numpy.ma.MaskedArray.nonzero() function - Python
Last Updated :
05 May, 2020
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numpy.ma.MaskedArray.nonzero() function return the indices of unmasked elements that are not zero. This function returns a tuple of arrays, one for each dimension, containing the indices of the non-zero elements in that dimension.
Syntax : numpy.ma.MaskedArray.nonzero(self) Return : [tuple] Indices of elements that are non-zero.Code #1 :
# Python program explaining
# numpy.ma.MaskedArray.nonzero() function
# importing numpy as geek
# and numpy.ma module as ma
import numpy as geek
import numpy.ma as ma
arr = ma.array(geek.eye(5))
gfg = arr.nonzero()
print (gfg)
# Python program explaining# numpy.ma.MaskedArray.nonzero() function # importing numpy as geek # and numpy.ma module as ma import numpy as geek import numpy.ma as ma arr = ma.array(geek.eye(5))gfg = arr.nonzero()print (gfg)(array([0, 1, 2, 3, 4]), array([0, 1, 2, 3, 4]))Code #2 :
# Python program explaining
# numpy.ma.MaskedArray.nonzero() function
# importing numpy as geek
# and numpy.ma module as ma
import numpy as geek
import numpy.ma as ma
arr = ma.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
gfg = ma.nonzero(arr > 3)
print (gfg)
# Python program explaining# numpy.ma.MaskedArray.nonzero() function # importing numpy as geek # and numpy.ma module as ma import numpy as geek import numpy.ma as ma arr = ma.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])gfg = ma.nonzero(arr > 3)print (gfg)(array([1, 1, 1, 2, 2, 2]), array([0, 1, 2, 0, 1, 2]))
