Python 3.x 使用numpy将列转换为特定行

Python 3.x 使用numpy将列转换为特定行,python-3.x,numpy,Python 3.x,Numpy,我试图提取一列并排列成多行。 我的输入:数据 -2.74889,1.585,223.60 -2.74889,1.553,228.60 -2.74889,1.423,246.00 -2.74889,1.236,249.10 -2.74889,0.928,243.80 -2.74889,0.710,242.20 -2.74889,0.558,243.50 ... ... ... k = np.reshape(data[:,2], (2,10)) 输出: [[ 223.6 228.

我试图提取一列并排列成多行。 我的输入:数据

-2.74889,1.585,223.60

-2.74889,1.553,228.60

-2.74889,1.423,246.00

-2.74889,1.236,249.10

-2.74889,0.928,243.80

-2.74889,0.710,242.20

-2.74889,0.558,243.50
...
...
...

k = np.reshape(data[:,2], (2,10))
输出:

[[ 223.6   228.6   246.    249.1   243.8   242.2   243.5   244.    244.8
   245.2 ]

 [ 224.6   230.    250.7   249.3   244.4   242.1   242.8   243.8   244.7
   245.1 ]]
我的问题是如何为每个数字(例如223.6)添加方括号,并将它们保留在一行中

谢谢,
Prasad。

重塑形状时,需要扩展阵列的维度

设置

使用附加尺寸重塑

x[:, 2].reshape((-1, 10, 1))
轴=2展开

x = np.arange(60).reshape(20, 3)
np.expand_dims(x[:, 2].reshape(-1, 10), axis=2)
np.atleast_3d(x[:, 2].reshape(-1, 10))
至少\u 3d

x = np.arange(60).reshape(20, 3)
np.expand_dims(x[:, 2].reshape(-1, 10), axis=2)
np.atleast_3d(x[:, 2].reshape(-1, 10))
这三种产品都是:

array([[[ 2],
        [ 5],
        [ 8],
        [11],
        [14],
        [17],
        [20],
        [23],
        [26],
        [29]],

       [[32],
        [35],
        [38],
        [41],
        [44],
        [47],
        [50],
        [53],
        [56],
        [59]]])

你的意思并不完全清楚,但也许是这样的

>>> import numpy as np
>>> data = np.arange(30).reshape(10,3)
>>> data
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]])
>>> data[:, 2, None]
array([[ 2],
       [ 5],
       [ 8],
       [11],
       [14],
       [17],
       [20],
       [23],
       [26],
       [29]])