Re: Plotting Errors

[Ryan Edwards-Crewe]

Thanks All,

That was the problem, I guess you can't "plot" a tf. and I found out 
what was the cause of the:

warning: dcgain: unstable system; dimensions [nc=0,nz=2,mm=1,pp=1]

it was the 2, I was reading the man and I thought that was for the 
duration of the plot. I took it out
used step and it graphed just fine.

- Crewe

Henry F. Mollet wrote:
> octave-2.9.14:17> gos=tf(1000, [1 2 100], 2);
> octave-2.9.14:18> step(gos)
> warning: dcgain: unstable system; dimensions [nc=0,nz=2,mm=1,pp=1]
> octave-2.9.14:19> 
> My results for information only.
> Henry
>
>
> on 10/10/07 3:02 PM, Doug Stewart at address@hidden wrote:
>
>   
> > If you want a step response then do
> >
> > step(gos)
> >
> > doug
> >
> > Ryan Edwards-Crewe wrote:
> >     
> > > Hi,
> > >
> > > I'm trying to plot the results of this transfer function, but when I do
> > > I get many errors.
> > >
> > > octave:6> gos=tf(1000, [1 2 100], 2);
> > > octave:7> plot(gos)
> > > error: mapper: wrong type argument `struct'
> > > error: evaluating assignment expression near line 47, column 8
> > > error: called from `__plt1__' in file
> > > `/usr/share/octave/2.9.9/m/plot/__plt1__.m'
> > > error: evaluating if command near line 58, column 4
> > > error: evaluating if command near line 56, column 2
> > > error: evaluating if command near line 55, column 7
> > > error: evaluating while command near line 44, column 5
> > > error: evaluating if command near line 34, column 3
> > > error: called from `__plt__' in file
> > > `/usr/share/octave/2.9.9/m/plot/__plt__.m'
> > > error: called from `plot' in file `/usr/share/octave/2.9.9/m/plot/plot.m'
> > > octave:7>
> > >
> > > don't know what any of this means, any help would be appreciated.
> > >
> > > - Crewe
> > > _______________________________________________
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> > >
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