How to merge 2 numpy arrays?

Question

I feel like there is some documentation I am missing, but I can\'t find anything on this specific example - everything is just about concatenating or stacking arrays.

I

Answer 1

If you have two-dimensional matrices, you can use numpy.dstack():

z = np.dstack((x, y))

Answer 2

In [39]: z = np.concatenate((x[...,None], y[...,None]), axis=2)

In [40]: z
Out[40]: 
array([[[ 1,  7],
        [ 2,  8],
        [ 3,  9]],

       [[ 4, 10],
        [ 5, 11],
        [ 6, 12]]])

Answer 3

Sounds like the function you're looking for is stack(), using it to stack along the 3rd dimension.

import numpy as np

x = np.asarray([[1,2,3],[4,5,6]])
y = np.asarray([[7,8,9],[10,11,12]])
z = np.stack((x, y), 2)