A little while back, J.M. suggested using the Stewart algorithm for generating $n$ by $n$ pseudo random orthogonal matrices in $O(n^2)$ time. He further noted that this methodology is implemented in Nick Higham's matrix computation toolbox (matlab). Now this package contains a bunch of .m files. Could anyone direct me to which one implements the pseudorandom orthogonal matrix generator? Alternatively, would anyone know of a R implementation of this algorithm?
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