Problem with using 'DisplayName' property in fplot()

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Lennart Reich 2020-7-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/569484-problem-with-using-displayname-property-in-fplot

评论： Lennart Reich 2020-7-23

Hello everbody,

I wrote a function to plot a limit value in a existing figure. You can see it below. This function works well without using 'DisplayName' in fplot().

If I want to use 'DisplayName' I have got the following error:

Error using plot

Error in color/linetype argument.

Error in fplot (line 154)

plot(xx,y,marker,'parent',cax)

Error in limits (line 48)

fplot(f, axes.XLim, 'DisplayName', 'Test')

Can someone help me to fix this problem.

Thank you in advance,

Lennart

function limits(fig, standard)
    %% Code
    axes = fig.CurrentAxes;
    axes.NextPlot = 'add';
    if strcmp(standard, 'ECE R10 10m QuasiPeak') 
        f1 = @(x) 32;
        f2 = @(x) 32 + 15.13 .* log10(x/75000000);
        f3 = @(x) 43;
    elseif strcmp(standard, 'ECE R10 10m Average')
        f1 = @(x) 22;
        f2 = @(x) 22 + 15.13 .* log10(x/75000000);
        f3 = @(x) 33;
    elseif strcmp(standard, 'ECE R10 3m QuasiPeak')
        f1 = @(x) 42;
        f2 = @(x) 42 + 15.13 .* log10(x/75000000) ;
        f3 = @(x) 53;
    elseif strcmp(standard, 'ECE R10 3m Average')
        f1 = @(x) 32;
        f2 = @(x) 32 + 15.13 .* log10(x/75000000) ;
        f3 = @(x) 43;
    elseif strcmp(standard, 'ECE R10 EUB QuasiPeak')
        f1 = @(x) 62 - 25.13 .* log10(x/3000000);
        f2 = @(x) 52 + 15.13 .* log10(x/75000000) ;
        f3 = @(x) 63;
    elseif strcmp(standard, 'ECE R10 EUB Average')
        f1 = @(x) 52 - 25.13 .* log10(x/3000000);
        f2 = @(x) 42 + 15.13 .* log10(x/75000000) ;
        f3 = @(x) 53;
    else 
        error('Dies ist kein vorhandener Grenzwert!')
    end
    f = @(x) f1(x).*((30000000 <= x) & (x <= 75000000)) + f2(x).*((75000000 < x) & (x < 400000000)) + f3(x).*((400000000 <= x) & (x < 1000000000));
    fplot(f, axes.XLim, 'DisplayName', 'Test')
end

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Robert U 2020-7-23

Problem seems not to be "DisplayName" property but the limits given by axes.XLim.

Kind regards,

Robert

Lennart Reich 2020-7-23

But without axes.XLim I have got the same error.

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回答（1 个）

madhan ravi 2020-7-23

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/569484-problem-with-using-displayname-property-in-fplot#answer_469788

编辑：madhan ravi 2020-7-23

在 MATLAB Online 中打开

F = fplot(f);
set(F, 'DisplayName', 'Test')

8 个评论
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madhan ravi 2020-7-23

Thank you sir Walter!

Lennart Reich 2020-7-23

Yeah this works fine. Thank you Walter.

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