Numpy

• numpy创建数组

1. 　　使用np.ndarray()创建　　

2. 　　np.random.randn(3,4) 【生成的数据符合正态分布】

• numpy中的function

1. stack()：Join a sequence of arrays along a new axis

    

2. hstack()：Stack arrays in sequence in horizontally(column wise)

    

3. numpy.vstack(tup)，等价于np.concatenate(tup, axis=0) if tup contains arrays thatare at least 2-dimensional.

   

    

4. numpy.dstack：Stack arrays in sequence depth wise(along third dimension)

    

5. numpy.concatenate函数，函数原型numpy.concatenate((a1,a2..),axis=0)

    

Numpy

原文：http://www.cnblogs.com/lianjie/p/7646960.html