Package: CircaCP
Type: Package
Title: Sleep and Circadian Metrics Estimation from Actigraphy Data
Version: 0.1.2
Authors@R: c(
    person("Shanshan", "Chen", email = "schen3@vcu.edu", role = c("aut", "cre")),
    person("Jonathon", "Jacobs", role = "ctb"))
Maintainer: Shanshan Chen <schen3@vcu.edu>
Description: A generic sleep–wake cycle detection algorithm for analyzing unlabeled actigraphy data. 
    The algorithm has been validated against event markers using data from the Multi-Ethnic Study of Atherosclerosis (MESA) Sleep study, 
    and its methodological details are described in Chen and Sun (2024) <doi:10.1098/rsos.231468>. 
    The package provides functions to estimate sleep metrics (e.g., sleep and wake onset times) and circadian rhythm metrics 
    (e.g., mesor, phasor, interdaily stability, intradaily variability), as well as tools for screening actigraphy quality, 
    fitting cosinor models, and performing parametric change point detection. 
    The workflow can also be used to segment long actigraphy sequences into regularized structures for physical activity research.
License: GPL (>= 3)
Encoding: UTF-8
LazyData: true
RoxygenNote: 7.3.3
Imports: data.table, pracma, stats, tibble
Suggests: ggplot2, knitr, minpack.lm, rmarkdown, testthat (>= 3.0.0)
Config/testthat/edition: 3
VignetteBuilder: knitr
Depends: R (>= 3.5)
NeedsCompilation: no
Packaged: 2025-11-08 20:12:09 UTC; schen3
Author: Shanshan Chen [aut, cre],
  Jonathon Jacobs [ctb]
Repository: CRAN
Date/Publication: 2025-11-12 11:10:02 UTC
Built: R 4.6.0; ; 2026-04-26 06:27:55 UTC; unix
