Boxplot

0th

Percentile

Boxplots With Point Identification

Boxplot is a wrapper for the standard R

Keywords
hplot
Usage
Boxplot(y, ...)

## S3 method for class 'default':
Boxplot(y, g, labels, id.method = c("y", "identify", "none"),
id.n=10, xlab, ylab, ...)

## S3 method for class 'formula':
Boxplot(formula, data = NULL, subset, na.action = NULL, labels.,
id.method = c("y", "identify", "none"), xlab, ylab, ...)
Arguments
y
a numeric variable for which the boxplot is to be constructed.
g
a grouping variable, usually a factor, for constructing parallel boxplots.
labels, labels.
point labels; if not specified, Boxplot will use the row names of the data argument, if one is given, or observation numbers.
id.method
if "y" (the default), all outlying points are labeled; if "identify", points may be labeled interactive; if "none", no point identification is performed.
id.n
up to id.n high outliers and low outliers will be identified in each group, (default, 10).
xlab, ylab
text labels for the horizontal and vertical axes; if missing, Boxplot will use the variable names.
formula
a model' formula, of the form ~ y to produce a boxplot for the variable y, or of the form y ~ g to produce parallel boxplots for y within levels of the grouping variable g, usuall
data, subset, na.action
as for statistical modeling functions (see, e.g., lm).
...
further arguments to be passed to boxplot.
code

boxplot

References

Fox, J. and Weisberg, S. (2011) An R Companion to Applied Regression, Second Edition, Sage.

boxplot

Aliases
• Boxplot
• Boxplot.default
• Boxplot.formula
Examples
Boxplot(~income, data=Prestige, id.n=Inf) # identify all outliers
Boxplot(income ~ type, data=Prestige)
with(Prestige, Boxplot(income, labels=rownames(Prestige)))
with(Prestige, Boxplot(income, type, labels=rownames(Prestige)))`
Documentation reproduced from package car, version 2.0-13, License: GPL (>= 2)

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