QX factorization of centrosymmetric matrices

We show how the factorization A=QX, introduced in Burnik (2015) [2], of a real centrosymmetric m×n matrix A into a centrosymmetric orthogonal m×m matrix Q and a centrosymmetric m×n matrix X with a double-cone structure can be directly obtained via standard QR factorizations of two matrices about half the size of A. Examples and a Matlab code are included.