find guite the same elements

Hello everyone

I have a mXn matrix called Theseis that it has the above elements in spread around the table and in any other point has 0.

1056 2629 
1056 2630 
1056 2631 
1057 2629 
1057 2630 
1057 2631 
1058 2629 
1058 2630 
1058 2631 
1419 3663 
1419 3664 
1420 3663 
1420 3664 
1421 3663 
1421 3664 
1757 2644 
1758 2643 
1758 2644 
1759 2643 
1759 2644 
2427 3664 
2427 3665 
2428 3664 
2428 3665 
2429 3664 
2429 3665 
2613 2646 
2614 2646 
2615 2645 
2615 2646

Is there a way to find which elements are the same(except the zeros) or guite the same(eg these are guite the same:

                             2613 2646 
                             2614 2646 
                             2615 2645 
                             2615 2646

) and delete them and leave only one of each group. eg the new maytix will be

1056 2631 
1419 3663

.......................etc

Answer 1

[Konstantinos Kontos]

The answer for everyone who wants it is quite simple!

for i=1:x-200

for j=1:y-800

   if mean2(Pattern_epikef==Foto2(i:i+23,j:j+75) ) >= 0.87 

   Theseis(i-2:i+2,j-2:j+2) = 0;

     Theseis(i,j)=1; % ana vreis omoio kommati dose 1 ston pinaka
   end

end
end

Answer 2

[Elad]

let say you have 2 vector A ,B (like your columns there) you can do something like : [C, ia] = unique(A); for k = 1:length(ia) D(k)=B(ia(k)) end then do the same with D with respect to C and you are done. for M x N you can extend this to run on all the columns ..,