how to plot vertical dotted line ??

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Good mind
Good mind 2017-10-16
评论： Good mind 2017-10-17
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');

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采纳的回答

Ahmed raafat
Ahmed raafat 2017-10-16
x=your_value*ones(1,length_of_y);
plot(x,y)

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