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) <doi: 10.1016/j.mex.2016.05.006> and van Someren et al. (1999) <doi: 10.3109/07420529908998724>. 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
RoxygenNote: 7.3.2
Encoding: UTF-8
Depends: R (>= 3.5)
Suggests: knitr, rmarkdown, roxygen2
VignetteBuilder: knitr
NeedsCompilation: no
Packaged: 2025-12-16 09:35:53 UTC; chris
Author: Christine Blume [aut, cre] (ORCID:
    <https://orcid.org/0000-0003-2328-9612>)
Maintainer: Christine Blume <christine.blume@unibas.ch>
Repository: CRAN
Date/Publication: 2025-12-16 09:50:02 UTC
Built: R 4.6.0; ; 2026-04-26 09:09:27 UTC; unix
