bagplot: Bagplot

In weird: Functions and Data Sets for "That's Weird: Anomaly Detection Using R" by Rob J Hyndman

Bagplot

Description

Produces a bivariate bagplot. A bagplot is analagous to a univariate boxplot, except it is in two dimensions. Like a boxplot, it shows the median, a region containing 50% of the observations, a region showing the remaining observations other than outliers, and any outliers.

Usage

gg_bagplot(data, var1, var2, color = "#00659e", show_points = FALSE, ...)

Arguments

data	A data frame or matrix containing the data.
var1	The name of the first variable to plot (a bare expression).
var2	The name of the second variable to plot (a bare expression).
color	The base color to use for the median. Other colors are generated as a mixture of color with white.
show_points	A logical argument indicating if a regular bagplot is required (FALSE), or if a scatterplot in the same colors is required (TRUE).
...	Other arguments are passed to the compute.bagplot function.

Value

A ggplot object showing a bagplot or scatterplot of the data.

Author(s)

Rob J Hyndman

References

Rousseeuw, P. J., Ruts, I., & Tukey, J. W. (1999). The bagplot: A bivariate boxplot. The American Statistician, 52(4), 382–387.

Rob J Hyndman (2026) "That's weird: Anomaly detection using R", Section 5.6, https://OTexts.com/weird/.

See Also

bagplot

Examples

gg_bagplot(n01, v1, v2)
gg_bagplot(n01, v1, v2, show_points = TRUE)

weird documentation built on Jan. 27, 2026, 9:06 a.m.