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Re: I am finding a crash with sys1=tf(1,[1 3 2])


From: Lukas Reichlin
Subject: Re: I am finding a crash with sys1=tf(1,[1 3 2])
Date: Tue, 22 May 2012 22:38:50 +0200

On 22.05.2012, at 21:39, Doug Stewart wrote:

> 
> 
> On Tue, May 22, 2012 at 3:24 PM, Lukas Reichlin <address@hidden> wrote:
> On 22.05.2012, at 20:14, Doug Stewart wrote:
> 
> > Could someone try this with 3.7.0+
> > I am finding a crash with
> > sys1=tf(1,[1 3 2])
> >
> > You will need the control pkg.
> >
> >
> > --
> > DAS
> 
> octave:1> sys1=tf(1,[1 3 2])
> 
> Transfer function 'sys1' from input 'u1' to output ...
> 
>            1
>  y1:  -------------
>      s^2 + 3 s + 2
> 
> Continuous-time model.
> octave:2>
> 
> I am using Octave 3.6.2-rc0. Have you tried a fresh install of the control 
> package? Possibly the oct-files need to be rebuilt.
> 
> Lukas
> 
> I know that it works with 3.6.1 and now 3.6.2 what I asked for was the 3.7.0+ 
> development branch.
>  Does any one have a recent compile.
> 
> 
> -- 
> DAS

See whether

        is_real_vector (1)
        is_real_vector ([1 3 2])

works. is_real_vector is the only oct-file from control which is called by tf.
The code is very simple:
http://octave.svn.sourceforge.net/viewvc/octave/trunk/octave-forge/main/control/src/is_real_vector.cc?revision=7855&view=markup

Have you tried a fresh install of the control package?

Lukas



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