ylim return type change

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Ian Nichols 2019-9-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/480067-ylim-return-type-change

编辑： Adam Danz 2020-2-7

Yesterday, Matlab started returning querries to ylim as type cell, containing a 2 element double vector, rather than the 2 element double vector itself. Any ideas why?

For example:

figure; plot( 1 : 5)
ylim

should return:

ans =
     1     5

But, now it returns:

ans =
  1×1 cell array
    {1×2 double}

This happened during a session!

I have to use cell2mat, now:

>> cell2mat( ylim)
ans =
     1     5

I'm using R2018a.

I haven't overloaded ylim:

>> which ylim
C:\Program Files\MATLAB\R2018a\toolbox\matlab\graph3d\ylim.m

and ylim.m is:

[SL: Removed the text of the ylim function included in MATLAB. It does appear to be the version included in release R2018a.]

What has happened?

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Ian Nichols 2019-9-12

在 MATLAB Online 中打开

Nicolas,

Just a single axis as far as I can see...

f = figure;
plot(1:5);
f.Children.YAxis
ans = 
  NumericRuler with properties:
             Limits: [1 5]
              Scale: 'linear'
           Exponent: 0
         TickValues: [1 1.5000 2 2.5000 3 3.5000 4 4.5000 5]
    TickLabelFormat: '%g'
  Show all properties
                 Children: [0×0 GraphicsPlaceholder]
                    Color: [0.1500 0.1500 0.1500]
                Direction: 'normal'
                 Exponent: 0
             ExponentMode: 'auto'
                FontAngle: 'normal'
                 FontName: 'Helvetica'
                 FontSize: 10
            FontSmoothing: 'on'
               FontWeight: 'normal'
         HandleVisibility: 'off'
                    Label: [1×1 Text]
                   Limits: [1 5]
               LimitsMode: 'auto'
                LineWidth: 0.5000
                MinorTick: 'off'
          MinorTickValues: [1×32 double]
      MinorTickValuesMode: 'auto'
                   Parent: [1×1 Axes]
                    Scale: 'linear'
            TickDirection: 'in'
        TickDirectionMode: 'auto'
          TickLabelFormat: '%g'
     TickLabelInterpreter: 'tex'
        TickLabelRotation: 0
    TickLabelRotationMode: 'auto'
               TickLabels: {9×1 cell}
           TickLabelsMode: 'auto'
               TickLength: [0.0100 0.0250]
               TickValues: [1 1.5000 2 2.5000 3 3.5000 4 4.5000 5]
           TickValuesMode: 'auto'
                  Visible: 'on'

Walter Roberson 2020-2-7

MATLAB is not itself restricting access to the installed files. MATLAB relies upon operating system access rights checking. At some point Windows 7 added controls to prevent non-privileged users from writing under Program Files, but Windows disables that protection for processes running as Administrator, because running as Administrator is intended to mean that you have rights to change nearly everything.