merge numpy array together

Question

a1=array([[0, 1, 2, 3, 4],
   [5, 6, 7, 8, 9]])
a2=array([[0, 1],
   [2, 3]])
a3 = array([[0, 1, 2, 3, 4, 0, 1],
   [5, 6, 7, 8, 9, 2, 3]])

I have two arrays a1,a2，I want to merge them together.the result is a3

See [Numpy: Joining structured arrays?](http://stackoverflow.com/q/5355744/1761793) — Ajoy, May 20 '15 at 02:21
Also, [Concatenate two arrays vertically](http://stackoverflow.com/q/21887754/1761793) has your answer in the question itself. — Ajoy, May 20 '15 at 02:28

farhawa · Accepted Answer · 2015-05-20T03:21:32.703

1

Using numpy np.concatenate() this way should work

 a3 = np.concatenate((a1,a2),axis = 1)

edited May 20 '15 at 03:21

answered May 20 '15 at 02:55

farhawa

score 1 · Answer 2 · answered May 20 '15 at 06:40

1

np.c_[a1, a2]

also a np.r_ for row-wise merging.

answered May 20 '15 at 06:40

seven7e

2 Answers2