[Octave-bug-tracker] [bug #55244] [octave forge] (control) error from mag2db(...) within bode(...) when using minreal on the input transfer function

[Mike Miller]

Update of bug #55244 (project octave):

                  Status:                    None => Confirmed              
                 Release:                   4.0.0 => 4.4.1                  
                 Summary: error from mag2db(...) within bode(...) when using
minreal on the input transfer function => [octave forge] (control) error from
mag2db(...) within bode(...) when using minreal on the input transfer function

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Follow-up Comment #2:

This bug is confirmed for me with Octave 4.4.1 and control 3.1.0:


pkg load control
Lf = 330e-6;
Cf = 470e-6;
s = tf ('s');
Z0min = minreal (s * Cf / (1 + s^2 * Lf * Cf))
bode (Z0min)


The full error (original post is missing the last line):


error: Invalid call to mag2db.  Correct usage is:

 -- Function File: DB = mag2db (MAG)
error: called from
    print_usage at line 91 column 5
    mag2db at line 44 column 5
    bode at line 73 column 12


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