geom_tufteboxplot: Tufte's Box Blot

Description

Edward Tufte's revisions of the box plot as described in The Visual Display of Quantitative Information.

Usage

geom_tufteboxplot(mapping = NULL, data = NULL, stat = "fivenumber",
  position = "identity", outlier.colour = "black", outlier.shape = 19,
  outlier.size = 1.5, outlier.stroke = 0.5, voffset = 0.01,
  hoffset = 0.005, na.rm = FALSE, show.legend = NA, inherit.aes = TRUE,
  median.type = "point", whisker.type = "line", ...)

Arguments

mapping

Set of aesthetic mappings created by aes or aes_. If specified and inherit.aes = TRUE (the default), is combined with the default mapping at the top le

data

A data frame. If specified, overrides the default data frame defined at the top level of the plot.

stat

The statistical transformation to use on the data for this layer, as a string.

position

Position adjustment, either as a string, or the result of a call to a position adjustment function.

outlier.colour

colour for outlying points

outlier.shape

shape of outlying points

outlier.size

size of outlying points

outlier.stroke

stroke for outlying points

voffset

controls the size of the gap in the line representing the median when median.type = 'line'. This is a fraction of the range of y.

hoffset

controls how much the interquartile line is offset from the whiskers when median.type = 'line'. This is a fraction of the range of x.

na.rm

If FALSE (the default), removes missing values with a warning. If TRUE silently removes missing values.

show.legend

logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes.

inherit.aes

If FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g.

median.type

If 'point', then the median is represented by a point, and the interquartile range by a gap in the line. If median.type='line', then the interquartile range is represnted by a line, possibly offset, and the median by a gap in the

whisker.type

If 'line', then whiskers are represented by lines. If 'point', then whiskers are represented by points at ymin and ymax.

...

other arguments passed on to layer. There are three types of arguments you can use here:

Aesthetics: to set an aesthetic to a fixed value, likecolor = "red"orsize = 3.

Aesthetics

x [required]
y [required]
colour
size
linetype
shape
fill
alpha

References

Tufte, Edward R. (2001) The Visual Display of Quantitative Information, Chapter 6.

McGill, R., Tukey, J. W. and Larsen, W. A. (1978) Variations of box plots. The American Statistician 32, 12-16.

Examples

Run this code

library("ggplot2")
p <- ggplot(mtcars, aes(factor(cyl), mpg))
## with a point for the median and lines for whiskers
p + geom_tufteboxplot()
## with a line for the interquartile range and points for whiskers
p + geom_tufteboxplot(median.type = "line", whisker.type = "point", hoffset = 0)
## with a wide line for the interquartile range and lines for whiskers
p + geom_tufteboxplot(median.type = "line", hoffset = 0, width = 3)
## with an offset line for the interquartile range and lines for whiskers
p + geom_tufteboxplot(median.type='line')