This R script will generate all necessary R/Rmd/shell files for data processing after running GGIR for accelerometer data.
afterggir(
mode,
useIDs.FN = NULL,
currentdir,
studyname,
bindir = NULL,
outputdir,
epochIn = 5,
epochOut = 5,
flag.epochOut = 60,
log.multiplier = 9250,
use.cluster = TRUE,
QCdays.alpha = 7,
QChours.alpha = 16,
QCnights.feature.alpha = c(0, 0),
Rversion = "R",
filename2id = NULL,
PA.threshold = c(50, 100, 400),
desiredtz = "US/Eastern",
RemoveDaySleeper = FALSE,
part5FN = "WW_L50M100V400_T5A5",
NfileEachBundle = 20,
trace = FALSE
)number Specify which of the five parts need to be run, e.g. mode = 0 makes that all R/Rmd/sh files are generated for other parts. When mode = 1, all csv files in the GGIR output directory were read, transformed and then merged. When mode = 2, the GGIR output files were checked and summarized in one excel sheet. When mode = 3, the merged data was cleaned according to the number of valid hours on each night and the number of valid days for each subject. When mode = 4, the cleaned data was imputed.
character Filename with or without directory for sample information in CSV format, which including "filename" and "duplicate" in the headlines at least. If duplicate="remove", the accelerometer files will not be used in the data analysis of part 5-7. Defaut is NULL, which makes all accelerometer files will be used in part 5-7.
character Directory where the output needs to be stored. Note that this directory must exist.
character Specify the study name that used in the output file names
character Directory where the accelerometer files are stored or list
character Directory where the GGIR output was stored.
number Epoch size to which acceleration was averaged (seconds) in GGIR output. Defaut is 5 seconds.
number Epoch size to which acceleration was averaged (seconds) in part1. Defaut is 5 seconds.
number Epoch size to which acceleration was averaged (seconds) in part 3. Defaut is 60 seconds.
number The coefficient used in the log transformation of the ENMO data, i.e. log( log.multiplier * ENMO + 1), which have been used in part 5-7. Defaut is 9250.
logical Specify if part1 will be done by parallel computing. Default is TRUE, and the CSV file in GGIR output will be merged for every 20 files first, and then combined for all.
number Minimum required number of valid days in subject specific analysis as a quality control step in part2. Default is 7 days.
number Minimum required number of valid hours in day specific analysis as a quality control step in part2. Default is 16 hours.
number Minimum required number of valid nights in day specific mean and SD analysis as a quality control step in the JIVE analysis. Default is c(0,0), i.e. no additional data cleaning in this step.
character R version, eg. "R/3.6.3". Default is "R".
R function User defined function for converting filename to sample IDs. Default is NULL.
number Threshold for light, moderate and vigorous physical activity. Default is c(50,100,400).
charcter desired timezone: see also http://en.wikipedia.org/wiki/Zone.tab. Used in g.inspectfile(). Default is "US/Eastern". Used in g.inspectfile() function to inspect acceleromether file for brand, sample frequency in part 2.
logical Specify if the daysleeper nights are removed from the calculation of number of valid days for each subject. Default is FALSE.
character Specify which output is used in the GGIR part5 results. Defaut is "WW_L50M100V400_T5A5", which means that part5_daysummary_WW_L50M100V400_T5A5.csv and part5_personsummary_WW_L50M100V400_T5A5.csv are used in the analysis.
number Number of files in each bundle when the csv data were read and processed in a cluster. Default is 20.
logical Specify if the intermediate results is printed when the function was executed. Default is FALSE.
See postGGIR manual for details.