有没有办法在 Python 中更改二维数组的轴？

Question

我想更改矩阵的轴x和轴。y例如，我想将每个嵌套数组的第一个元素存储在第一行，将每个嵌套数组的第二个元素存储在第二行等...例如：list = [[1,2,3,4,5,6]         [7,8,9,10,11,12]         [13,14,15,16,17,18]         [19,20,21,22,23,24]]我想改成这样：new list = [[1,7,13,19]             [2,8,14,20]             [3,9,15,21]             [4,10,16,22]             [5,11,17,23]             [6,12,18,24]]注意：这不是旋转

Answer 1

• 使用numpy.ndarray.T，这与numpy.transpose

• 
  

import numpy as np

data = [[1,2,3,4,5,6],

        [7,8,9,10,11,12],

        [13,14,15,16,17,18],

        [19,20,21,22,23,24]]

# convert the list of lists to an array

data = np.array(data)

# transpose the array

data_t = data.T

# print(data_t)

array([[ 1,  7, 13, 19],

       [ 2,  8, 14, 20],

       [ 3,  9, 15, 21],

       [ 4, 10, 16, 22],

       [ 5, 11, 17, 23],

       [ 6, 12, 18, 24]])