MATLAB: Save ensure automatic renaming

fileMATLABsavestrings

I am running a script repeatedly each time changing a few parameters, each time evaluation takes at least a few hours. At the end of my code, I put
save('myfilename.mat').
Now, each time, I have to ensure I change myfilename to avoid any data gets overwritten. Is there a way to ensure that if 'myfilename.mat' already exists, matlab saves the second .mat file as 'myfilename(1).mat' etc?

Best Answer

There is no automatic way to do that. You can write your own code for the purpose.
filenum = 0;
while true
    filenum = filenum + 1;
    filename = sprintf('myfilename_%d.mat', filenum);
    if ~exist(filename, 'file'); break; end
end
save(filename);
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