TITLE: How to generate orthogonal matrix in Octave?
QUESTION [7 upvotes]: How to generate an orthogonal matrix in Octave?
I saw something like that
gallery('orthog',n,k)

in matlab, but I can't find any similar function in Octave.
Thanks!

REPLY [7 votes]: You can apply QR to a given random matrix: [q, r] = qr (a). The matrix q will be orthogonal.
You can use orthogonal basis computation: Q = orth(A) on a random matrix A.