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\name{clip}
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\name{clip}
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\alias{clip}
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\alias{clip}
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\title{Set Clipping Region}
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\title{Set Clipping Region}
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\description{
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\description{
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  Set clipping region in user coordinates
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  Set clipping region in user coordinates.
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}
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}
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\usage{
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\usage{
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clip(x1, x2, y1, y2)
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clip(x1, x2, y1, y2)
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}
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}
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\arguments{
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\arguments{
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  reset it if \code{\link{par}("xpd")} has been changed.  However,
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  reset it if \code{\link{par}("xpd")} has been changed.  However,
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  functions such as \code{\link{box}}, \code{\link{mtext}},
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  functions such as \code{\link{box}}, \code{\link{mtext}},
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  \code{\link{title}} and \code{\link{plot.dendrogram}} can manipulate
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  \code{\link{title}} and \code{\link{plot.dendrogram}} can manipulate
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  the \code{xpd} setting.
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  the \code{xpd} setting.
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}
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}
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\value{
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  Invisible \code{NULL}.
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}
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\seealso{
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\seealso{
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  \code{\link{par}}
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  \code{\link{par}}
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}
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}
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\examples{
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\examples{
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x <- rnorm(1000)
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x <- rnorm(1000)
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clip(2, usr[2], usr[3], usr[4])
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clip(2, usr[2], usr[3], usr[4])
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hist(x, col = 'blue', add = TRUE)
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hist(x, col = 'blue', add = TRUE)
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do.call("clip", as.list(usr))  # reset to plot region
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do.call("clip", as.list(usr))  # reset to plot region
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}
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}
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\keyword{dplot}
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\keyword{dplot}
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\keyword{iplot}