[Octave-bug-tracker] [bug #45918] control: Nyquist plot is incorrect

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?45918>

                 Summary: control: Nyquist plot is incorrect
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 10 Sep 2015 06:13:11 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0
        Operating System: GNU/Linux

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Details:

The Nyquist plot of the system defined by tf([-10 10], [1 1 0]) is incorrect,
I did double check it with both pencil and paper and the online Wolfram Alpha
tool.




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