Dear all, I want to use kernel estimator to smooth some step funtions such as the empirical distribution and hazard function in survival analysis. Is there a function or package to deal with it in R? How do I use it? Thanks for your help. Jimmy
Please, please read the docs! That's what they're for.
RsiteSearch("smoothing")
help.search("smoothing")
-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
"The business of the statistician is to catalyze the scientific learning
process." - George E. P. Box
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Zhu,
> Chao (UMC-Student)
> Sent: Tuesday, November 01, 2005 8:57 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] kernel smoothing
>
> Dear all,
>
> I want to use kernel estimator to smooth some step funtions
> such as the empirical distribution and hazard function in
> survival analysis. Is there a function or package to deal
> with it in R?
> How do I use it?
>
> Thanks for your help.
>
> Jimmy
>
>
Smoothing CDF or survival functions are not quite the same as usual scatterplot smoothing, at least because of the monotonicity contraint. I don't know of kernel methods for smoothing such functions, but I believe people have used splines. I'm no expert though. It's best for you to consult an expert or search the literature. Andy> From: Zhu, Chao (UMC-Student) > > Dear all, > > I want to use kernel estimator to smooth some step funtions > such as the empirical distribution and hazard function in > survival analysis. Is there a function or package to deal > with it in R? > How do I use it? > > Thanks for your help. > > Jimmy > >