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Danis
Asked:2020-09-23 01:45:33 +0000 UTC2020-09-23 01:45:33 +0000 UTC

如何在numpy中拉伸矩阵

  • 772

如何在numpy中拉伸矩阵

例如

[[0, 1],
 [2, 3]]

变成

[[0, 0, 1, 1],
 [0, 0, 1, 1],
 [2, 2, 3, 3],
 [2, 2, 3, 3]]
python

1 个回答

  1. Best Answer
    a = np.array([[0, 1], [2, 3]] )

# array([[0, 1],
#        [2, 3]])

    np.pad(a, ((1, 1), (1, 1)), mode="symmetric")

# array([[0, 0, 1, 1],
#        [0, 0, 1, 1],
#        [2, 2, 3, 3],
#        [2, 2, 3, 3]])
    • 2

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