[英]Numpy 3D array arranging and reshaping
I have a 3D numpy array that I need to reshape and arrange. 我有一个3D numpy数组,我需要重塑和整理。 For example, I have x=np.array([np.array([np.array([1,0,1]),np.array([1,1,1]),np.array([0,1,0]),np.array([1,1,0])]),np.array([np.array([0,0,1]),np.array([0,0,0]),np.array([0,1,1]),np.array([1,0,0])]),np.array([np.array([1,0,0]),np.array([1,0,1]),np.array([1,1,1]),np.array([0,0,0])])])
例如,我有x=np.array([np.array([np.array([1,0,1]),np.array([1,1,1]),np.array([0,1,0]),np.array([1,1,0])]),np.array([np.array([0,0,1]),np.array([0,0,0]),np.array([0,1,1]),np.array([1,0,0])]),np.array([np.array([1,0,0]),np.array([1,0,1]),np.array([1,1,1]),np.array([0,0,0])])])
Which is a shape of (3,4,3), when printing it I get: 这是(3,4,3)的形状,打印时我得到:
array([[[1, 0, 1],
[1, 1, 1],
[0, 1, 0],
[1, 1, 0]],
[[0, 0, 1],
[0, 0, 0],
[0, 1, 1],
[1, 0, 0]],
[[1, 0, 0],
[1, 0, 1],
[1, 1, 1],
[0, 0, 0]]])
Now I need to reshape this array to a (4,3,3)
by selecting the same index in each subarray and putting them together to end up with something like this: 现在我需要通过在每个子数组中选择相同的索引并将它们放在一起来将这个数组重新(4,3,3)
为(4,3,3)
,最终得到如下结果:
array([[[1,0,1],[0,0,1],[1,0,0]],
[[1,1,1],[0,0,0],[1,0,1]],
[[0,1,0],[0,1,1],[1,1,1]],
[[1,1,0],[1,0,0],[0,0,0]]]
I tried reshape
, all kinds of stacking and nothing worked (arranged the array like I need). 我尝试了reshape
,各种堆叠,没有任何工作(按照我的需要排列阵列)。 I know I can do it manually but for large arrays manually isn't a choice. 我知道我可以手动完成,但手动大型阵列不是一个选择。
Any help will be much appreciated. 任何帮助都感激不尽。 Thanks 谢谢
For higher dimensional arrays, transpose will accept a tuple of axis numbers to permute the axes: 对于更高维数组,转置将接受轴编号的元组来置换轴:
import numpy as np
foo = np.array([[[1, 2], [3, 4]], [[5, 6], [7, 8]], [[9, 10], [11, 12]]])
foo.transpose(1, 0, 2)
result: 结果:
array([[[ 1, 2],
[ 5, 6],
[ 9, 10]],
[[ 3, 4],
[ 7, 8],
[11, 12]]])
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