Re: eig from Matlab to Octave

[Riccardo Corradini]

Am I right if  I use
[D, RCOND] =  det (A)
istead for Matlab rcond(A)?
Finally 
I used this function I found in the mailing list archive
## 2001-03-07 Ross Lippert
##   * adapted from rlab, using a slightly different similarity transform
## 2001-03-08 Paul Kienzle
##   * cleanup; add Rolf Fabians comment about direct csf computation

function [U, T] = rsf2csf (U, T)

  if (nargin != 2)
    usage ("[U,T] = rsf2csf (U, T)");
  endif

  ## Find complex unitary similarities to zero the subdiagonal elements.
  n = columns (T);
  if (n > 1)
    idx = find (diag (T, -1))';
    for m = idx
      k = m:m+1;
      d = eig (T (k, k));
      cs = [ T(m+1,m+1)-d(1), -T(m+1,m) ];
      cs = cs / norm
 (cs);
      G = [ conj(cs); cs(2), -cs(1) ];
      T (k, m:n) = G' * T (k, m:n);
      T (1:m+1, k) = T (1:m+1, k) * G;
      U (:, k) = U (:, k) * G;
      T (m+1, m) = 0;
    endfor
  endif

endfunction  

Why is not included in Octave-forge?
Thanks
Riccardo 

David Bateman <address@hidden> ha scritto:
>  Riccardo Corradini wrote:
> > Hi all,
> > I am trying to use the e4 toolbox for matlab in octave 2.9.13
> > but unfortunately
> > I found the following instruction
> > [W,d] = eig(T,Y);
> > not compatible with eig of octave
> > Are there any hints concerning this issue?
> > Thanks a lot to all
> >
>  Respectfully
> > Riccardo
> >
> > ------------------------------------------------------------------------
> > ------------------------------------------------------------------------
> >
> Use the "qz" function
>
> D.
>
> -- 
> David Bateman                                address@hidden
> Motorola Labs - Paris                        +33 1 69 35 48 04 (Ph) 
> Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
> 91193 Gif-Sur-Yvette FRANCE                  +33 1 69 35 77 01 (Fax) 
>
> The information contained in this communication has been classified as: 
>
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> [ ] Motorola Internal Use Only 
> [ ] Motorola Confidential Proprietary

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