[Octave-bug-tracker] [bug #60475] [ocatave forge] (signal) buttap poles have a different order

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?60475>

                 Summary: [ocatave forge] (signal) buttap poles have a
different order
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 29 Apr 2021 12:00:45 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 4.2.2
         Discussion Lock: Any
        Operating System: Any

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Details:

https://ewh.ieee.org/r1/ct/sps/PDF/MATLAB/chapter5.pdf


[z, p, k] = buttap(5)
z =
[]
p =
-0.3090 + 0.9511i
-0.3090 - 0.9511i
-0.8090 + 0.5878i
-0.8090 - 0.5878i
-1.0000
k =
1


In Octave


[z, p, k] = buttap(5)
z = [](0x1)
p =

  -0.30902 + 0.95106i
  -0.80902 + 0.58779i
  -1.00000 + 0.00000i
  -0.80902 - 0.58779i
  -0.30902 - 0.95106i

k =  1


The values are the same for p but the order is different.




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