numpy 学习之 np.c_的用法

np.c_ 用于连接两个矩阵

np.c 中的c 是 column(列)的缩写，就是按列叠加两个矩阵，就是把两个矩阵左右组合，要求行数相等。

# -*- coding: utf-8 -*
import numpy as np

x_1 = np.array([1, 2, 3, 4, 5, 6]).reshape(2, 3)
x_2 = np.array([3, 2, 1, 8, 9, 6]).reshape(2, 3)
x_new = np.c_[x_1,x_2]
print("x_1 = \n",x_1)
print("x_2 = \n",x_2)
print("x_new = \n",x_new)

结果输出如下：

x_1 = 
 [[1 2 3]
  [4 5 6]]
x_2 = 
 [[3 2 1]
  [8 9 6]]
x_new = 
 [[1 2 3 3 2 1]
  [4 5 6 8 9 6]]