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\name{s.kde2d}
\alias{s.kde2d}
\title{ Scatter Plot with Kernel Density Estimate }
\description{
performs a scatter of points without labels by a kernel Density Estimation in One or Two Dimensions
}
\usage{
s.kde2d(dfxy, xax = 1, yax = 2, pch = 20, cpoint = 1, neig = NULL, cneig = 2,
xlim = NULL, ylim = NULL, grid = TRUE, addaxes = TRUE, cgrid = 1,
include.origin = TRUE, origin = c(0, 0), sub = "", csub = 1.25,
possub = "bottomleft", pixmap = NULL, contour = NULL,
area = NULL, add.plot = FALSE)
}
\arguments{
\item{dfxy}{ a data frame with at least two coordinates }
\item{xax}{ the column number for the x-axis }
\item{yax}{ the column number for the y-axis}
\item{pch}{ if \code{cpoint} > 0, an integer specifying the symbol or the
single character to be used in plotting points }
\item{cpoint}{ a character size for plotting the points, used with
\code{par("cex")*cpoint}. If zero, no points are drawn }
\item{neig}{ a neighbouring graph }
\item{cneig}{ a size for the neighbouring graph lines used with
par("lwd")*\code{cneig} }
\item{xlim}{ the ranges to be encompassed by the x axis, if NULL, they are
computed }
\item{ylim}{ the ranges to be encompassed by the y axis, if NULL, they are
computed }
\item{grid}{ a logical value indicating whether a grid in the background
of the plot should be drawn }
\item{addaxes}{ a logical value indicating whether the axes should be plotted }
\item{cgrid}{ a character size, parameter used with par("cex")* 'cgrid' to
indicate the mesh of the grid }
\item{include.origin}{ a logical value indicating whether the point "origin"
should be belonged to the graph space }
\item{origin}{ the fixed point in the graph space, for example c(0,0) the
origin axes }
\item{sub}{ a string of characters to be inserted as legend }
\item{csub}{ a character size for the legend, used with \code{par("cex")*csub} }
\item{possub}{ a string of characters indicating the sub-title position
("topleft", "topright", "bottomleft", "bottomright") }
\item{pixmap}{ an object \code{pixmap} displayed in the map background }
\item{contour}{ a data frame with 4 columns to plot the contour of the map :
each row gives a segment (x1,y1,x2,y2) }
\item{area}{ a data frame of class 'area' to plot a set of surface units
in contour }
\item{add.plot}{ if TRUE uses the current graphics window }
}
\value{
The matched call.
}
\author{ Daniel Chessel
}
\examples{
# To recognize groups of points
if(!adegraphicsLoaded()) {
data(casitas)
casitas.fuz <- fuzzygenet(casitas)
casitas.pop <- as.factor(rep(c("dome", "cast", "musc", "casi"), c(24, 11, 9, 30)))
casitas.pca <- dudi.pca(casitas.fuz, scannf = FALSE, scale = FALSE)
if(requireNamespace("MASS", quiet = TRUE)) {
s.kde2d(casitas.pca$li)
s.class(casitas.pca$li, casitas.pop, cell = 0, add.p = TRUE)
}
}
}
\keyword{multivariate}
\keyword{hplot}
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