how to seperate a signal into 4 second segment using MATLAB? -


i have ecg signal , want separate 4 second segments. how in matlab?

% matlab code  load ('c:\users\explorer\documents\matlab\physionet_database\malignant_ventricular_ectopy_database\418m.mat');  signal=val(1,:);  plot(signal); xlabel('time'); ylabel('voltage');

418m.mat

the signal downloaded website of physionet , of mit bih malignant_ventricular_ectopy_database.

there 2 signal in 418m.mat. want separate first 1 signal.

also, there function buffer() in matlab equally spaced in time. don't know whether signal equally spaced in time or not.


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