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Detects whether accelerometer is worn

g.weardec.Rd

Uses the object produced by g.part1 to assess whether the accelerometer was worn

Usage

g.weardec(M, wearthreshold, ws2, nonWearEdgeCorrection = TRUE)

Arguments

M

Object produced by g.getmeta

wearthreshold

Number of axis that at least need to meet the non-wear criteria

ws2

Large windowsize used in seconds to apply non-wear detection Small window size not needed, because this is inherent to the object M

nonWearEdgeCorrection

Boolean to indicated whether the EdgeCorrection as described in 2013 should be applied (default = TRUE, which is consistent with how code has been)

Value

  • r1 Participant id extracted from file

  • r2 Night number

  • r3 Detected onset of sleep expressed as hours since the previous midnight

  • LC fraction of 15 minute windows with more than 5 percent clipping

  • LC2 fraction of 15 minute windows with more than 80 percent clipping

Author

Vincent T van Hees <v.vanhees@accelting.com>

Examples

  data(data.getmeta)
  output = g.weardec(M = data.getmeta, wearthreshold = 2, ws2 = 900)