[Octave-bug-tracker] [bug #47900] control pkg: does not support complex SYS objects

[anonymous]

Follow-up Comment #4, bug #47900 (project octave):

Looks like I also need this feature.

I'm trying to design an second order Sallen-Key bandpass filter from
[url=http://electronics.stackexchange.com/questions/215057/2nd-order-sallen-key-bandpass-filter-design-in-matlab
this post], slightly modified version:


s = j*w;
B=[G*R*C*w*s 0 ];
A=[(R^2)*(C^2)*(w^2)*(s^2) R*C*w*(3-G)*s 1];
sys=tf(B,A);


When trying to run this script:


   error: tf: numerator 'num' must be a real-valued, non-empty vector or a
cell of such vectors


I would be very appreciated for any info related to status of implementing of
this functionality. Thanks!

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