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Re: [Help-gsl] help with QR decomposition


From: Brian Gough
Subject: Re: [Help-gsl] help with QR decomposition
Date: Mon, 28 Feb 2005 16:03:36 +0000

matt hall writes:
 > i have recently installed gsl and am currently using it to solve linear
 > ....
 > where n(=N),m are the dimensions of the matrix M and b is a vector of  rhs
 > values. this works perfectly well when n==m (square matrix), but as soon
 > as i try to solve a system with a non-square matrix i receive the
 > following output:
 > 
 > gsl: qr.c:114: ERROR: QR matrix must be square

Use the QR lssolve function if you want to solve for M>N (see the
reference manual for details).

-- 
regards,

Brian Gough

Network Theory Ltd,
Publishing Free Software Manuals --- http://www.network-theory.co.uk/




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