Forum: open-discussion

RE: FilterNIHR [ Reply ] By: Gio Naz on 2021-01-21 10:27	[forum:48663]
Dear Abraham, thanks for the kind reply. I found a way to compute the last disregarded RR interval too. Best regards Giovanni

RE: FilterNIHR [ Reply ]
By: Abraham Otero on 2021-01-20 17:54

[forum:48661]

I do not think it is the function FilterNIHR, but it is probably the effect of the BuildNIHR function. If the moments of occurrence of the beats are, for example, [0.8, 1.8, 2.6] the RR intervals are [?, 1.0, 0.8] because we do not know the RR distance of the first beat, the one that occurred in 0.8, with the previous one. The function doubles the first known value, and assumes that the RR intervals are [1.0, 1.0, 0.8]. This shouldn't have any relevant impact on the final analysis, but if you're not comfortable with that little distortion just remove the first (imputed) value:

hrv.data$Beat = hrv.data$Beat[-1,]

FilterNIHR [ Reply ] By: Gio Naz on 2021-01-20 17:16	[forum:48660]
Hi everyone! After having applied the FilterNIHR function I always get the same values in the first two elements of hrv.data$Beat$niHR and hrv.data$Beat$HR. The function seems to duplicate the first RR interval and not compute the last RR interval from the time beats I loaded in ascii format. Many thanks for the help! Best regards