[Octave-bug-tracker] [bug #66376] tf2sos throws error when running example from help page

[pedro_uno]

URL:
  <https://savannah.gnu.org/bugs/?66376>

                 Summary: tf2sos throws error when running example from help
page
                   Group: GNU Octave
               Submitter: pedro
               Submitted: Thu 24 Oct 2024 08:09:21 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Segfault, Bus Error, etc.
                  Status: None
             Assigned to: None
         Originator Name: peter dudley
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 9.2.0
        Operating System: GNU/Linux
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


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Date: Thu 24 Oct 2024 08:09:21 PM UTC By: pedro_uno <pedro>
I use tf2sos frequently in digital filter design work. Recently one of my
scripts started to fail so I tried the example in the tf2sos help page and it
crashes also. See below.

This is an important function. Please help.

>>
          B = [1 0 0 0 0 1];
          A = [1 0 0 0 0 .9];
          [sos, g] = tf2sos (B, A)
error: '__lti_input_idx__' undefined near line 197, column 33
error: called from
    tf at line 197 column 31
    tf2zp at line 35 column 13
    tf2sos at line 67 column 11
>> version
ans = 9.2.0
>>







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