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From: "Rajiv Singh" <Rajiv.SinghNoSpam@mathworks.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: ident vs fdident
Date: Tue, 28 Jul 2009 10:10:54 -0400
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System Identification Toolbox handles estimation of transfer function from 
freqyency response data, since version 6.0. For transfer functions, try OE 
and IDPROC/PEM.

Rajiv

"pietro " <bracardi82@email.it> wrote in message 
news:h4mf1q$t60$1@fred.mathworks.com...
>I have only system identification toolbox. I have frequency response data 
>and i have to identificate the transfer function. I can do that with system 
>identification toolbox or it is necessary to have frequency domain 
>identification toolbox?