R help - Jul 2011 - plot means ?

Hi,
I need this plot:
given: x,y - numerical vectors of length N
plot xi vs mean(yj such that |xj - xi|<epsilon)
(running mean?)
alternatively, discretize X as if for histogram plotting and plot mean y
over the center of the histogram group.

is there a simple way?

thanks!

-- 
Sam Steingold (http://sds.podval.org/) on CentOS release 5.6 (Final) X
11.0.60900031
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On Jul 11, 2011, at 3:18 PM, Sam Steingold wrote:
> Hi,
> I need this plot:
> given: x,y - numerical vectors of length N
> plot xi vs mean(yj such that |xj - xi|<epsilon)
> (running mean?)
> alternatively, discretize X as if for histogram plotting and plot  
> mean y
> over the center of the histogram group.
It sounds as though you asking for smoothing splines with an  
adjustable band width ... something that is very easy in R.
>
> is there a simple way?
>
> thanks!
>
> -- 
> Sam Steingold (http://sds.podval.org/) on CentOS release 5.6 (Final)  
> X 11.0.60900031

David Winsemius, MD
West Hartford, CT