There have been lots of cases where I'll want to look, in a specific order, at subjects in a larger set. Setdiff Intersect and Union are the exact operations I want, but unsorted. I coded up Unique just for good measure.
These are relatively rough m-files, w/ little or no help functions, but they're very simple and identical to the built-in Matlab functions, just without sorting.
I changed the 2nd and 3rd outputs of union to actually be useful.
Enjoy and if you'd like any changes, leave a comment and I'll implement them.
Don Vaughn (2021). Unsorted Set Operations (https://www.mathworks.com/matlabcentral/fileexchange/30854-unsorted-set-operations), MATLAB Central File Exchange. Retrieved .
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