File:Biweight.svg

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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 under R by the following code:

f = function(x, c) {     if (abs(x) < c) {        return(x*((1-(x/c)^2))^2)    }    else {        return(0)    } } x <- (-1000:1000)/100 sapply(x, f, c=3) library(Cairo) CairoSVG(file='biweight.svg') plot(x, y, type="l", col=2) dev.off() 


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current02:57, 18 November 2007Thumbnail for version as of 02:57, 18 November 2007649 × 589 (50 KB)Eugbased on [Image:Biweight.png] by wikipedia:en:user:Deimos 28 This image is an example of a Tukey biweight function. It was created under R by the following code: <pre> f = function(x, c) { if (abs(x) < c) { return(x*((1-(x/c)^2))^2) }

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