https://github.com/cran/nacopula
Tip revision: 161411bb86f97e5a8bd89091cd61d03a33c2761a authored by Martin Maechler on 06 February 2012, 00:00:00 UTC
version 0.8-0
version 0.8-0
Tip revision: 161411b
interval.Rd
\name{interval}
\alias{interval}
\title{Construct Simple "interval" Object}
\description{
Easy construction of an object of class \code{\linkS4class{interval}},
using typical mathematical notation.
}
\usage{
interval(ch)
}
\arguments{
\item{ch}{a character string specifying the interval.}
}
\value{
an \code{\linkS4class{interval}} object.
}
\author{Martin Maechler}
\seealso{
the \code{\linkS4class{interval}} class documentation,
notably its reference to more sophisticated interval classes available
for \R.
}
\examples{
interval("[0, 1)")
## Two ways to specify open interval borders:
identical(interval("]-1,1["),
interval("(-1,1)"))
## infinite :
interval("[0, Inf)")
## arithmetic with scalars works:
4 + 2 * interval("[0, 1.5)") # -> [4, 7)
## str() to look at internals:
str( interval("[1.2, 7]") )
}
\keyword{arith}
\keyword{utilities}