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CircaCP  

Sleep and Circadian Metrics Estimation from Actigraphy Data
View on CRAN: Click here


Download and install CircaCP package within the R console
Install from CRAN:
install.packages("CircaCP")

Install from Github:
library("remotes")
install_github("cran/CircaCP")

Install by package version:
library("remotes")
install_version("CircaCP", "0.1.2")



Attach the package and use:
library("CircaCP")
Maintained by
Shanshan Chen
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2025-11-12
Latest Update: 2025-11-12
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.
How to cite:
Shanshan Chen (2025). CircaCP: Sleep and Circadian Metrics Estimation from Actigraphy Data. R package version 0.1.2, https://cran.r-project.org/web/packages/CircaCP. Accessed 24 Oct. 2026.
Previous versions and publish date:
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Complete documentation for CircaCP
Functions, R codes and Examples using the CircaCP R package
Full CircaCP package functions and examples
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