Poincare plot for hrv

2011 12 29
1 个回答
回答已采纳
9 次查看（30 天）

0 个投票

Hello, I'm writing an application to analize HRV and I have a problem with the Poincare plot. I've done the SD1 and SD2 parameters but I don't know how to vizualize the plot. Can anybody help me in this matter? I'll be very grateful ;)
that is what I've done:
%Poincare plot
xp=odstepRR;
xp(end)=[];
xm=odstepRR;
xm(1)=[];
%SD1
SD1 = std(xp-xm)/sqrt(2);
set(handles.sd1, 'string', num2str(SD1*1000));
%SD2
SD2 = std(xp+xm)/sqrt(2);
set(handles.sd2, 'string', num2str(SD2*1000));
%SDRR
SDRR=sqrt(SD1^2+SD2^2)/sqrt(2);
set(handles.sdrr, 'string', num2str(SDRR*1000));

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

David
David 2012-6-13
can you plz explain how you arrived at the sd1 and sd2 equations?

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

bym
bym 2011-12-29

0 个投票

I don't know what the variable odstepRR is, but a reasonable assumption would lead to this as the Poincare plot
plot(xm,xp,'.')

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Scatter Plots 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by