MYUNIQUE is a function to find unique elements in a numeric vector in the order in which they appear first or last which is determined by "mode" (default is first). The function is also outputs the indices "ndx" of unique elements and number of occurances of that elements in "h".

% Example:
% >> a=[9 3 6 2 7 1 2 1 1 1 9 9 3 3];
% >> [b ndx h]=myunique(a)
% b =
%
% 9 3 6 2 7 1
% ndx =
%
% 1 2 3 4 5 6
% h =
%
% 3 3 1 2 1 4
%
% >> myunique(a,'last')
% ans =
%
% 6 7 2 1 9 3