Activity Index Calculation using Raw 'Accelerometry' Data R package ActivityIndex version 0.3.7 Reads raw 'accelerometry' from 'GT3X+' data and plain table data to calculate Activity Index from 'Bai et al.' (2016) <doi:10.1371/journal.pone.0160644>. The Activity Index refers to the square root of the second-level average variance of the three 'accelerometry' axes. Software Depends: R (>= 2.10) Imports: matrixStats, data.table, utils, R.utils Suggests: knitr, testthat, graphics, rmarkdown Jiawei Bai <jbai@jhsph.edu> Comprehensive R Archive Network (CRAN) Jiawei Bai [cre, aut] (ORCID: <https://orcid.org/0000-0003-4021-0101>), John Muschelli [ctb] (ORCID: <https://orcid.org/0000-0001-6469-1750>) GPL-3 2021-01-11 application/tgz https://CRAN.R-project.org/package=ActivityIndex doi:10.32614/CRAN.package.ActivityIndex