[Octave-bug-tracker] [bug #60187] Invalid warning from text.m about character matrices

[Philip Nienhuis]

URL:
  <https://savannah.gnu.org/bugs/?60187>

                 Summary: Invalid warning from text.m about character matrices
                 Project: GNU Octave
            Submitted by: philipnienhuis
            Submitted on: Sat 06 Mar 2021 11:18:44 PM CET
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: Philip Nienhuis
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: Microsoft Windows

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Details:

(some more spin-off from patch #9985)


>> help text
'text' is a variable

-- text (X, Y, STRING)
-- text (X, Y, Z, STRING)
-- text (..., PROP, VAL, ...)
-- text (HAX, ...)
-- H = text (...)
     Create a text object with text STRING at position X, Y, (Z) on the
current axes.

     Multiple locations can be specified if X, Y, (Z) are vectors. Multiple
strings can be specified with a character matrix or a cell array of strings.


Now do the following:

>> plot (sin ([0:10]))

>> tt = repmat ('abc', 3, 1)
tt =
abc
abc
abc

>> text (5, 0.5, tt)
warning: multi-row character matrix converted to a string, only the first row
is used
warning: called from
    __plt_get_axis_arg__ at line 52 column 12
    text at line 93 column 27


and then the above warning:
* is at variance with text's own help text which explicitly mentions
'character matrix'
* 'only the first row is used' is at variance with the attached pic where all
three rows of character matrix 'tt' show up.

Provisionally OS set to 'Windows' but I expect to see it on other platforms as
well.



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File Attachments:


-------------------------------------------------------
Date: Sat 06 Mar 2021 11:18:44 PM CET  Name: text.m_bug.png  Size: 27KiB   By:
philipnienhuis

<http://savannah.gnu.org/bugs/download.php?file_id=51015>

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