[Octave-bug-tracker] [bug #45810] zp2sos error when calling cplxpair

[Charles Praplan]

URL:
  <http://savannah.gnu.org/bugs/?45810>

                 Summary: zp2sos error when calling cplxpair
                 Project: GNU Octave
            Submitted by: charprap
            Submitted on: Sun 23 Aug 2015 10:41:05 AM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0
        Operating System: Microsoft Windows

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Details:

Hi,
The following code produces an error in the function zp2sos. Note that it is
working with Matlab and also if the filter type is ellip.

Thank you



% NOT WORKING

pkg load signal
N=2;
Wp=[5976, 6605];
[Z,P,K] = butter(N,Wp,'stop','s')
[SOS,G] = zp2sos(Z,P,K)


% WORKING

[Z,P,K] = ellip(N,3,40,Wp,'stop','s')
[SOS,G] = zp2sos(Z,P,K)








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