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1 function [AEF,SHIFTMAT3d] = order(A,AE,N,L);
  2 
  3 SHIFTMAT3d = zeros(N,L,L);
  4 SHIFTMAT = zeros(N,L);
  5 
  6 for k=0:L-1,
  7         for l=0:L-1,
  8                 for shift=0:N-1,
  9                         SHIFTMAT(shift+1,l+1) = sum(abs(A(:,k+1) - circshift(AE(:,l+1),shift)).^2);
 10                 end;
 11         end;
 12         SHIFTMAT3d(:,:,k+1) = SHIFTMAT;
 13 end;
 14 
 15 AEF = zeros(N,L);
 16 
 17 for k=0:L-1,
 18         minimum = min(SHIFTMAT3d(:,:,k+1));
 19         if minimum(1) < minimum(2);
 20                 for l=0:N-1,
 21                         if SHIFTMAT3d(l+1,k+1,k+1) == min(SHIFTMAT3d(:,1,k+1));
 22                                 shift = l;
 23                                 AEF(:,k+1) = circshift(AE(:,k+1),shift);
 24                                 break;
 25                         end;
 26                 end;
 27         else
 28                 for l=0:N-1,
 29                         if SHIFTMAT3d(l+1,k+1,k+1) == min(SHIFTMAT3d(:,2,k+1));
 30                                 shift = l;
 31                                 AEF(:,k+1) = circshift(AE(:,k+1),shift);
 32                                 break;
 33                         end;
 34                 end;
 35         end;
 36 end;