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\name{lines.circular}
\alias{lines.circular}
\title{Add Connected Line Segments to a Circular Plot}
\description{
A method taking coordinates in a polar system and joining the corresponding points with line segments.
}
\usage{
\method{lines}{circular}(x, y, join = FALSE, nosort = FALSE, offset=1, shrink=1,
plot.info = NULL, zero = NULL, rotation = NULL, modulo = NULL, \dots)
}
\arguments{
\item{x}{a vector of class \code{circular}.}
\item{y}{a vector with the same length as 'x'.}
\item{join}{logical: if \code{TRUE} the first and the last values are joined by a line.}
\item{nosort}{logical: if \code{TRUE} the data are not sorted before
join them.}
\item{offset}{the radius of the circle}
\item{shrink}{parameter that controls the size of the plotted function.
Default is 1.}
\item{plot.info}{an object from another circular graphic function.}
\item{zero}{the zero of the axis.}
\item{rotation}{the rotation of the axis.}
\item{modulo}{the modulo applied to 'x' before sorting.}
\item{\dots}{graphical parameters passed to \code{\link{lines.default}}.}
}
\value{
A list with information on the plot: zero, rotation and next.points.
}
\author{Claudio Agostinelli}
\seealso{\code{\link{plot.circular}}}
\examples{
x <- rvonmises(20, circular(0), 10)
y <- runif(20, 0.5, 1)
plot(x, shrink=2)
lines(x, y)
}
\keyword{hplot}
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