[R] Contour plot (level curves)
Prof Brian Ripley
ripley at stats.ox.ac.uk
Thu Oct 4 15:49:36 CEST 2007
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.
> Sorry if I was not too clear.
> Thans in advance,
> [[alternative HTML version deleted]]
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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