在特定行上堆叠二维数组
Stack 2d array on specific row
我有两个 numpy 二维数组,我想将它们堆叠起来,但要将它们堆叠到我要放置它们的特定行中。
a = ([[4, 2],
[7, 3],
[1, 8]])
b = ([[10, 6], (put in 3rd row)
[9, 5]]) (put in 5th row)
Expected output = ([[4, 2],
[7, 3],
[10, 6],
[1, 8],
[9, 5]])
在 python 中最快的方法是什么?
对于您的特定示例:
import numpy as np
a = np.array([[1, 2],[3, 4],[7, 8]])
b = np.array([[5, 6],[9, 10]])
np.insert(a,[2,3],b,axis=0)
输出:
array([[ 1, 2],
[ 3, 4],
[ 5, 6],
[ 7, 8],
[ 9, 10]])
我有两个 numpy 二维数组,我想将它们堆叠起来,但要将它们堆叠到我要放置它们的特定行中。
a = ([[4, 2],
[7, 3],
[1, 8]])
b = ([[10, 6], (put in 3rd row)
[9, 5]]) (put in 5th row)
Expected output = ([[4, 2],
[7, 3],
[10, 6],
[1, 8],
[9, 5]])
在 python 中最快的方法是什么?
对于您的特定示例:
import numpy as np
a = np.array([[1, 2],[3, 4],[7, 8]])
b = np.array([[5, 6],[9, 10]])
np.insert(a,[2,3],b,axis=0)
输出:
array([[ 1, 2],
[ 3, 4],
[ 5, 6],
[ 7, 8],
[ 9, 10]])