Process Accelerometer Data for Physical Activity Measurement
Define Metadata Vector
Retrieve ActiGraph Settings
Collapse Accelerometer Data to a Dataset with a Longer Epoch
Delivery Features
Wrapper Function for Accelerometry data Preprocessing, Feature Extract...
Predict Delivery Days in Accelerometry Data
Preprocess Accelerometry Data
Delivery Count Threshold
Classify Mail Delivery and Non-Delivery Days for Accelerometer Data
Marking Data with Wearing Tags
Mark Days
Mark Physical Activity Intensity (PAI) Level
Retrieve ActiGraph Column Names
Internal Function
Internal functions
Process Accelerometer Data for Physical Activity Measurement
Plot Accelerometer Data over Time
Query ActiGraph File
Read ActiGraph Accelerometer Data
Convert Accelerometer Output Data to a Correct Data Format
Summarize Classified Wear Time by Daily Basis
Summarize Wear and Nonwear Time Interval
Create Time From Seconds Since 0001-01-01
Define Days Within Window
Classify Wear and Nonwear Time for Accelerometer Data
It provides a function "wearingMarking" for classification of monitor wear and nonwear time intervals in accelerometer data collected to assess physical activity. The package also contains functions for making plot for accelerometer data and obtaining the summary of various information including daily monitor wear time and the mean monitor wear time during valid days. "deliveryPred" and "markDelivery" can classify days for ActiGraph delivery by mail; "deliveryPreprocess" can process accelerometry data for analysis by zeropadding incomplete days and removing low activity days; "markPAI" can categorize physical activity intensity level based on user-defined cut-points of accelerometer counts. It also supports importing ActiGraph AGD files with "readActigraph" and "queryActigraph" functions.