This function takes a data frame of activity counts and adds a column of time stamps in POSIXct format. The time stamps start at "2012-04-07 00:00:30" and increase by 30 seconds for each row of the data frame.
This function takes a data frame of activity counts and adds a column of time stamps in POSIXct format. The time stamps start at "2012-04-07 00:00:30" and increase by 30 seconds for each row of the data frame.