[Octave-bug-tracker] [bug #47904] text() with the wrong sized vector or cell array gives unexpected/weird results

[Mike Miller]

Update of bug #47904 (project octave):

              Item Group:                   Other => Matlab Compatibility   
                  Status:                    None => Need Info              
        Operating System:       Microsoft Windows => Any                    

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Follow-up Comment #1:

Confirming the combinatorial problem when the number of (x,y) points does not
match the number of text strings.

On my laptop with Debian:


ttext = 500x2 char label data. Time: 1.616
ttext = 500x1 cell label data. Time: 1.611
ttext = 499x2 char label data. Time: 1.557
ttext = 499x1 cell label data. Time: 4.550


I think we can consider it a known issue that plotting performance on Windows
is not ideal, I'd call that a separate issue than the one of mismatching text
arguments.

I don't know if this is avoidable, the Matlab help is (as usual) ambiguous.
They definitely show that a single point with a cell array of strings is
interpreted as multiple lines of text. And a cell array with multiple points
is interpreted as a different label for each point. But they do not give the
example of say, 3 (x,y) coordinates and a cell array of length 2. I'd like to
think that would be an error.

Anyone with Matlab care to test?

https://www.mathworks.com/help/matlab/ref/text.html

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