\name{plot,flowDens-method}
\docType{methods}
\alias{plot,flowDens,missing-method}
\alias{plot,flowDens-method}
\alias{plot.flowDens}

\title{Contour or Image Plot of Clustering Results}

\description{
This method makes use of the \code{flowDens} object returned by \code{\link[=density.flowClust]{density}} to generate a contour or image plot.
}

\usage{
\S4method{plot}{flowDens}(x, type=c("contour", "image"), nlevels=30,
         scale=c("raw", "log", "sqrt"), color=c("rainbow",
         "heat.colors", "terrain.colors", "topo.colors",
         "cm.colors", "gray"), xlab=colnames(x@dx),
         ylab=colnames(x@dy), \dots)
}

\arguments{
\item{x}{The \code{flowDens} object returned from \code{\link[=density.flowClust]{density}}.}
\item{type}{Either \code{"contour"} or \code{"image"} to specify the type of plot desired.}
\item{nlevels}{An integer to specify the number of contour levels or colors shown in the plot.}
\item{scale}{If \code{"log"}, the logarithm of the density values will be used to generate the plot; similar interpretation holds for \code{"sqrt"}.  The use of a \code{log} or \code{sqrt} elicits more information about low density regions.}
\item{color}{A string containing the name of the function used to generate the desired list of colors.}
\item{xlab, ylab}{Labels for the \eqn{x}- and \eqn{y}-axes respectively.}
\item{\dots}{Other arguments to be passed to \code{contour} or \code{image}, for example, \code{drawlabels} and \code{add}.  Once an image plot is generated, users may impose a contour plot on it by calling this function with an additional argument \code{add=TRUE}.}
}

\author{
Raphael Gottardo <\email{raph@stat.ubc.ca}>, Kenneth Lo <\email{c.lo@stat.ubc.ca}>
}

\references{
Lo, K., Brinkman, R. R. and Gottardo, R. (2008) Automated Gating of Flow Cytometry Data via Robust Model-based Clustering. \emph{Cytometry A} \bold{73}, 321-332.
}

\seealso{
\code{\link{flowClust}}, \code{\link[=density.flowClust]{density}}
}

% \examples{
% 
% }

\keyword{graphs}