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File:GevDensity 2.svg

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Original file (SVG file, nominally 630 × 630 pixels, file size: 62 KB)

Summary

Description
English: Generallised extreme value distribution.
Date 4 January 2014 (original upload date)
Source Created by R D Gill, 4 January 2013, using R script
Author R D Gill
Other versions

Computer code

svg("GevDensity.svg")
x <- seq(from = -4, to = +4, length = 200)
xi <- 0.5
s <- (1 + xi * x)^(-1/xi -1)
t <- (1 + xi * x)^(-1/xi)
u <-  x >  -1/xi
plot(x, s*exp(-t)*u, type="l", col="blue", 
ylim=c(0,0.5), lwd=2,
main = "Generalized extreme value densities",
ylab = "Density", xlab = "x",
sub = "all with mu=0, sigma=1")
xi <- -0.5
s <- (1 + xi * x)^(-1/xi -1)
t <- (1 + xi * x)^(-1/xi)
u <- x < -1/xi
lines(x, s*exp(-t)*u, col="green", lwd=2)
xi <- 0
s <- exp(-x)
t <- exp(-x)
lines(x,s*exp(-t), col="red", lwd=2)
legend(-4,0.5,c("xi = -0.5","xi=0","xi=+0.5"),lwd=2,col=c("green","red","blue"))
graphics.off()

Licensing

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

Original upload log

The original description page was here. All following user names refer to en.wikipedia.
Date/Time Dimensions User Comment
2014-01-05 13:46 630×630× (63236 bytes) Gill110951 More small improvements (support endpoints marked, better legend)
2014-01-05 09:50 630×630× (56224 bytes) Gill110951 Improved annotation (Greek symbols instead of words)
2014-01-04 19:38 630×630× (55321 bytes) Gill110951 {{cc-by-sa-3.0|Created by R D Gill, 4 January 2013, using R script} svg("GevDensity.svg") x <- seq(from = -4, to = +4, length = 200) xi <- 0.5 s <- (1 + xi * x)^(-1/xi -1) t <- (1 + xi * x)^(-1/xi) u <- x > -1/xi plot(x, s*exp(-t)*u, type="l",...

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4 January 2014

File history

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Date/TimeThumbnailDimensionsUserComment
current19:01, 14 November 2015Thumbnail for version as of 19:01, 14 November 2015630 × 630 (62 KB)OgreBot(BOT): Reverting to most recent version before archival
19:01, 14 November 2015Thumbnail for version as of 19:01, 14 November 2015630 × 630 (54 KB)OgreBot(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2014-01-04 19:38:56 by Gill110951
18:59, 14 November 2015Thumbnail for version as of 18:59, 14 November 2015630 × 630 (62 KB)Stefan2Transferred from en.wikipedia

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