[R] bihistogram plots

[Hal Varian]

Does anyone have code to plot bihistograms in R?

See http://www.itl.nist.gov/div898/handbook/eda/section3/bihistog.htm 
for a description of
a bihistogram.

-- 
Hal Varian                 voice: 510-643-4757
SIMS, 102 South Hall       fax:   510-642-5814
University of California   hal at sims.berkeley.edu
Berkeley, CA 94720-4600    http://www.sims.berkeley.edu/~hal