How to separate a signal into 4 second segments?

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Explorer
Explorer le 26 Jan 2016
Commenté : Explorer le 27 Jan 2016
Lets say I have an ECG signal and I want to separate it 4 second segments. How to do it 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')

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Walter Roberson
Walter Roberson le 26 Jan 2016
If you have the signal processing toolbox, see buffer(), provided the signals are equally spaced in time.
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Star Strider
Star Strider le 27 Jan 2016
The Physionet EKGs are all sampled at constant time intervals, but the intervals are different in different records. The sampling frequencies and other data for each record are all available in the database.
Explorer
Explorer le 27 Jan 2016
Thank you guys!

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