I suspect Prof. Ripley's response suffices. However, there *is* a Parzen
kernel for kernel smoothing:
Parzen K(z) = { 4/3 - 8z^2 + 8|z|^3 if |z| <= 1/2
8(1 -|z|)^3/3 if 1/2 < |z| <= 1
0 otherwise
If I'm not mistaken, this appeared in Parzen's original 1962 paper on
kernel
density estimation. I also seem to recall that this was available at one
time in ksmooth() in S(plus).
Cheers,
Andy
> From: ripley at stats.ox.ac.uk [mailto:ripley at stats.ox.ac.uk]
>
> Parzen windows is an engineer's term for kernel density estimation.
> So, see packages KernSmooth, sm, ....
>
> On Fri, 26 Jul 2002, Adaikalavan Ramasamy wrote:
>
> > Does anyone know if there is a function in R that fits a
> Parzen Window ?
> >
> > I have searched the mail archives and the packages to no
> avail. Perhaps it
> > has a different name or implemented differently. I do not
> mind trying to
> > write the codes but rather not waste time if one exists
> already. Many thanks
> > in advance.
> >
> > Adai.
> >
> >
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> --
> 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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