activAnalyzer (version 2.1.2)

read_agd_raw: Read an *.agd file, with no post-processing

Description

Read ActiGraph sleep watch data from an SQLite database stored in an AGD file and return a list with (at least) five tables: data, sleep, filters, settings, awakenings. The tables have the schema described in the ActiLife 6 User manual and the timestamps are converted from Unix time format to human-readable POSIXct representation. Code is from actigraph.sleepr package https://github.com/dipetkov/actigraph.sleepr/. See LICENCE.note file in the app skeleton.

Usage

read_agd_raw(file, tz = "UTC")

Value

A list of five tables: settings, data, filters, sleep, awakenings and, if available, capsense.

Arguments

file

Full path to an agd file to read.

tz

Time zone to convert DateTime ticks to POSIX time.

Details

Some ActiGraph devices contain a capacitive sensor to detect monitor removal when worn against the skin. If that data is available, the return list includes a capsense table as well.

References

ActiLife 6 User's Manual by the ActiGraph Software Department. 04/03/2012.

covertagd: R package for converting agd files from ActiGraph into data.frames.

See Also

read_agd()

Examples

file <- system.file("extdata", "acc.agd",
  package = "activAnalyzer"
)
str(read_agd_raw(file))