Package: nparACT Title: Non-Parametric Measures of Actigraphy Data Version: 0.9.1 Authors@R: person(given = "Christine", family = "Blume", role = c("aut", "cre"), email = "christine.blume@unibas.ch", comment = c(ORCID = "0000-0003-2328-9612")) Description: Computes interdaily stability (IS), intradaily variability (IV) & the relative amplitude (RA) from actigraphy data as described in Blume et al. (2016) and van Someren et al. (1999) . Additionally, it also computes L5 (i.e. the 5 hours with lowest average actigraphy amplitude) and M10 (the 10 hours with highest average amplitude) as well as the respective start times. The flex versions will also compute the L-value for a user-defined number of minutes. IS describes the strength of coupling of a rhythm to supposedly stable zeitgebers. It varies between 0 (Gaussian Noise) and 1 for perfect IS. IV describes the fragmentation of a rhythm, i.e. the frequency and extent of transitions between rest and activity. It is near 0 for a perfect sine wave, about 2 for Gaussian noise and may be even higher when a definite ultradian period of about 2 hrs is present. RA is the relative amplitude of a rhythm. Note that to obtain reliable results, actigraphy data should cover a reasonable number of days. License: GPL-3 Imports: ggplot2, grid, stringr, zoo, tools Language: en-GB LazyData: true Roxygen: list(markdown = TRUE) RoxygenNote: 7.3.2 Encoding: UTF-8 Depends: R (>= 3.5) Suggests: knitr, rmarkdown, roxygen2 VignetteBuilder: knitr Config/pak/sysreqs: libicu-dev Repository: https://christineblume.r-universe.dev Date/Publication: 2025-12-16 09:39:10 UTC RemoteUrl: https://github.com/christineblume/nparact RemoteRef: HEAD RemoteSha: 1ceacb3a38829d85d104d4503908522092e4091d NeedsCompilation: no Packaged: 2026-07-14 06:26:03 UTC; root Author: Christine Blume [aut, cre] (ORCID: ) Maintainer: Christine Blume