[bug #68013] plotting gives error: '__plt__' undefined near line 229, column 12

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URL:
  <https://savannah.gnu.org/bugs/?68013>

                 Summary: plotting gives  error: '__plt__' undefined near line
229, column 12
                   Group: GNU Octave
               Submitter: txn00b
               Submitted: Wed 04 Feb 2026 11:07:02 PM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: Rajith
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Unlocked
                 Release: 10.3.0
        Operating System: Microsoft Windows
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Wed 04 Feb 2026 11:07:02 PM UTC By: Txn00b <txn00b>
Hello,
I installed octave 10.3.0 and tested the plot function


a=1:1:10;
h = plot(a,a);


error: '__plt__' undefined near line 229, column 12
error: called from
    plot at line 229 column 5

Plot window opens, I can label the axis, and apply titles, apply grid. But no
plot is seen.


get(h);


gives the following error
error: 'h' undefined near line 1, column 8

Tested this with octave 10.1.0 with the exact same results

OS: Windows 11 Pro
Processor: AMD Ryzen AI 9 HX Pro 370 w/Radeon 890 M
RAM: 64 GB

Octave: 
GNU Octave, version 10.3.0
Copyright (C) 1993-2025 The Octave Project Developers.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.

Octave was configured for "x86_64-w64-mingw32".

Questions:
1. please advise what tests to run so as to narrow down the source of the
error
2. Where should the __plt__ function reside on a windows machine?

Thank you,
Rajith







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