Dear Ying-Chao
If you have only one-dimensional, I understand that you can reduce your data
on a XY list.
Taking it in account, how about you use "gam" package/function?

require(gam)
x<- seq(from=-5, to=5, by=0.2)
y<-sin(x)+runif(length(x))+x/2

plot(y~x)

# k is the kernel size
for(k in 3:8) {
smoth2d<-gam(y~s(x,k))
lines(predict(smoth2d)~x, col=k)
}

Best wishes,

miltinho astronauta
brazil






On Sun, Sep 28, 2008 at 1:03 PM, Ying-Chao Hung <hungy@stat.ncu.edu.tw>wrote:

> To anyone who can help me:
> I found that the function "smooth.ppp" in the package "spatstat" provides
> the kernel estimate for the intensity function of a "two-dimensional" point
> process with marks.
> Does anyone know that which package can do this for simply a "one-
> dimensional" point process with marks?
> I've been searching all over the R site but still can not find the
> packages.
> Thanks a lot.
>
> Ying-Chao Hung
>
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