how to get the first few lines of an ndarray 3d

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Kyan
25 Feb 2020
1>>> import numpy as np
2>>> v = np.array(np.arange(24)).reshape(2,3,4)
3>>> v
4array([[[ 0,  1,  2,  3],
5        [ 4,  5,  6,  7],
6        [ 8,  9, 10, 11]],
7
8       [[12, 13, 14, 15],
9        [16, 17, 18, 19],
10        [20, 21, 22, 23]]])
11>>> v[:, 1, 3]
12array([ 7, 19])
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Luca
23 Sep 2019
1In [11]: a[:,:2]
2Out[11]: 
3array([[-0.57098887, -0.4274751 ],
4       [-0.22279713, -0.51723555],
5       [ 0.67492385, -0.69294472],
6       [ 0.41086611,  0.26374238]])
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