MATLAB: How to convert files on the workspace to mat file ?

#face recognition

I have a file on my workspace named effLBP containing extracted feature It's a 592*896*3uint8 matrix
1. How do I convert this file to .mat file ??
2.How do I convert the .mat file to csv or arff file format?
Please help.
Thanks

Best Answer

ARFF: https://www.mathworks.com/matlabcentral/fileexchange/45954-write-data-in-arff-format
To load the uint8 data you need to know what order it was written in. The basic setup is
   fid = fopen('effLBP.dat', 'r');
   data = fread(fid, 592*896*3, '*uint8');
   fclose(fid);
After that you have to start re-arranging the data until it makes sense, such as
data123 = reshape(data, 592, 896, 3);
data213 = permute(reshape(data, 896, 592, 3), [2 1 3]);
data132 = permute(reshape(data, 592, 3, 896), [1 3 2]);
data321 = permute(reshape(data, 3, 896, 592), [3 2 1]);
and see which one looks right when you image() it.
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