[R] "continuous" boxplot?

[Karin Lagesen]

I have two vectors x and y, which I would like to plot against each
other. I am also displaying other data in this plot. However, I have
about 1 million points to plot, and just plotting them x againt y is
not very informative. What I'd like to do is to do sort of a
continuous box plot. 

My x values goes from -1 to 1 and my y values from 0 to 1, so I´d like
to plot the median and quantiles, and possibly also all of the
outliers somehow. Are there any facilities in R for doing something
like this, or would I need to do this the hard coded way?

Thankyou very much for your help!

Karin
-- 
Karin Lagesen, PhD student
karin.lagesen at medisin.uio.no
http://folk.uio.no/karinlag