ActCosinor2 {mMARCH.AC} | R Documentation |
Cosinor Model for Circadian Rhythmicity
Description
A parametric approach to study circadian rhythmicity assuming cosinor shape.
Usage
ActCosinor2(x, window = 1, n1440 = 1440)
Arguments
x |
|
window |
The calculation needs the window size of the data. E.g window = 1 means each epoch is in one-minute window. |
n1440 |
the number of points of a day. Default is 1440 for the minute-level data. |
Value
A list with elements
mes |
MESOR which is short for midline statistics of rhythm, which is a rhythm adjusted mean. This represents mean activity level. |
amp |
amplitude, a measure of half the extend of predictable variation within a cycle. This represents the highest activity one can achieve. |
acro |
acrophase, a meaure of the time of the overall high values recurring in each cycle. Here it has a unit of radian. This represents time to reach the peak. |
acrotime |
acrophase in the unit of the time (hours) |
ndays |
Number of days modeled |
References
Cornelissen, G. Cosinor-based rhythmometry. Theor Biol Med Model 11, 16 (2014). https://doi.org/10.1186/1742-4682-11-16