File:Piechart.svg

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Piechart.svg‎ (SVG file, nominally 703 × 321 pixels, file size: 13 KB)

[edit] Summary

Example of a pie chart, along with a bar plot showing the same data and indicating that the pie chart is not the best possible chart for this particular dataset.

The graphic was created by User:Schutz for Wikipedia on 27 December 2006, using the R statistical project. The program that generated the graphic is given below; the data and the idea are from w:Image:PieCompare.png by w:User:Chrispounds. The graph was exported in postscript format, converted to SVG using the pstoedit command, and the layout was slightly modified using Inkscape before upload.

 
  a <- c(17, 18, 20, 22, 23)
  cols <- c("red", "blue", "green", "yellow", "black")
  
  postscript("piechart.eps", paper="special", width=8, height=4)
  par(mfrow=c(1,2))
  par(cex=1.2)
  par(font=2)
  defaultmar <- par("mar")
  par(mar=c(0,0,0,0))  # Margins
  par(las=1)           # Axis labels always horizontal
  par(font.axis=2)
  pie(a, init=90, clockwise=T, col=cols)
  par(mar=defaultmar-c(1.7,2,2.5,1))
  barplot(rev(a), horiz=T, xlim=c(0,25), col=rev(cols), border=0, names.arg=5:1, space=0.8)
  dev.off()

This chart was created with R.

[edit] Licensing

I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	11:39, 1 January 2007		703×321 (13 KB)	Schutz (talk \| contribs)
	01:32, 27 December 2006		680×320 (15 KB)	Schutz (talk \| contribs)
	01:26, 27 December 2006		663×293 (15 KB)	Schutz (talk \| contribs)
	01:06, 27 December 2006		579×282 (14 KB)	Schutz (talk \| contribs)
	00:53, 27 December 2006		670×300 (15 KB)	Schutz (talk \| contribs)	(Example of a pie chart)