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\name{scale_linetype_discrete}
\alias{scale_linetype_discrete}
\alias{ScaleLinetypeDiscrete}
\alias{scale_linetype}
\title{scale\_linetype\_discrete}
\description{Scale for line patterns}
\details{
This page describes scale\_linetype\_discrete, see \code{\link{layer}} and \code{\link{qplot}} for how to create a complete plot from individual components.
}
\usage{scale_linetype_discrete(name = NULL, expand = c(0.05, 0.55),
limits = NULL, breaks = NULL, labels = NULL, formatter = identity,
drop = FALSE, legend = TRUE, ...)}
\arguments{
\item{name}{name of scale to appear in legend or on axis. Maybe be an expression: see ?plotmath}
\item{expand}{numeric vector of length 2, giving multiplicative and additive expansion factors}
\item{limits}{numeric vector of length 2, giving the extent of the scale}
\item{breaks}{numeric vector indicating where breaks should lie}
\item{labels}{character vector giving labels associated with breaks}
\item{formatter}{NULL}
\item{drop}{NULL}
\item{legend}{NULL}
\item{...}{ignored }
}
\seealso{\itemize{
\item \url{http://had.co.nz/ggplot2/scale_linetype_discrete.html}
}}
\value{A \code{\link{layer}}}
\examples{\dontrun{
ec_scaled <- data.frame(
date = economics$date,
rescaler(economics[, -(1:2)], "range")
)
ecm <- melt(ec_scaled, id = "date")
qplot(date, value, data=ecm, geom="line", group=variable)
qplot(date, value, data=ecm, geom="line", linetype=variable)
qplot(date, value, data=ecm, geom="line", colour=variable)
# See scale_manual for more flexibility
}}
\author{Hadley Wickham, \url{http://had.co.nz/}}
\keyword{hplot}
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