Python: 1D 2D データを格納したリスト（stack）を作る

Making a stack of 2D and 1D data¶

In [51]:

import numpy as np

In [52]:

a1 = np.ones(6).reshape(2, 3)
a2 = a1 * 2

make a stack of two images¶

In [53]:

mat1 = np.stack([a1, a2])

add an image to the stack of two images¶

In [54]:

mat1 = np.vstack([mat1, [a1]])

In [55]:

mat1

Out[55]:

array([[[1., 1., 1.],
        [1., 1., 1.]],

       [[2., 2., 2.],
        [2., 2., 2.]],

       [[1., 1., 1.],
        [1., 1., 1.]]])

In [56]:

b1 = np.ones(6)
b2 = b1 * 2
b3 = b1 * 3

make a stack of two 1D list¶

In [57]:

mat2 = np.vstack([b1, b2])

add a 1D list to the stack of two 1D list¶

In [58]:

mat2 = np.vstack([mat2, b3])

In [59]:

mat2

Out[59]:

array([[1., 1., 1., 1., 1., 1.],
       [2., 2., 2., 2., 2., 2.],
       [3., 3., 3., 3., 3., 3.]])