column_stack

column_stack(tup)

Stack 1-D arrays as columns into a 2-D array.

Take a sequence of 1-D arrays and stack them as columns to make a single 2-D array. 2-D arrays are stacked as-is, just like with hstack. 1-D arrays are turned into 2-D columns first.

Parameters:

tup : sequence of 1-D or 2-D arrays.

Arrays to stack. All of them must have the same first dimension.

Returns:

stacked : 2-D array

The array formed by stacking the given arrays.

See also

stack, hstack, vstack, concatenate

Examples

>>> a = np.array((1,2,3))
>>> b = np.array((2,3,4))
>>> np.column_stack((a,b))
array([[1., 2.],
       [2., 3.],
       [3., 4.]])