From bug-octave-request at bevo dot che dot wisc dot edu Mon Feb 16 09:25:23 2004
Subject: Re: tf2zp causes segfault (error in __sysdefstname__.m)
From: johannes <qaz99af at 123mail dot org>
To: bug-octave at bevo dot che dot wisc dot edu
Date: Mon, 16 Feb 2004 06:18:20 -0600

tf2sys has the same problem..

octave:1> sys=tf2sys([2 1],[1 2 1],0.1);
warning: in /usr/share/octave/2.1.53/m/control/system/__sysdefioname__.m near 
line 47, column 10:
warning: list objects are deprecated; use cell arrays instead
panic: Segmentation fault -- stopping myself...


On Thursday 05 February 2004 02:22, Paul Kienzle wrote:
> For the purposes of the signal processing package, the tf2zp
> that I wrote are sufficient.  I do not know if they are adequate
> for the control systems toolbox.  This issue has been raised
> a few times in the past several years.  E.g.,
>
> http://www.octave.org/octave-lists/archive/bug-octave.2001/msg00171.html
>
>
> Paul Kienzle
> pkienzle at users dot sf dot net
>
> On Feb 4, 2004, at 5:13 PM, Dmitri A. Sergatskov wrote:
> > John W. Eaton wrote:
> >> Since tf2zp is part of Octave, the fix should go in the Octave
> >> sources.  Did I miss a patch, or was it not submitted?  If I missed
> >> it, can someone please make one for the current Octave sources and
> >> submit it?
> >
> > Well files tf2zp.m and zp2tf.m in octave proper are written by
> > A.S.Hodel and dated by 1998.
> > The same files in octave-forge/FIXES are written by Paul Kienzle
> > and dated 1999. The files look quite different, diff is longer
> > then both of them together.
> > I assume there is a reason while those were not copied over
> > since 1999.
> >
> >> Thanks,
> >> jwe
> >
> > Dmitri.
> >
> >
> >
> > -------------------------------------------------------------
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> >
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Octave is freely available under the terms of the GNU GPL.

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