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这两天在搞theano,要把mat文件转成pickle格式载入python。
matlab是把一维数组当做n*1的矩阵的,但numpy里还是有vector和matrix的区别,theano也是对二者做了区分。
直接把代码贴出来吧,好像也没什么可讲的 = =
from scipy.io import loadmat import numpy, cpickle data_dict=loadmat(r'e:\dataset\cifar10\cifar10_small.mat') #need an r! my_array=numpy.array([1,1]) for key in data_dict.keys(): if type(data_dict[key]) == type(my_array): #print matrix information print key, type(data_dict[key]), print data_dict[key].shape #shape(n,1) (matrix in theano) -> shape(n,) (vector in theano) print data_dict['ytr'].shape ytr=numpy.hstack(data_dict['ytr']) yte=numpy.hstack(data_dict['yte']) yte=numpy.hstack(data_dict['yte']) print ytr.shape train_set=(data_dict['xtr'],ytr) valid_set =(data_dict['xte'],yte) test_set =(data_dict['xte'],yte) output = open('cifar10_small_v.pkl', 'wb') cpickle.dump(train_set, output) cpickle.dump(valid_set, output) cpickle.dump(test_set, output) output.close() print 'save is done' pkl_file = open('cifar10_small_v.pkl', 'rb') data1 = cpickle.load(pkl_file) # is train_set data2 = cpickle.load(pkl_file) # is valid_set data3 = cpickle.load(pkl_file) # is test_set print type(data1[1]),data1[1].shape pkl_file.close()
以上这篇python读取mat文件,并保存为pickle格式的方法就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持移动技术网。
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