[Octave-bug-tracker] [bug #44930] signal package: zplane shows non-existent poles and zeros

[Mike Miller]

Update of bug #44930 (project octave):

                Severity:              3 - Normal => 2 - Minor              
              Item Group:        Incorrect Result => Matlab Compatibility   
                  Status:                    None => Need Info              
                 Release:               4.0.0-rc3 => other                  
        Operating System:               GNU/Linux => Any                    
                 Summary: signal/zplane.m shows non-existent poles and zeros
=> signal package: zplane shows non-existent poles and zeros

    _______________________________________________________

Follow-up Comment #1:

Thanks for your bug report. Do you have access to Matlab to test this for
compatibility? What does Matlab display for an empty denominator argument?
Since it is intended to be used with filter coefficients, an implied
denominator of 1 makes sense as it behaves now.

As a workaround, you can do what you want with:


zplane (roots ([1, 2, 3]));


    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?44930>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/