numpy.ix_() function | Python (original) (raw)

Last Updated : 22 Apr, 2020

numpy.ix_() function construct an open mesh from multiple sequences. This function takes N 1-D sequences and returns N outputs with N dimensions each, such that the shape is 1 in all but one dimension and the dimension with the non-unit shape value cycles through all N dimensions.

Syntax : numpy.ix_(args)
Parameters :
args : [1-D sequences] Each sequence should be of integer or boolean type.
Return : [tuple of ndarrays] N arrays with N dimensions each, with N the number of input sequences. Together these arrays form an open mesh.

Code #1 :

import numpy as geek

gfg = geek.ix_([ 0 , 1 ], [ 2 , 4 ])

print (gfg)

Output :

(array([[0], [1]]), array([[2, 4]]))

Code #2 :

import numpy as geek

arr = geek.arange( 10 ).reshape( 2 , 5 )

print ( "Initial array : \n" , arr)

ixgrid = geek.ix_([ 0 , 1 ], [ 2 , 4 ])

print ( "New array : \n" , arr[ixgrid])

Output :

Initial array : [[0 1 2 3 4] [5 6 7 8 9]] New array : [[2 4] [7 9]]

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