psi.w: Tukey bi-square weight function

Description Usage Arguments Details Value Author(s)

Description

Tukey bi-square weight function.

Usage

1
psi.w(r, k = 4.685)

Arguments

r

A real number.

k

Tuning constant.

Details

he weight function used in the re-weighted least squares iterations.

Value

A real number.

Author(s)

Alejandra Martinez, Matias Salibian-Barrera


alemermartinez/RMI-GitHub documentation built on May 9, 2019, 2:21 a.m.