Compute RR Intervals from Detected R-Peaks

Calculates the time intervals between consecutive R-peaks for each channel. The resulting RR interval series is the standard input for all HRV analysis functions in this package.

Usage

ecgRRintervals(x, peaks)

Arguments

x

A PhysioExperiment object.

peaks

A data.frame of detected peaks as returned by ecgDetectRpeaks, with columns channel, sample, and time_sec.

Value

A data.frame with one row per consecutive beat pair and the following columns:

channel

Integer channel index (1-based).

rr_ms

RR interval in milliseconds (time between successive R-peaks).

time_sec

Time of the first beat in each pair (seconds from signal onset).

Returns a zero-row data.frame with the same column structure if fewer than two peaks are available.

References

Pan, J. & Tompkins, W.J. (1985). "A real-time QRS detection algorithm." IEEE Transactions on Biomedical Engineering, 32(3), 230–236. doi:10.1109/TBME.1985.325532

See also

ecgDetectRpeaks for R-peak detection, ecgHRVtime for time-domain HRV metrics, ecgHRVfreq for frequency-domain HRV analysis, ecgQualityCheck for ectopic beat detection.

Examples

if (FALSE) { # \dontrun{
pe <- make_ecg(n_time = 5000, sr = 500, heart_rate = 60)
peaks <- ecgDetectRpeaks(pe)
rr <- ecgRRintervals(pe, peaks)
head(rr)
} # }