Plotting factor variables
Usage
plot.factor(x, y, legend.text = levels(y),...)
Arguments
x,y
|
numeric or factor. y may be missing.
|
legend.text
|
a vector of text used to construct a legend for
the plot. Only used if y is present and a factor.
|
...
|
Further arguments to plot, see also
par.
|
Description
This functions implements a ``scatterplot'' method for
factor arguments of the generic
plot function.
Actually, boxplot or barplot are used when
appropriate.See Also
plot.default, plot.formula,
barplot, boxplot.Examples
data(plants)
plot(plants) # -> plot.data.frame
plot(weight ~ group, data=plants) # numeric vector ~ factor
plot(cut(weight,2) ~ group, data=plants) # factor ~ factor