Package: ActCR
Type: Package
Title: Extract Circadian Rhythms Metrics from Actigraphy Data
Version: 0.4.0
Authors@R: c(
    person(given = "Junrui", family = "Di", 
        role = c("aut", "cre"), email = "dijunrui@gmail.com"),
    person(given = "Vadim", family = "zipunnikov", 
        role = c("aut"), email = "vadim.zipunnikov@gmail.com"),
    person(given = "Vincent", family = "van Hees", 
        role = c("ctb"), email = "v.vanhees@accelting.com")
      )
Maintainer: Junrui Di <dijunrui@gmail.com>
Description: Circadian rhythms are rhythms that oscillate about every 24 h, which has been observed in multiple physiological processes including core body temperature, hormone secretion, heart rate, blood pressure, and many others. Measuring circadian rhythm with wearables is based on a principle that there is increased movement during wake periods and reduced movement during sleep periods, and has been shown to be reliable and valid. This package can be used to extract nonparametric circadian metrics like intradaily variability (IV), interdaily stability (IS), and relative amplitude (RA); and parametric cosinor model and extended cosinor model coefficient. Details can be found in Junrui Di et al (2019) <doi:10.1007/s12561-019-09236-4>.
License: GPL-3
Imports: zoo, cosinor, cosinor2, dplyr, minpack.lm
Depends: R (>= 4.4.0),
Encoding: UTF-8
LazyData: true
URL: https://github.com/junruidi/ActCR
BugReports: https://github.com/junruidi/ActCR/issues
RoxygenNote: 7.3.3
NeedsCompilation: no
Packaged: 2026-01-11 19:41:15 UTC; junruidi
Author: Junrui Di [aut, cre],
  Vadim zipunnikov [aut],
  Vincent van Hees [ctb]
Repository: CRAN
Date/Publication: 2026-01-12 06:11:19 UTC
Built: R 4.6.0; ; 2026-04-25 13:55:16 UTC; unix
