RE: bode not working: sys undefined

[dastew]

Here is an example:


n=6
d=[1 2 6]
sys=tf(n,d);
sysout(sys)
bode(sys)

doug



> Date: Sat, 10 Oct 2009 12:00:14 +0800
> From: address@hidden
> To: address@hidden
> Subject: bode not working: sys undefined
>
> (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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