English: This image is an example of a Tukey biweight function. It was created under R by the following code: f = function(x, c) { if (abs(x) < c) {...
based on Image:Biweight.png by wikipedia:en:user:Deimos 28 This image is an example of the influence function of a Tukey biweight function. It was created...
Andrews wave a <- 1.34*pi wav <- a/(pi*z)*sin(pi*z/a)*(abs(z)<=a) # Tukey's biweight a <- 4.685 wtb <- (1-z^2/a^2)*(1-z^2/a^2)*(abs(z)<=a) plot(z, wh, type="l"...
