how to have the same settings on right Y axis from the left Y axis

Question

endystrike 2020-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/546086-how-to-have-the-same-settings-on-right-y-axis-from-the-left-y-axis

评论： Ameer Hamza 2020-6-12

Hello everyone,

I struggling in having Y axis both on left and right side of a graph, but with the same settings, the same color and the same Y ticks...

I tried moving the following command "yyaxis right;" before assigning "ytickformat" and so on, but it creates a new axis from scratch and I don't know how to get the settings from the left Y axis and set them into the Y right axis.

Is there the possibility to get all the settings from Y left axis, save them into a variable and then set the Y right axis from the variable that stores everything?

Thanks

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Answer 1

Ameer Hamza 2020-6-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/546086-how-to-have-the-same-settings-on-right-y-axis-from-the-left-y-axis#answer_449639

在 MATLAB Online 中打开

Following solution is adopted from this answer: https://www.mathworks.com/matlabcentral/answers/312653-matlab-object-assignment-copy-an-object-instead-of-creating-a-pointer#answer_243641

ax = axes();
yyaxis right
copyAxis(ax.YAxis(1), ax.YAxis(2))
function copyAxis(a, b)
    p =  properties(a).';
    for i=1:numel(p)  %copy all public properties
        try   %may fail if property is read-only
            b.(p{i}) = a.(p{i});
        catch
            warning('failed to copy property: %s', p{i});
        end
    end
end

You can save the copyAxis function in a seperate file.

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endystrike 2020-6-11

在 MATLAB Online 中打开

Thank you very much Ameer! :)

I've finally fixed modifying a little bit the function you've provided me... :)

function cloneYAxisFromLeftToRight()
    fmt = ytickformat(gca);
    ax0 = get(gca);
    yyaxis right;
    ax1 = gca;
    p =  properties(ax0.YAxis).';
    for i=1:numel(p)  %copy all public properties
        try   %#ok<TRYNC> %may fail if property is read-only
            ax1.YAxis(2).(p{i}) = ax0.YAxis.(p{i});
        end
    end
    %extras
    ax1.YColor = ax0.YColor;
    ax1.YColorMode = ax0.YColorMode;
    ax1.YDir = ax0.YDir;
    ax1.YLimMode = ax0.YLimMode;
    ax1.YScale = ax0.YScale;
    ax1.YTickLabelMode = ax0.YTickLabelMode;
    ax1.YTickLabelRotation = ax0.YTickLabelRotation;
    ax1.YTickMode = ax0.YTickMode;
    
    %core
    ax1.YTickLabel = ax0.YTickLabel;
    ax1.YLim = ax0.YLim;
    ax1.YTick = ax0.YTick;
    
    %restore original format on the right Y-axis
    ytickformat(fmt);
end