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python numpy 数组拼接

我就写一下我遇到的,更多具体的请看Python之Numpy数组拼接,组合,连接

 

>>> a
array([0, 1, 2],
       [3, 4, 5],
       [6, 7, 8])
>>> b = a*2
>>> b
array([ 0, 2, 4],
       [ 6, 8, 10],
       [12, 14, 16])

1.水平组合
>>> np.hstack((a,b))
array([ 0, 1, 2, 0, 2, 4],
       [ 3, 4, 5, 6, 8, 10],
       [ 6, 7, 8, 12, 14, 16])
>>> np.concatenate((a,b),axis=1)
array([ 0, 1, 2, 0, 2, 4],
       [ 3, 4, 5, 6, 8, 10],
       [ 6, 7, 8, 12, 14, 16])

2.垂直组合
>>> np.vstack((a,b))
array([ 0, 1, 2],
       [ 3, 4, 5],
       [ 6, 7, 8],
       [ 0, 2, 4],
       [ 6, 8, 10],
       [12, 14, 16])
>>> np.concatenate((a,b),axis=0)
array([ 0, 1, 2],
       [ 3, 4, 5],
       [ 6, 7, 8],
       [ 0, 2, 4],
       [ 6, 8, 10],
       [12, 14, 16])

posted @ 2018-05-26 16:25  MARK+  阅读(2979)  评论(0编辑  收藏  举报