
From:  Doug Stewart 
Subject:  Re: PROBLEMS with transfer function calculated by the arx function 
Date:  Sun, 24 Mar 2019 10:24:50 0400 
HiWhen applying the following sequence of commandsxrun=xxx2((k1)*nsamp+1:k*nsamp);yrun=yyy2((k1)*nsamp+1:k*nsamp);
DAT = iddata (xrun', xrun' , dt);
[SYS, X0] = arx (DAT, 'NA', NA, 'NB', NB);W=2*pi*frv;[MAG, PHA, W] = bode (SYS, W);MAG vs frequency should be 1 at all frequencies andPHA should be zero at all frequenciesIt doesn't happenHave you any explanation?It is any other way to calculate the transfer function from SYS?
Thanks in advanceZeev Sherf
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