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Re: chol?
From: |
Vic Norton |
Subject: |
Re: chol? |
Date: |
Sat, 15 Apr 2006 21:21:28 -0400 |
Well thanks Doug, Joe, Marius, Jordi, ...
Now I know it's my screwed up system. I love Macintoshes, but I hate
their incompatibilty with the real world.
And now I remember what the Cholesky factor is. You start with an inner
product and an arbitrary basis and construct an orthogonal basis from
that. The first orthogonal vector is a multiple of the first basis
vector. The second orthogonal vector a linear combination of the first
two basis vectors, etc. The Choleksy factor is produced by choosing the
standard delta-ij basis to start with.
Oh well, at least the Octave stuff that is important to me does work on
my system.
Regards,
Vic
On 4/15/06, at 5:35 PM -0400, address@hidden wrote:
> octave:1> C = [36 24; 24 25];
> octave:2> C
> C =
>
> 36 24
> 24 25
>
> octave:3>
> octave:3> chol(C)
> ans =
>
> 6 4
> 0 3
> Upper Triangular
On 4/15/06, at 4:16 PM -0400, Vic Norton wrote:
> I start with the matrix
> octave> C = [36 24; 24 25];
> and do
> octave> chol(C);
> After waiting for a while I get
> panic: Bus error -- stopping myself...
> attempting to save variables to `octave-core'...
> save to `octave-core' complete
> Bus error
> vic$
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-------------------------------------------------------------
- chol?, Vic Norton, 2006/04/15
Message not available
Re: chol?, Andy Pugh, 2006/04/16