g.IVIS {GGIR}R Documentation

Calculates IV and IS

Description

To extract interdaily stability and interdaily variability as originally proposed by van Someren.

Usage

  g.IVIS(Xi, epochSize = 60, threshold = NULL)

Arguments

Xi

Vector with acceleration values, e.g. ENMO metric.

epochSize

Epoch size of the values in Xi expressed in seconds.

threshold

Acceleration threshold to distinguish inactive from active

Value

InterdailyStability
IntradailyVariability

Author(s)

Ian Meneghel Danilevicz <ian.meneghel-danilevicz@inserm.fr> Vincent T van Hees <v.vanhees@accelting.com>

References

Examples

  Xi = abs(rnorm(n = 10000,mean = 0.2))
  IVISvariables = g.IVIS(Xi=Xi)

[Package GGIR version 3.2-6 Index]