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Re: bode not working: sys undefined


From: Leo Britto
Subject: Re: bode not working: sys undefined
Date: Fri, 9 Oct 2009 23:30:28 -0700 (PDT)

Hi Uwe,

It looks like you didnt define the "sys" in the bode command. You can try to 
read here:

http://www.obihiro.ac.jp/~suzukim/masuda/octave/html/octave_127.html#SEC192

Look at the "State space system interface functions" for example.

Good luck.

Leo.

--- On Fri, 10/9/09, Uwe Dippel <address@hidden> wrote:

> From: Uwe Dippel <address@hidden>
> Subject: bode not working: sys undefined
> To: address@hidden
> Date: Friday, October 9, 2009, 9:00 PM
> (I don't seem to be all too lucky
> with my efforts on octave.  :(  )
> 
> I tried one example (rather simple) from
> https://prof.hti.bfh.ch/sha1/Octave/index/f/bode.html
> a basic Bode diagram.
> 
> This is what I get:
> 
> bode(sys,[],"y_3", {"u_1","u_4"});
> error: `sys' undefined near line 3 column 6
> error: evaluating argument list element number 1
> error: evaluating argument list element number 1
> 
> Google didn't help. Since I am still a newbie, I might
> missing some 
> initial setup, have to do some basic reading. Please tell
> me where and 
> what. I am on 3.2.2 as recommended.
> By the way, we did create some data structure as indicated
> in that site, 
> but it resulted in other, different, errors. Matlab has no
> 'sys' there 
> in the syntax.
> Octave seems to be not all too compatible after all?
> 
> Let's start with this bode problem, though, please!
> 
> Uwe
> 
> 
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