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Reformat the time variable to match analysis-ready format
ChangeTimeVar(datain, col_idx, format = "%Y-%m-%d %H:%M:%S")
dataframe with formatted time values
input dataset, must be a data frame
index of column to convert to date object
format of input date data, default is YYYY-MM-DD HH:MM:SS
data("SleepDiary1Week") ChangeTimeVar( SleepDiary1Week, col_idx = c(5:18), format = "%Y-%m-%d %H:%M:%S")
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