matlab .mat 转化为.txt

%load('train_data_7_302.mat', 'train_data');
load('test_data_7_302.mat', 'test_data')
fid = fopen('test_gsj.txt','a');
[r,c]=size(test_data);
for i=1:r
for j=1:c
fprintf(fid,'%6f ',test_data(i,j));
end
i
fprintf(fid,'\t');
fprintf(fid,'\r');
end
fclose(fid);