bagplot() function available in library aplpack(see the documentation, PDF file in package for detailed explanation).

• bagplot(lit,gnpcap)
• bagplot.pairs(cbind(gnpgrow,urb,lifeem,lifeef))

Related command:

• plothulls(cbind(lifeem,gnpcap),n.hull=10)

• See this page for some papers on the bagplot, as well as code for Splus (A graphical function that does not work in R!), Matlab and Fortran.

• Rousseeuw, P.J., Ruts, Ida, Tukey. J.W., The Bagplot: A Bivariate Boxplot, The American Statistician, 1999, Vol 53,4