Adding another column to a numpy array

Question

I have two arrays of the following dimensions: a = (6,1) b = (6,4) I wish to add array (a) as additional column to array (c).

Tried: c= np.column_stack([b,a]) and get an error due to mismatch of dimensions.

see stackoverflow.com/questions/15815854/… and stackoverflow.com/questions/8486294/… — Don Smythe
– Don Smythe, Commented Nov 1, 2016 at 13:03

Angus Williams · Accepted Answer · 2016-11-01 13:07:23Z

1

Try:

c = np.concatenate((b,a), axis=1)

This assumes that a.shape = (6,1). If a.shape = (6,) then you can do:

c = np.concatenate((b,a.reshape((6,1))), axis=1)

answered Nov 1, 2016 at 13:07

Angus Williams

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