Correct Ectopic Beats in RR Interval Data

Replaces or removes ectopic beats identified by ecgQualityCheck. The "interpolate" method uses linear interpolation from surrounding non-ectopic intervals, "cubic_spline" uses natural cubic-spline interpolation (C1-smooth, following Kubios-style automatic correction), and "remove" simply drops ectopic rows.

Usage

ecgRRcorrect(rr, method = c("interpolate", "cubic_spline", "remove"))

Arguments

rr

A data.frame with an is_ectopic logical column, as returned by ecgQualityCheck.

method

Correction method: "interpolate" (default) replaces ectopic values with linear interpolation; "cubic_spline" uses natural cubic-spline interpolation (falls back to linear when fewer than four valid beats are available in a channel); "remove" drops ectopic rows.

Value

A data.frame with corrected RR intervals. The is_ectopic column is removed from the output. The result carries the ectopic burden as attributes n_ectopic (count) and pct_ectopic (percent of beats flagged ectopic).

References

Clifford, G.D., Azuaje, F. & McSharry, P.E. (2006). Advanced Methods and Tools for ECG Data Analysis. Artech House.

See also

ecgQualityCheck for detecting ectopic beats, ecgRRintervals for computing RR intervals, ecgHRVtime for time-domain HRV analysis.