how can I fix this?

here is a code to get the permutation of each rows of a matrix

    a=[ 1     2     2
           2     2     3];
    for ii=1:size(a,1)
    q(ii,:,:)=unique(perms(a(ii,:)),'rows');
    end
    out = reshape(q,[],size(a,2),1)

out =

       1     2     2
       2     2     3
       2     1     2
       2     3     2
       2     2     1
       3     2     2

but if consider this matrix

   A=[0,0,0;2,2,1;3,0,0]

it gives an error

??? Assignment has more non-singleton rhs dimensions than non-singleton
subscripts

Why? and how can I fix it?

Answer 1

[Matt J]

One way,

    q=cell(size(a,1),1);
    for ii=1:size(a,1)
     q{ii}=unique(perms(a(ii,:)),'rows');
    end

    out=cell2mat(q);