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Re: pole/zero plot for TransferFunctionModel in the control system package?

• To: mathgroup at smc.vnet.net
• Subject: [mg125430] Re: pole/zero plot for TransferFunctionModel in the control system package?
• From: Suba Thomas <subat at wolfram.com>
• Date: Tue, 13 Mar 2012 03:08:58 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

There is an example in the v8 documentation 
(http://wolfram.com/xid/0tp87ouzgrb3tg-gzw7gm), and the plan is to have 
the built-in version in a future release.

Thanks,
Suba Thomas
Wolfram Research


Nasser M. Abbasi wrote:
> I was looking at the functions in the control systems, which
> were added in V 8, and there seems to be a missing an important
> plot function to generate automatically a map of the locations
> of the poles and zeros for a transfer function (continuous or
> discrete time).
>
> Unless I overlooked it, I hope this will be added in V 9.
>
> I know I can generate such a plot myself by some extra coding,
> but I think a build-in function to do this would be a better solution
> similar to all the other useful standard control systems plot functions
> listed here
>
> http://reference.wolfram.com/mathematica/guide/ClassicalAnalysisAndDesign.html
>
> Another software has this function as standard in their control
> systems toolbox and it is called pzmap (for googling and
> reference to what this command do).
>
> thanks,
> --Nasser
>
>
>