numpy.hstack() in Python
numpy.hstack() function is used to stack the sequence of input arrays horizontally (i.e. column wise) to make a single array.
Syntax : numpy.hstack(tup)
Parameters :
tup : [sequence of ndarrays] Tuple containing arrays to be stacked. The arrays must have the same shape along all but the second axis.Return : [stacked ndarray] The stacked array of the input arrays.
Code #1 :
# Python program explaining# hstack() function import numpy as geek # input arrayin_arr1 = geek.array([ 1, 2, 3] )print ("1st Input array : \n", in_arr1) in_arr2 = geek.array([ 4, 5, 6] )print ("2nd Input array : \n", in_arr2) # Stacking the two arrays horizontallyout_arr = geek.hstack((in_arr1, in_arr2))print ("Output horizontally stacked array:\n ", out_arr) |
Output:
1st Input array : [1 2 3] 2nd Input array : [4 5 6] Output horizontally stacked array: [1 2 3 4 5 6]
Code #2 :
# Python program explaining# hstack() function import numpy as geek # input arrayin_arr1 = geek.array([[ 1, 2, 3], [ -1, -2, -3]] )print ("1st Input array : \n", in_arr1) in_arr2 = geek.array([[ 4, 5, 6], [ -4, -5, -6]] )print ("2nd Input array : \n", in_arr2) # Stacking the two arrays horizontallyout_arr = geek.hstack((in_arr1, in_arr2))print ("Output stacked array :\n ", out_arr) |
Output:
1st Input array : [[ 1 2 3] [-1 -2 -3]] 2nd Input array : [[ 4 5 6] [-4 -5 -6]] Output stacked array : [[ 1 2 3 4 5 6] [-1 -2 -3 -4 -5 -6]]
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