Determining number heartbeats the data.

hi everyone, I am using the MIT-BIH Arrhythmia Database and was asked to get 10 consecutive minutes, and i did and then three colums, first for time, second for MLII and third for V5 and ended up with these

x = txt(1:86401,1);
y = txt(1:86401,2);
z = txt(1:86401,3);
hold on;
plot(x,y)
plot(x,z)

but i am asked to determine number of heart beats and duration of the time interval between successive heart beats, and this is without using a filter, how would i do that since data number is so large and heartbeats are very small?

thanx so much

Answer 1

[Oleg Komarov]

If you have signal processing use findpeaks, or download one of the many submissions from FEX.