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GGIRread

Functions for reading accelerometer data from the following file formats:

Brand	Device name	File extension	Data type	GGIRread function
Axivity Ltd https://axivity.com/	AX3 and AX6	.cwa	raw gravitational units	readAxivity
ActivInsights Ltd https://activinsights.com/	GENEActiv Original and Sleep	.bin	raw gravitational units	readGENEActiv
Unilever Discover Ltd	Genea (no longer manufactured)	.bin	raw gravitational units	readGenea
Parmay Tech https://www.matrixwearable.net/	Matrix	.bin, .BIN	raw gravitational units	readParmayMatrix
ActiGraph	???	.csv	count data	readActigraphCount
Actiwatch	???	.csv and .awd	count data	readActiwatchCount
Actical	???	.csv	count data	readActicalCount
Philips Health Band	???	.xlsx	count data	readPHBCount
Fitbit	???	.json	sleep, steps or calories data	readFitbit

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Version

Install

install.packages('GGIRread')

Monthly Downloads

101,392

Version

1.0.7

License

Apache License (== 2.0)

Issues

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Repository

https://github.com/wadpac/GGIRread/

Maintainer

Vincent T van Hees

Last Published

November 26th, 2025

Functions in GGIRread (1.0.7)

Resample timeseries

readActiwatchCount

Read Actiwatch Count data files (csv)

Function to read .cwa-format files as produced by the accelerometer named 'Axivity'

Read PHB Count data files (xlsx)

Function to read binary files as produced by the accelerometer named 'Genea', not to be confused with the 'GENEActiv' (see package GENEAread for this)

Find start of data inside text file.

GGIRread-package

A package to read data files from wearable accelerometers

readActiGraphCount

Read ActiGraph Count data files (csv)

GENEActivReader

Function (C++) to read binary files as produced by the GENEActiv accelerometer

readActicalCount

Read Actical Count data files (csv)

mergeFitbitData

Merge Fitbit json files into one data.frame

Merge Philips Health Band xlsx file pairs into one csv file

Read Fitbit data files (json)

Function (R) to read binary files as produced by the GENEActiv accelerometer

readParmayMatrix

Read and Process Binary Data from Matrix Devices

checkTimeFormat

Check timestamp format

Get File Extension

Deprecated function to read .wav files as can be stored with OMGUI software by Axivity Ltd