[R] evaluating density objects
ripley@stats.ox.ac.uk
ripley at stats.ox.ac.uk
Thu Nov 14 18:17:43 CET 2002
On Thu, 14 Nov 2002, Hinnerk Boriss wrote:
> Is there a way to evaluate "density" objects other than with plot, so
> that I can write data points to a file and plot them with gnuplot? Can
> anyone help?
?density tells you
Value:
If `give.Rkern' is true, the number R(K), otherwise an object with
class `"density"' whose underlying structure is a list containing
the following components.
x: the `n' coordinates of the points where the density is
estimated.
y: the estimated density values.
...
so you could for example do
dens <- density(...)
write.table(data.frame(x=dens$x, y=dens$y), "somefile")
I have no idea why anyone would want to plot in gnuplot rather than in R,
and hence don't know what formats gnuplot accepts.
--
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 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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