MATLAB: How to plot vertical dotted line ?

MATLABqrs detection

i want plot vertical dotted line on the same figure(scale 25), at samples: 180 and 220 the length of my ecg is 2000??
    load ecg.m;
    subplot(221);
    plot(ecg); title ('ECG');
    xlabel('samples'); ylabel('magnitude');
 fs=360;
subplot(222)
CWTcoeffs = cwt(ecg,20:55,'sym4','plot');
colormap jet; colorbar;
subplot(223);
qrs_thr_end=220;
qrs_thr_on=180;
plot(CWTcoeffs(25,:)); title('Scale 25');

Best Answer

x=your_value*ones(1,length_of_y);
plot(x,y)
Related Question