Image:Biweight.png

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Biweight.png‎ (480 × 480 pixel, file size: 1 KB, MIME type: image/png)

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[edit] Summary

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) {
       return(x*((1-(x/c)^2))^2)
   }
   else {
       return(0)
   }

}

x= (-1000:1000)/100

y[1] = f(x[1], 3)

for (i in x[-1]) {y = c(y, f(i, 3))}

jpeg(filename = "biweight.jpg", width = 480, height = 480)

plot(x, y, type="l", col=2)

dev.off()

Description
Source

w:Image:Biweight.jpg
Date

20 November 2005
Author

wikipedia:en:user:Deimos 28
Permission
Public domain This image has been (or is hereby) released into the public domain by its author, Deimos 28 at the wikipedia project. This applies worldwide.

In case this is not legally possible:
Deimos 28 grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Other versions w:Image:Biweight.jpg

The following pages on the English Wikipedia link to this file (pages on other projects are not listed):

Retrieved from "http://en.wikipedia.org../../../b/i/w/Image%7EBiweight.png_cd9f.html"