hello,

i would like to perform a QR decomposition of a matrix S in GSL. The QR decomposition i would like to do should look like this :

S = QR = (Q1,Q2)ยท(R1 0)^t

i don't understand how to recover my matrix Q in Gsl once i use gsl_linalg_QR_decomp (or gsl_linalg_QRPT_decomp2 ??). Does somebody knows how to do this ?

thanks very much in advance,
cheers


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