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) {
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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copyrighted, dedicated to the public domain by copyright holder<\/a>"}},"text\/plain":{"en":{"P6216":"copyrighted, dedicated to the public domain by copyright holder"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P6216 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
released into the public domain by the copyright holder<\/a>"}},"text\/plain":{"en":{"P275":"released into the public domain by the copyright holder"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P275 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
based 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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