How to plot two lines in a looped subplot in matlab?

Question

Armando MAROZZI 2020-5-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/538363-how-to-plot-two-lines-in-a-looped-subplot-in-matlab

评论： Star Strider 2020-5-30

I plotted 5 graphs with a loop in MATLAB. Now, I want to add a further line only to the third plot. However, when I try to do it, it adds the additional line to every subplot.

What I have is this:

lines = rand([30 5])
line2 = rand([30 1])
K =5
for j = 1:k
    subplot(3, 2, j);
    plot(lines(:,j), 'LineWidth',1,'Color', [0 0 0.5]);
    hold on
    plot(line2, 'LineWidth',1,'Color', [0 0 0.5], 'LineStyle','b--o')
    yline(0, '-')
    
end 

Can anyone help me out?

Thanks!

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Answer 1

Star Strider 2020-5-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/538363-how-to-plot-two-lines-in-a-looped-subplot-in-matlab#answer_443023

在 MATLAB Online 中打开

Add an if block in the loop:

lines = rand([30 5]);
line2 = rand([30 1]);
k = 5;
for j = 1:k
    subplot(3, 2, j);
    plot(lines(:,j), 'LineWidth',1,'Color', [0 0 0.5]);
    hold on
    if j == 3
        plot(line2, 'LineWidth',1,'Color', [0 0 0.5], 'LineStyle','-.')
    end
    yline(0, '-')
    
end