[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: SVD, EIG and CHOL of a matrix
From: |
Jaroslav Hajek |
Subject: |
Re: SVD, EIG and CHOL of a matrix |
Date: |
Mon, 25 Jan 2010 09:25:26 +0100 |
On Mon, Jan 25, 2010 at 9:10 AM, Alberto Frigerio
<address@hidden> wrote:
>
> Do you mean that the previous versions of Octave, when runnig [R,p]=chol(A)
> with a not positive definite matrix, instead of giving error, returned the
> last acceptable tranformation of A before finding the error?
Yes.
> Because I tried
> to do the same thing, but I don't have the same results
> http://old.nabble.com/file/p27303247/cholmio.m cholmio.m
> http://old.nabble.com/file/p27303247/Results.txt Results.txt
>
The factorization is done by Octave on the upper triangle, whereas you
seem to work on the lower part, hence probably the difference.
--
RNDr. Jaroslav Hajek, PhD
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz
- Re: SVD, EIG and CHOL of a matrix, (continued)
- Re: SVD, EIG and CHOL of a matrix, Carlo de Falco, 2010/01/19
- Re: SVD, EIG and CHOL of a matrix, Jaroslav Hajek, 2010/01/20
- Re: SVD, EIG and CHOL of a matrix, Alberto Frigerio, 2010/01/20
- Re: SVD, EIG and CHOL of a matrix, Jaroslav Hajek, 2010/01/20
- Re: SVD, EIG and CHOL of a matrix, Alberto Frigerio, 2010/01/22
- Re: SVD, EIG and CHOL of a matrix, Carlo de Falco, 2010/01/22
- Re: SVD, EIG and CHOL of a matrix, Jaroslav Hajek, 2010/01/22
- Re: SVD, EIG and CHOL of a matrix, Alberto Frigerio, 2010/01/25
- Re: SVD, EIG and CHOL of a matrix,
Jaroslav Hajek <=
- Re: SVD, EIG and CHOL of a matrix, Alberto Frigerio, 2010/01/27