addBoxplot: Add a box plot in the margin of a scatterplot

In mikemeredith/MMmisc: Stuff that Mike wants to have available

Description

Add a box plot in the margin of a scatterplot

Usage

addBoxplot(x, gap = 0.01, side, outpch = 20)

Arguments

x	a numeric vector, the data to display in the boxplot
gap	distance above or right of the edge of the plot, as a proportion of the width of the plot; negative values will position the boxplot below or left of the edge.
side	1=bottom, 2=left, 3=top, 4=right
outpch	plotting symbol to use for outliers; choose one which won't be confused with the points in the scatterplot.

Details

Box plots of each variable along the appropriate side are a nice idea (cf Quinn & Keough) but take up lots of space and require multiplot layout. As Tufte points out, the box isn't necessary, so this fits a box-ish plot into the frame of the scatter plot.

Value

Nothing; used for its plotting side-effect.

Author(s)

Mike Meredith, 29 April 2012

References

Quinn, G P; M J Keough 2002. Experimental design and data analysis for biologists. Cambridge University Press, Cambridge UK.

Examples

data(trees)
plot(Volume ~ Girth, data=trees, bty='l')
addBoxplot(trees$Volume, side=4)
addBoxplot(trees$Girth, side=3)

mikemeredith/MMmisc documentation built on Nov. 8, 2019, 11:34 p.m.