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Re: [Help-gsl] QR decomposition...

From: Till Isambert
Subject: Re: [Help-gsl] QR decomposition...
Date: Mon, 19 Dec 2005 10:17:21 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040916

Brian Gough wrote:
Till Isambert writes:
> 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 ?

See the documentation for gsl_linalg_QR_unpack

actually i have solved the problem since :o, thank you


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