| boxplot.formula {base} | R Documentation |
Formula Notation for Boxplots
Description
Produces side by side boxplots from a number of vectors, using formula notation.
Usage
boxplot.formula(formula, data = NULL, subset, na.action, ...)
Arguments
formula |
a formula, such as |
data |
a data.frame (or list) from which the variables in
|
subset |
an optional vector specifying a subset of observations to be used in the fitting process. |
na.action |
a function which indicates what should happen when
the data contain |
... |
further arguments to the default boxplot method and
graphical parameters may also be passed as arguments, see
|
Details
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.
Value
See the help for boxplot.default.
See Also
boxplot,
boxplot.default.
Examples
data(OrchardSprays)
boxplot(decrease ~ treatment, data = OrchardSprays, log = "y", col = "bisque")