[bug #68196] [octave forge] (control) Wrong phase in bode plot

Luiz Antonio Maccari Junior <[email protected]> Fri, 12 Jun 2026 09:07:39 -0400 (EDT)

Newsgroups	gmane.comp.gnu.octave.bugs
Message-ID	<[email protected]>

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Follow-up Comment #11, bug #68196 (group octave):

Hi I think this Bug is present yet:

I have the following example:




num = [                0;
                       0;
   2.052877715426585e+09;
   4.416784109977014e+13;
   1.719831064785571e+17;]'

den = [ 1.000000000000000e+00;
   8.380906856780281e+04;
   2.269817212624148e+08;
   4.344755797517798e+12;
                       0;]'

TF5 = tf(num,den)

bode(TF5)



My output is:

(file #)

The expected behavior is the phase range around to -90º. However it starts
around -360° + 90° =-170



(file #58709)

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