numpy.hstack


numpy.stack函数的变量用于堆叠,以便水平生成单个数组。

import numpy as np
a = np.array([[1,2],[3,4]])

print 'First array:'
print a
print '\n'  
b = np.array([[5,6],[7,8]])

print 'Second array:'
print b
print '\n'  

print 'Horizontal stacking:'
c = np.hstack((a,b))
print c
print '\n'

它会产生以下输出

First array:
[[1 2]
 [3 4]]

Second array:
[[5 6]
 [7 8]]

Horizontal stacking:
[[1 2 5 6]
 [3 4 7 8]]