[R] Locfit package (was Density Estimation)
Jacob van Wyk
jlvw at na.rau.ac.za
Mon Mar 13 09:51:16 CET 2006
Thank you for the response.
Indeed, my subject line was ill-specified. My apologies.
Yes, it seems as if "flim" should be "xlim"; also, I should have just
added the same to the plot call.
>>> Prof Brian Ripley <ripley at stats.ox.ac.uk> 03/13/06 9:58 AM >>>
Please use an informative subject line.
Your reference is vague. There have been many versions of locfit, and
quite a lot of code in earlier documentation no longer works,
that which precedes Loader's book.
fit.of <- locfit(~geyser,xlim=c(1,6),alpha=c(0.15,0.9))
plot(fit.of, get.data=TRUE, mpv=200, xlim=c(1,6))
works for me, and I got there from the help files.
On Mon, 13 Mar 2006, Jacob van Wyk wrote:
> I am trying to use the package LocFit to follow the example given in
> Introductory note of C Loader concerning density estimation. It
> the "geyser" dataset (107 observations on durations, inlc in the
> I have tried the following (using the latest version of R):
> fit.of <- locfit(~geyser,flim=c(1,6),alpha=c(0.15,0.9))
> This produces a plot (after several warnings).
> My question is: how can I get the plot to cover the range: 1 - 6 ?
> durations. The plot covers the observed data range only.
> It appears there is a problem with
> flim is not actually correct, and consequently c(1,6) is not used
> correctly. I have also tried to use "xlim=c(1,6)", but without
> I need some help on this please.
> Jacob L van Wyk
> Department of Statistics
> University of Johannesburg APK
> P O Box 524
> Auckland Park 2006
> South Africa
> Tel: +27-11-489-3080
> Fax: +27-11-489-2832
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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