numpy.ma.mask_cols() function | Python
Last Updated :
22 Apr, 2020
In thisnumpy.ma.mask_cols()
function, mask columns of a 2D array that contain masked values. This function is a shortcut to mask_rowcols with axis equal to 1.
Syntax : numpy.ma.mask_cols(arr, axis = None)
Parameters :
arr : [array_like, MaskedArray] The array to mask.
axis : [int, optional] Axis along which to perform the operation. Default is None.
Return : [MaskedArray] A modified version of the input array.
Code #1 :
import numpy as geek
import numpy.ma as ma
arr = geek.zeros(( 3 , 3 ), dtype = int )
arr[ 1 , 1 ] = 1
arr = ma.masked_equal(arr, 1 )
gfg = ma.mask_cols(arr)
print (gfg)
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Output :
[[0 -- 0]
[0 -- 0]
[0 -- 0]]
Code #2 :
import numpy as geek
import numpy.ma as ma
arr = geek.zeros(( 4 , 4 ), dtype = int )
arr[ 2 , 2 ] = 1
arr = ma.masked_equal(arr, 1 )
gfg = ma.mask_cols(arr)
print (gfg)
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Output :
[[0 0 -- 0]
[0 0 -- 0]
[0 0 -- 0]
[0 0 -- 0]]
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