist in the array.

# import python numpy module

import numpy as np

 
# Generate a random array

gfg = np.array ([ 1 , 2 , 3 , 4 , 5 , 6 ])

 
# Mandatory values ​​12, existing values ​​6

gfg.resize ( 3 , 4 )

  

print (gfg)

Exit:

 [[1 2 3 4] [5 6 0 0] [ 0 0 0 0]] 

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