Size of this PNG preview of this SVG file: 649 × 589 pixels. Other resolutions: 264 × 240 pixels | 529 × 480 pixels | 846 × 768 pixels | 1,128 × 1,024 pixels | 2,257 × 2,048 pixels.
Original file (SVG file, nominally 649 × 589 pixels, file size: 50 KB)
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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()
|
This work has been released into the public domain by its author, Deimos 28, at the English Wikipedia project. This applies worldwide. In case this is not legally possible: |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:57, 18 November 2007 | | 649 × 589 (50 KB) | Eug | 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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