I have a 1d array and 2d array
a = [4,7,10] b = [[1,2,3],[4,5,6],[7,8,9]] a.shape = (2,) b.shape = (3,3)
I want:
c = [[1,2,3,4],[4,5,6,7],[7,8,9,10]] c.shape = (3,4)
I tried np.vstack
, np.concenrate
but all failed
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Answer
You can use numpy.column_stack
:
>>> np.column_stack([b,a]) array([[ 1, 2, 3, 4], [ 4, 5, 6, 7], [ 7, 8, 9, 10]])