python怎样读mat文件格式

mat数据格式是Matlab的数据存储的标准格式，在python中可以使用scipy.io中的函数loadmat()读取mat文件。

importscipy.ioasscio

path='ex3data1.mat'
data=scio.loadmat(path)
type(data)
dict#data是字典格式
data.keys()#查看字典的键
dict_keys(['__header__','__version__','__globals__','X','y'])
X1=data['X']#选择需要的数据；数组格式
array([[0.,0.,0.,...,0.,0.,0.],
[0.,0.,0.,...,0.,0.,0.],
[0.,0.,0.,...,0.,0.,0.],
...,
[0.,0.,0.,...,0.,0.,0.],
[0.,0.,0.,...,0.,0.,0.],
[0.,0.,0.,...,0.,0.,0.]])

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