In this tutorial, we will introduce how to create a randomized matrix using python numpy.

In order to create a matrix with random numbers, we can use numpy.random.rand() function.

1. Import numpy library

import numpy as np

2. Create a 1D random matrix

random_matrix_array = np.random.rand(3)
print(random_matrix_array)

The matrix may be:

[0.13972036 0.58100399 0.62046278]

2. Create a 2D random matrix

random_matrix_array = np.random.rand(3, 4)
print(random_matrix_array)

The shape if random_matrix_array is (3, 4), it may be:

[[0.43189018 0.0903101 0.2664645 0.37512746]
[0.63474244 0.91995859 0.84270619 0.97062349]
[0.19307901 0.29623444 0.30945273 0.93585395]]

3. Create a 3D random matrix

random_3d_matrix_array = np.random.rand(3, 4, 2)
print(random_3d_matrix_array)

The shape of random_3d_matrix_array is (3, 4, 2). It may be:

[[[0.55267301 0.95526256]
[0.92689674 0.86599548]
[0.87304883 0.32868337]
[0.14190636 0.92375264]]

[[0.22447201 0.00706627]
[0.60944606 0.71169812]
[0.371652 0.48960865]
[0.77221671 0.30692933]]

[[0.11237068 0.99828592]
[0.1608211 0.47616887]
[0.5892122 0.52634281]
[0.10034398 0.36586993]]]