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

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!

Answer 1

[Star Strider]

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

.

[Armando MAROZZI]

amazing! thanks a lot!

[Star Strider]

As always, my pleasure!