[Octave-bug-tracker] [bug #58648] Wrong error message using tfdata with non lti model arguments [control package 3.2.0 ]

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?58648>

                 Summary: Wrong error message using tfdata with non lti model
arguments  [control package 3.2.0 ]
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 23 Jun 2020 02:43:38 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Missed Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: Luiz
        Originator Email: luizmaccari@gmail.com
             Open/Closed: Open
                 Release: 5.2.0
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

When I put a non lti model as input argument I receive an wrong error
message.

Example:

TF=1;
tfdata(TF)

Output:

---------------

warning: the 'tfdata' function belongs to the control package from Octave
Forge but has not yet been implemented.

Please read <https://www.octave.org/missing.html> to learn how you can
contribute missing functionality.
error: 'tfdata' undefined near line 1 column 1
--------------------------------------------------------

However the function is already implemented and works well with lti models as
it input.

My suggestion is change the message in order to the users avoid input classes
other than lti models.




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