Apply Sojourn Methods for Processing ActiGraph Accelerometer Data
Triaxial Sojourn method for the [SIP method](https://pubmed.ncbi.nlm.n...
Alternate lag-1 autocorrelation function
Compute lag-one autocorrelation
Zero crossings for ActiGraph data
Calculate proportion of zeroes in a data stream
Apply the youth Sojourn method
Combine short Sojourns
Summarize outcomes from data processed using the Sojourn method
Combine ActiGraph and activPAL data
Find transitions
Label Sojourns in a data stream according to the youth-specific algori...
Interactively input demographic information
Function for tidy assembly of text for printing in the console
Prepare ActiGraph data for entry into the Sojourn neural network
Shape data for input into the neural networks
Read an activPAL events file
Perform mean imputation
Check the formatting of a data frame for use in the SIP pipeline
Invoke the original uni-axial Sojourn method
Invoke the original triaxial Sojourn method
Sojourn: Apply Sojourn Methods for Processing ActiGraph Accelerometer ...
Check monitor data for required demographic variables
Format data for input into the youth Sojourn method's neural networks
Decision tree for making final predictions in the youth Sojourn method
Provides a simple way for utilizing Sojourn methods for accelerometer processing, as detailed in Lyden K, Keadle S, Staudenmayer J, & Freedson P (2014) <doi:10.1249/MSS.0b013e3182a42a2d>, Ellingson LD, Schwabacher IJ, Kim Y, Welk GJ, & Cook DB (2016) <doi:10.1249/MSS.0000000000000915>, and Hibbing PR, Ellingson LD, Dixon PM, & Welk GJ (2018) <doi:10.1249/MSS.0000000000001486>.