Epa.kernel {extremefit}

Epanechnikov kernel function

Description

Epanechnikov kernel function.

Usage

Epa.kernel(x)

Arguments

x

vector.

Details

Epanechnikov kernel:

K(x) = 3/4 ( 1 - x^2 ) (abs(x)<=1)

We recommend a critical value of 6.1 for this kernel function.

Examples

plot(function(x) Epa.kernel(x), -2, 2, ylab = "Epanechnikov kernel function")