RA: Relative Amplitude

In ActCR: Extract Circadian Rhythms Metrics from Actigraphy Data

Relative Amplitude

Description

This function calcualte relative amplitude, a nonparametric metric reprsenting fragmentation of circadian rhtymicity

Usage

RA(x, window = 1, method = c("average", "sum"))

Arguments

x	vector vector of activity data
window	since the caculation of M10 and L5 depends on the dimension of data, we need to include window size as an argument.
method	character of "sum" or "average", function used to bin the data

Value

A list with elements

M10	Maximum 10 hour activity
L5	Minimum 5 hour activity
RA	Relative amplitude

References

Junrui Di et al. Joint and individual representation of domains of physical activity, sleep, and circadian rhythmicity. Statistics in Biosciences.

Examples

data(example_activity_data)
count1 = c(t(example_activity_data$count[1,-c(1,2)]))
ra = RA(x = count1, window = 10, method = "average")

ActCR documentation built on May 11, 2022, 5:13 p.m.