AGread
Read Data Files from ActiGraph Monitors
Standardize the process of bringing various modes of output files into R. Additionally, processes are provided to read and minimally pre- process raw data from primary accelerometer and inertial measurement unit files, as well as binary .gt3x files. ActiGraph monitors are used to estimate physical activity outcomes via body-worn sensors that measure (e.g.) acceleration or rotational velocity.
AGread is for automatically detecting the format of .csv data files from ActiGraph accelerometers, and bringing the data into R. It is designed to streamline and standardize the file-reading process, prior to further processing. Thus, it can be used flexibly to develop new methods for handling ActiGraph data, or to invoke existing methods, many of which exist in other R packages (e.g. PhysicalActivity and TwoRegression), or will soon.
New in AGread 1.2.0, binary .gt3x files can be read in as well.
Installation
You can install the development version of AGread from github with:
# install.packages("devtools")devtools::install_github("paulhibbing/AGread")
Or, AGread v0.1.2 is now available on CRAN, and can be installed with:
install.packages("AGread")
News
AGread 0.2.0
Summary
In this update, the key new feature is support for reading binary
.gt3x files. Other bugs have been solved related to time variables,
and particularly calculations in epoch lengths other than 1-s. The
major changes are noted below.
Changes
- Added support for reading binary .gt3x files
- Added reintegration function
- Expanded support for files with inclinometer columns, to allow un-coded or dummy-coded data
- Added chunking as an option for reading RAW.csv files that are too large and cause memory issues
- Added option to apply autocalibration with GGIR
- Added option to return raw (uncollapsed) data (#3, @srlamunion)
- Updated time stamp calculations and time zone specifications where needed
- Set up automated testing for continued development
AGread 0.1.2
Summary
This is a resubmission of the original version
Changes
- Added a summary of what ActiGraph monitors measure in DESCRIPTION
- Unwrapped examples from \dontrun{} where feasible
- Improved the documentation of classify_magnetometer()
- Exported AG_meta()
AGread 0.1.1
Summary
This is a resubmission of the original version
Changes
- Added Vincent van Hees as contributor
- Added URL and BugReports fields to DESCRIPTION
AGread 0.1.0
Summary
- This is the initial version of
AGread.