[R] FW: Nadaraya-Watson kernel

Liaw, Andy andy_liaw at merck.com
Thu Nov 7 15:06:49 CET 2013

Use KernSmooth (one of the recommended packages that are included in R distribution).  E.g.,

> library(KernSmooth)
KernSmooth 2.23 loaded
Copyright M. P. Wand 1997-2009
> x <- seq(0, 1, length=201)
> y <- 4 * cos(2*pi*x) + rnorm(x)
> f <- locpoly(x, y, degree=0, kernel="epan", bandwidth=.1)
> plot(x, y)
> lines(f, lwd=2)


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Ms khulood aljehani
Sent: Tuesday, November 05, 2013 9:49 AM
To: r-help at stat.math.ethz.ch
Subject: [R] FW: Nadaraya-Watson kernel

From: aljehani-k at hotmail.com
To: r-help at r-project.org
Subject: Nadaraya-Watson kernel
Date: Tue, 5 Nov 2013 17:42:13 +0300

i want to compute the Nadaraya-Watson kernel estimation when the kernel function is Epanchincov kernel
i use the command
ksmooth(x, y, kernel="normal", bandwidth ,....)
the argmunt ( kernel="normal" ) accept normal and box kernels
i want to compute it if the kerenl = Epanchincov
thank you
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