On 10/4/07, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: > On Thu, 4 Oct 2007, Caio Azevedo wrote: > > > Hi all, > > > > I have a sample of n values from a bivariate distribution (from a MCMC > > procedure). How could I draw a contour plot of "the joint density" based on > > that sample ? > > You need to estimate the density, and contour that estimate. MASS has > examples using its kde2d function. There are other methods available, > e.g. in package sm.
If you want something ready made, ggplot2 uses kde2d to draw contours from a kernel density estimate - http://had.co.nz/ggplot2/stat_density_2d.html Hadley -- http://had.co.nz/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
