采用numpy快速将两个矩阵或数组合并成一个数组:
import numpy as np
数组
a = [[1,2,3],[4,5,6]]
b = [[1,1,1],[2,2,2]]
1、数组纵向合并
1)
c = np.vstack((a,b))
c =
array([[1, 2, 3],
[4, 5, 6],
[1, 1, 1],
[2, 2, 2]]
2)
c = np.r_[a,b]
c = array([[1, 2, 3],
[4, 5, 6],
[1, 1, 1],
[2, 2, 2]])
2、数组横向合并
1)、
d = np.hstack((a,b))
d = array([[1, 2, 3, 1, 1, 1],
[4, 5, 6, 2, 2, 2]])
2)、
d = np.c_[a,b]
d = array([[1, 2, 3, 1, 1, 1],
[4, 5, 6, 2, 2, 2]])