Accumulating Unique Set Values

I have 10 sets (each set includes 1s and 0s: 1 means element selected) and trying to find the unique sets and store its element indices. But when there is only one unique set following code gives error. How can I fix it? Thanks for the help.

[Rw,Cl] = find(unique(FSet,'rows','stable'));
UnqFS = accumarray(Rw,Cl,[], @(f) {sort(f).'});
celldisp(UnqFS)

[Jos (10584)]

What is Fset? A 10-by-N array?

Perhaps you can give a (small) example of the input and expected output?

[MByk]

Yes, it is 10 by N binary array. But i think i solved the problem like this.

[Rw,Cl] = find(unique(FSet,'rows','stable'));
if iscolumn(Rw)
  UFS = accumarray(Rw,Cl,[], @(f) {sort(f).'});
  celldisp(UFS)
end

Answer 1

[Jos (10584)]

My suggestion: first find the unique rows of Fset, and then get the column indices for each row

FSet = randi(2,10,3) -1 % example
UFS = unique(FSet,'rows','stable')
UnqFS = arrayfun(@(r) find(UFS(r,:)), 1:size(UFS,1), 'un',0)
celldisp(UnqFS)

[MByk]

Thank you.