how to combine two arrays in python
# concatenate 2 numpy arrays: row-wise
>np.concatenate((array2D_1, array2D_2))
array([[ 0, 1, 2],
[ 3, 4, 5],
[ 6, 7, 8],
[10, 11, 12],
[13, 14, 15],
[16, 17, 18]])how to combine two arrays in python
# concatenate 2 numpy arrays: row-wise
>np.concatenate((array2D_1, array2D_2))
array([[ 0, 1, 2],
[ 3, 4, 5],
[ 6, 7, 8],
[10, 11, 12],
[13, 14, 15],
[16, 17, 18]])np.multiply
>>> x1 = np.arange(9.0).reshape((3, 3))
>>> x2 = np.arange(3.0)
>>> np.multiply(x1, x2)
array([[ 0., 1., 4.],
[ 0., 4., 10.],
[ 0., 7., 16.]])shuffle two arrays the same way python
>>> import numpy as np
>>> x = np.arange(10)
>>> y = np.arange(9, -1, -1)
>>> x
array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
>>> y
array([9, 8, 7, 6, 5, 4, 3, 2, 1, 0])
>>> s = np.arange(x.shape[0])
>>> np.random.shuffle(s)
>>> s
array([9, 3, 5, 2, 6, 0, 8, 1, 4, 7])
>>> x[s]
array([9, 3, 5, 2, 6, 0, 8, 1, 4, 7])
>>> y[s]
array([0, 6, 4, 7, 3, 9, 1, 8, 5, 2])Copyright © 2021 Codeinu
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