hours(x) minutes(x) seconds(x)
"times"
chron
dates
times
x <- chron(dates = c("02/27/92", "02/27/92", "01/14/92", "02/28/92"), times = c("23:03:20", "22:29:56", "01:03:30", "18:21:03")) h <- hours(x) y <- runif(4) boxplot(y ~ h)
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