How can I plot annotation file from MIT-BIH Arathmia Data Base using Matlab ?

I am trying to plot the record 118 with annotations using matlab .. I am not sure how to use the WFDB toolbox? could any one explain by steps how to get the files and plot it in matlab ?

Answer 1

[Martin Paralic]

firstSample = 1;

lastSample = 3000;

% add the data path in to working space of matlab

% fulpath is not well supported

ecgFile = '100';

% physionet WFDB toolbox for Matlab - functions rdsamp(), rdann()

% read samples, firstSample and lastSample are optional parameters

[signal, fs, tm] = rdsamp(ecgFile,firstSample, lastSample);

% read annotations

[ann, anntype, subtype, chan, num, comments] = rdann(ecgFile,'atr', firstSample, lastSample);

% plots all channels

plot(signal)

hold on

% plots markers on annotation positions 'ann' as # of sample

% markers are adjusted to channel 1

plot(ann,signal(ann,1),'o');

% plots marker labels

text(ann,signal(ann,1), anntype);

hold off

[Enes OGUZ]

thank you very much it was very useful

[Theodora Chivu]

How to plot in time domain without plotting 2 signals?