second.by.second: Convert AP Events File to a Second-By-Second File
In activpalProcessing: Process activPAL Events Files

Description Usage Arguments Details Value Author(s) See Also Examples

This function converts the AP Events file to a second-by-second data frame. The AP Events file must be a data frame in the format produced by the function activpal.file.reader.

1	second.by.second(data)

data

Data is a data frame in the format produced by the function activpal.file.reader.

This function works on AP Events files read in by activpal.file.reader.

data frame with 9 variables in second-by-second epochs: 1) time = date and time stamps beginning at start of recording and ending at last recording 2) date = date stamp beginning at first day of recording and ending at last day of recording recording, 3) ap.posture = posture 0 = sitting, 1 = standing, 3 = stepping 4) mets = met value 5) met.hours = met value expressed as met.hour (e.g. mets/3600) 6) steps = cumulative step count 7) fifteen.sec.mets = 15 second epoch met value (e.g. average met value over 15 seconds) 8) one.min.mets = 60 second epoch met value (e.g. average met value over 60 seconds) 9) num.events = numeric value indicating which event this second of data corresponds to

John Staudenmayer, Kate Lyden

activpal.file.reader julian

## Not run: 	
data <- activpal.file.reader(file.name.and.path)

second.by.second(data)

## End(Not run)
data(events.data)
second.by.second(events.data)