R help - Nov 2005 - 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

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
> 
>