Hi George:

bsxfun is a built-in matlab function, which should be availabe in recent versions of matlab. It is an element-by-element operator with automatic expansion of singleton dimensions. In the example below, bsxfun will substract m from y after expanding one of them if necessary. For instance if y has say k columns and m only one column, then bsxfun(@minus, y, m) is the same as y-repmat(m,1,k);

 

Junior