File:Simpsons-vector.svg

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Original file (SVG file, nominally 430 × 430 pixels, file size: 5 KB)

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Summary

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Description Illustration of Simpson's paradox applied to vectors
Date
Source Own work
Author Schutz
SVG development
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The SVG code is valid.
 
This diagram was created with R.
Source code
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R code

success1 <- c( 8, 1)
  total1   <- c(10,10)
  success2 <- c( 6, 3)
  total2   <- c( 6,17)
  
  printaddvec <- function( vec1, vec2, ...) {
    segments( vec1[1], vec1[2], vec1[1]+vec2[1], vec1[2]+vec2[2], lty=3, ... )
    segments( vec2[1], vec2[2], vec1[1]+vec2[1], vec1[2]+vec2[2], lty=3, ... )
  
    arrows(0,0, vec1[1], vec1[2], angle=20, code=2, lwd=2, ...)
    arrows(0,0, vec2[1], vec2[2], angle=20, code=2, lwd=2, ...)
    arrows(0,0, vec1[1]+vec2[1], vec1[2]+vec2[2], angle=20, code=2,
           lwd=2, lty=2, ...)
  
    # Redraw the end of the arrows
    arrows(0.99*(vec1[1]+vec2[1]), 0.99*(vec1[2]+vec2[2]),
           vec1[1]+vec2[1], vec1[2]+vec2[2], code=2, lwd=2, angle=20, ...)
  }
  
  postscript("simpsons-vector.eps", paper="special", height=5, width=5,
             horizontal=F)
  par(xaxs="i")
  par(yaxs="i")
  par(cex=1.2)
  par(las=1)
  par(mgp=c(2.5 ,1 ,0))
  par(mar=c(4.1, 4.1, 0.6, 0.6))
  
  plot(0, type="n", xlim=c(0,25), ylim=c(0,10), pty="s", xlab="Total", ylab="Successes")
  
  printaddvec( c(total1[1], success1[1]), c(total1[2], success1[2]), col="blue")
  printaddvec( c(total2[1], success2[1]), c(total2[2], success2[2]), col="red")
  
  text(total1[2], success1[2]+0.0, "1", pos=4, col="blue", cex=1.2)
  text(total2[2], success2[2]+0.0, "1", pos=4, col="red",  cex=1.2)
  text(total1[1]+0.0, success1[1], "2", pos=3, col="blue", cex=1.2)
  text(total2[1]+0.0, success2[1], "2", pos=3, col="red",  cex=1.2)
  text(sum(total1), sum(success1)+0.0, "+", pos=3, col="blue", cex=1.2)
  text(sum(total2), sum(success2)+0.0, "+", pos=3, col="red", cex=1.2)
  
  dev.off()

The graphic was created by User:Schutz for Wikipedia on 26 August 2007, using the R statistical project. The program that generated and exported the graphic is given above; the uploaded version was generated by converting the EPS file generated by R to SVG format using pstoedit command. The layout was slightly modified using Inkscape before upload.

Licensing

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I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic 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.
You may select the license of your choice.

File history

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Date/TimeThumbnailDimensionsUserComment
current18:01, 10 June 2018Thumbnail for version as of 18:01, 10 June 2018430 × 430 (5 KB)JoKalliauer (talk | contribs)<g transform="scale(1000)"> kerning error: bugzilla:34947
21:53, 1 November 2012Thumbnail for version as of 21:53, 1 November 2012430 × 430 (32 KB)Tiger66 (talk | contribs)correction des erreurs.
15:46, 26 August 2007Thumbnail for version as of 15:46, 26 August 2007430 × 430 (10 KB)Schutz (talk | contribs){{Information |Description=Illustration of w:Simpson's paradox applied to vectors |Source=self-made |Date=26 August 2007 |Author=User:Schutz |Permission=see below }} The graphic was created by User:Schutz for Wikipedia on 26 August 2007, usin

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