NumPy 中的 swapaxes函数

此函数互换数组的两个轴，对于1.10之后的NumPy版本，将返回交换数组的视图，该函数采用以下参数。

numpy.swapaxes(arr, axis1, axis2)

# It creates a 3 dimensional ndarray 
import numpy as np 
a=np.arange(8).reshape(2,2,2) 

print 'The original array:' 
print a 
print '\n'  
# now swap numbers between axis 0 (along depth) and axis 2 (along width) 

print 'The array after applying the swapaxes function:' 
print np.swapaxes(a, 2, 0)

其输出如下-

The original array:
[[[0 1]
 [2 3]]

 [[4 5]
  [6 7]]]

The array after applying the swapaxes function:
[[[0 4]
 [2 6]]
 
 [[1 5]
  [3 7]]]