boxplot.formula {base} | R Documentation |
Produce box-and-whisker plot(s) of the given (grouped) values using formula notation.
boxplot(formula, data = NULL, ..., subset)
formula |
a formula, such as y ~ x . |
data |
a data.frame (or list) from which the variables in
formula should be taken. |
... |
arguments to the default boxplot method and graphical
parameters may also be passed as arguments, see par . |
subset |
an optional vector specifying a subset of observations to be used for plotting. |
This is a method of the generic function boxplot
. It
operates by setting up the data from the formula specification, and
then calling boxplot.default
.
See boxplot.stats
.
data(OrchardSprays) boxplot(decrease ~ treatment, data = OrchardSprays, log = "y", col="bisque")