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R-source code:

parliament<-function(x, labels=names(x), edges=5000, col=rainbow(length(x)), rad.in=0.25, ...) {
  plot(c(-1,1), c(0,1), type="n", axes=FALSE, xlab="", ylab="", ...)
  y=c(0,pi*cumsum(x)/sum(x))
  ang=seq(0,pi,length=edges)
  for (aktiv in 1:(length(y)-1)) {
    poly=ang[ y[aktiv]<=ang & ang<=y[aktiv+1] ]
    polygon(c(cos(poly),0), c(sin(poly),0),col=col[aktiv],border=col[aktiv])
    text( (cos(y[aktiv])+cos(y[aktiv+1])+rad.in*cos(y[aktiv])+rad.in*cos(y[aktiv+1]))/4, (sin(y[aktiv])+sin(y[aktiv+1])+rad.in*sin(y[aktiv])+rad.in*sin(y[aktiv+1]))/4, col="white", labels=paste(labels[aktiv], "\n" ,x[aktiv]), cex=1.2, adj=c(0.5,0.5))
  }
  polygon(rad.in*cos(ang),rad.in*sin(ang),col=par("bg"),border=par("bg"))
}

x<-c(21,66,7,68,21)
names(x)<-c("FPÖ", "ÖVP", "BZÖ", "SPÖ", "Grüne")

png(filename="Mandate2006.png", width=1300, height=850, pointsize=12)
par(bg="whitesmoke")
parliament(x, col=c("#126ca8", "black", "#ec921a", "red", "#61bb46"), main="Nationalratswahl 2006 - Mandatsverteilung", cex.main=1.7)
dev.off()

 

This chart was created with R.