[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Leasqr matrix singular to machine precision
From: |
Francesco Potorti` |
Subject: |
Re: Leasqr matrix singular to machine precision |
Date: |
Wed, 27 Feb 2008 10:47:34 +0100 |
>But I tried to make the calculation with a 4 system unknown and I still
>have the same error.
>
>warning: in
>/usr/lib64/octave/2.1.73/oct/x86_64-mandriva-linux-gnu/inv.oct near line
>302, column 8:
>warning: inverse: matrix singular to machine precision, rcond = 1.76168e-24
This should mean that the system is overdefined. Can you start with one
unknown, and it it converges, add one unknown at a time?
--
Francesco Potortì (ricercatore) Voice: +39 050 315 3058 (op.2111)
ISTI - Area della ricerca CNR Fax: +39 050 315 2040
via G. Moruzzi 1, I-56124 Pisa Email: address@hidden
Web: http://fly.isti.cnr.it/ Key: fly.isti.cnr.it/public.key
- Re: Leasqr matrix singular to machine precision, (continued)
- Re: Leasqr matrix singular to machine precision, Francesco Potorti`, 2008/02/21
- Re: Leasqr matrix singular to machine precision, Archambault Fabien, 2008/02/22
- Re: Leasqr matrix singular to machine precision, Francesco Potorti`, 2008/02/22
- Re: Leasqr matrix singular to machine precision, Archambault Fabien, 2008/02/22
- Re: Leasqr matrix singular to machine precision, Przemek Klosowski, 2008/02/25
- Re: Leasqr matrix singular to machine precision, Archambault Fabien, 2008/02/25
- Re: Leasqr matrix singular to machine precision, Dmitri A. Sergatskov, 2008/02/25
- Re: Leasqr matrix singular to machine precision, Archambault Fabien, 2008/02/26
- Re: Leasqr matrix singular to machine precision, Doug Stewart, 2008/02/26
- Re: Leasqr matrix singular to machine precision, Archambault Fabien, 2008/02/27
- Re: Leasqr matrix singular to machine precision,
Francesco Potorti` <=
- Re: Leasqr matrix singular to machine precision, Rolf Fabian, 2008/02/27