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\name{plot.factor}
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\title{Plotting Factor Variables}
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\usage{
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\method{plot}{factor}(x, y, legend.text = levels(y), \dots)
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}
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\alias{plot.factor}
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\arguments{
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\item{x,y}{numeric or factor. \code{y} may be missing.}
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\item{legend.text}{a vector of text used to construct a legend for
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the plot. Only used if \code{y} is present and a factor.}
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\item{\dots}{Further arguments to \code{\link{plot}}, see also
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\code{\link{par}}.}
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}
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\description{
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This functions implements a \dQuote{scatterplot} method for
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\code{\link{factor}} arguments of the \emph{generic}
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\code{\link{plot}} function.
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Actually, \code{\link{boxplot}} or \code{\link{barplot}} are used when
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appropriate.
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}
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\seealso{
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\code{\link{plot.default}}, \code{\link{plot.formula}},
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\code{\link{barplot}}, \code{\link{boxplot}}.
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}
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\examples{
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data(PlantGrowth)
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plot(PlantGrowth) # -> plot.data.frame
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plot(weight ~ group, data = PlantGrowth) # numeric vector ~ factor
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plot(cut(weight, 2) ~ group, data = PlantGrowth) # factor ~ factor
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## passing "..." to barplot() eventually:
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plot(cut(weight, 3) ~ group, data = PlantGrowth, density = 16*(1:3),col=NULL)
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plot(PlantGrowth$group, axes=FALSE, main="no axes")# extremly silly
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}
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\keyword{hplot}
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