A subsetting function for matlab for Thermal Systems

subset.m

function xn = subset(x,n)
%subset(x,n)
%sub sets array x to xn with every nth row
%example: 
%> x=[1:10];
%> subset(x,2)
%  ans = [2 4 6 8]
xn = x(:,1);
for i = 1:n:size(x,2)
    xn = [xn x(:,i)];
end
end