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% File src/library/graphics/man/hist.POSIXt.Rd
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% File src/library/graphics/man/hist.POSIXt.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2015 R Core Team
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% Copyright 1995-2016 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{hist.POSIXt}
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\name{hist.POSIXt}
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\alias{hist.POSIXt}
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\alias{hist.POSIXt}
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\alias{hist.Date}
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\alias{hist.Date}
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  Note that unlike the default method, \code{breaks} is a required argument.
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  Note that unlike the default method, \code{breaks} is a required argument.
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  Using \code{breaks = "quarters"} will create intervals of 3 calendar
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  Using \code{breaks = "quarters"} will create intervals of 3 calendar
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  months, with the intervals beginning on January 1, April 1,
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  months, with the intervals beginning on January 1, April 1,
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  July 1 or October 1, based upon \code{min(x)} as appropriate.
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  July 1 or October 1, based upon \code{min(x)} as appropriate.
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  With the default \code{right = TRUE}, breaks will be set
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  With the default \code{right = TRUE}, breaks will be set
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  on the last day of the previous period when \code{breaks} is
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  on the last day of the previous period when \code{breaks} is
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  \code{"months"}, \code{"quarters"} or \code{"years"}.  Use
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  \code{"months"}, \code{"quarters"} or \code{"years"}.  Use
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  \code{right = FALSE} to set them to the first day of the
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  \code{right = FALSE} to set them to the first day of the
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  interval shown in each bar.
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  interval shown in each bar.
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}
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}
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\value{
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\value{
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  An object of class \code{"histogram"}: see \code{\link{hist}}.
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  An object of class \code{"histogram"}: see \code{\link{hist}}.
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}
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}
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\examples{
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\examples{
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hist(.leap.seconds, "years", freq = TRUE)
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hist(.leap.seconds, "years", freq = TRUE)
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hist(.leap.seconds,
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hist(.leap.seconds,
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     seq(ISOdate(1970, 1, 1), ISOdate(2020, 1, 1), "5 years"))
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     seq(ISOdate(1970, 1, 1), ISOdate(2020, 1, 1), "5 years"))
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rug(.leap.seconds, lwd=2)
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## 100 random dates in a 10-week period
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## 100 random dates in a 10-week period
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random.dates <- as.Date("2001/1/1") + 70*stats::runif(100)
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random.dates <- as.Date("2001/1/1") + 70*stats::runif(100)
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hist(random.dates, "weeks", format = "\%d \%b")
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hist(random.dates, "weeks", format = "\%d \%b")
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}
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}