2d matrix composed from 1d matrices in python

Question

A newbie question and possible duplicate: How can one compose a matrix in numpy using arrays or 1d matrices? In matlab, I would use following syntax for the matrix consisting of three arrays treated as rows:

A=[1; 1; 1];
B=[2; 2; 2];
C=[3; 3; 3];
D=[A B C]

The result is:

D =

 1     2     3
 1     2     3
 1     2     3

Thank you

Answer 1

You should do

import numpy as np
A = np.array([1, 1, 1])
B = np.array([2, 2, 2])
C = np.array([3, 3, 3])
D = np.vstack((A, B, C))

See NumPy for MATLAB users (official link seems to be down)