function z=getord_vec(x,y)

% GETORD_VEC        Takes every (x+1)-th step of the vector, y
%
%   z = GETORD_VEC(x,y)
%
%   Inputs:
%       x   : record every (x+1)-th step 
%       y   : input vector (can have multiple colums)
%
%   Output:
%       z   : output vector
%
%
% (C) Gaussian Process SSTS Toolbox 1.0
% (C) Copyright 2006-2007, Keith Neo <keith.neo@nuim.ie>
%                          http://www.hamilton.ie


if x==0
    z=y;
else
    x1=x+1;
    D0=ceil(size(y,1)/x1);
    z=zeros(D0,size(y,2));
    for k=1:D0
        pp=x1*k-x;
        z(k,:)=y(pp,:);
    end
end