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poincare plot of heart sound

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Saifuddin Chowdhury
评论： Dishant Arora 2014-2-11
I have following data: Sample frequency=11025; numbers of bits=16; y(file size)=<47326x1 double>.
I need to make RRI[i](sec) vs RRI[i+1](sec) poincare plot, where RRI is R-R interval. How do it?

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回答（2 个）

Dishant Arora
Dishant Arora 2014-2-10
X = RRI;
X(end)=[];
Y=RRI;
Y(1)=[];
plot(Y,X,'.');
Saifuddin Chowdhury
编辑：Saifuddin Chowdhury 2014-2-11
how to calculate RR interval in second for given data?
I want to do it by autocorreltion.
x=xcorr(y);

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