readActigraph: Read ActiGraph Accelerometer Data

In PhysicalActivity: Process Accelerometer Data for Physical Activity Measurement

Description

This function reads an ActiGraph AGD file into R as a data frame. If accelerometer data are collected with three axes, it creates vector magnitude (vm). The counts at any axis or "vm" can be used to classify with wear and nonwear time using wearingMarking.

Usage

readActigraph(datfile, convertTime = TRUE)

Arguments

datfile	An AGD file.
convertTime	Convert the timestamp from a character string into POSIXct.

Details

AGD files are SQLite databases. This function requires the RSQLite package.

Value

A data frame with accelerometer data.

Author(s)

Cole Beck [e-mail]

See Also

wearingMarking, queryActigraph

Examples

## Not run: 
dat <- readActigraph("actfile.agd")
dat1s <- wearingMarking(dataset = dat,
                       frame = 90,
                       perMinuteCts = 1,
                       TS = "TimeStamp",
                       cts = "axis1",
                       streamFrame = NULL,
                       allowanceFrame= 2,
                       newcolname = "wearing",
                       getMinuteMarking = FALSE)

## End(Not run)

PhysicalActivity documentation built on Jan. 23, 2021, 1:06 a.m.