numpy中np.column_stack()和np.row_stack()

>>> import numpy as np

>>> a=np.arange(16).reshape(4,-1)

>>> a

array([[ 0, 1, 2, 3],

[ 4, 5, 6, 7],

[ 8, 9, 10, 11],

[12, 13, 14, 15]])

>>> b=np.arange(16,32).reshape(4,-1)

>>> b

array([[16, 17, 18, 19],

[20, 21, 22, 23],

[24, 25, 26, 27],

[28, 29, 30, 31]])

>>> test=np.row_stack((a,b))#行合并

>>> test

array([[ 0, 1, 2, 3],

[ 4, 5, 6, 7],

[ 8, 9, 10, 11],

[12, 13, 14, 15],

[16, 17, 18, 19],

[20, 21, 22, 23],

[24, 25, 26, 27],

[28, 29, 30, 31]])

>>> test=np.column_stack((a,b))#列合并

>>> test

array([[ 0, 1, 2, 3, 16, 17, 18, 19],

[ 4, 5, 6, 7, 20, 21, 22, 23],

[ 8, 9, 10, 11, 24, 25, 26, 27],

[12, 13, 14, 15, 28, 29, 30, 31]])

>>>