python-reshape函数

使用numpy的reshape函数可以改变数组形状

X_reshape=numpy.reshape(X, newshape, order=’C’)

1. 将m*n维数组按行拼接为行向量

import numpy as np
X=np.array([[1, 2, 3],[4, 5, 6]])
X_reshape=np.reshape(X,6,order='C') #m*n=6, 'C'表示按行拼接