These functions look for errors in the data. A code is returned.
errorChk(x, fault = 32767)a vector of the same length as x.
vector of accelerometer data.
numerical value that indicates voltage signal saturation (temporarily used for both accelerometer counts and steps).
Marco Geraci
Error coded are as follow: 0, no error; 1, all values are 5-digit values or all one value; 2, negative values; 3, NAs.
Geraci M, Rich C, Sera F, Cortina-Borja M, Griffiths LJ, and Dezateux C (2012). Technical report on accelerometry data processing in the Millennium Cohort Study. London, UK: University College London. Available at https://discovery.ucl.ac.uk/1361699
gt1mAccFile, gt3xAccFile