how to combine two numpy arrays and form a new array of a new size

Question

I have two numpy arrays that have the same shape(4,1,2). How can I combine them and get a new array of size(8,1,2) with minimum lines of python code? Not changing values just put them together with A on the top B at the bottom.

    A=numpy.array([[[1,1]],
                   [[2,2]],
                   [[3,3]],
                   [[4,4]]]);


   B=numpy.array([[[5,5]],
                   [[6,6]],
                   [[7,7]],
                   [[8,8]]]);

I googled this "how to combine two numpy arrays" and found this http://stackoverflow.com/questions/9236926/concatenating-two-one-dimensional-numpy-arrays I don't even know what numpy is and figured it out... lazy question — Adam Buchanan Smith, Mar 11 '16 at 01:01

score 1 · Answer 1 · answered Mar 11 '16 at 00:58

1

numpy.concatenate() should do what you want:

numpy.concatenate((A, B))

answered Mar 11 '16 at 00:58

pp_

3,435
4
19
27

`numpy.vstack((A,B))` is another alternative – Akavall Mar 11 '16 at 01:01

score 0 · Answer 2 · answered Mar 11 '16 at 01:01

0

Use numpy.vstack()

numpy.vstack([A,B])

answered Mar 11 '16 at 01:01

xvan

4,554
1
22
37

how to combine two numpy arrays and form a new array of a new size

2 Answers2