R version 2.8.0 (2008-10-20)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> y <- c(95.40,99.31,101.80,100.53,102.28,101.89,98.08,98.98,100.02,100.58,100.67,100.46,98.47,102.01,103.28,103.70,104.64,106.31,107.16,108.10,104.90,105.27,107.37,110.01,114.11,116.22,118.06,119.35,120.48,117.02,121.66,127.88,128.58,130.42,126.28,129.31,132.59,125.91,127.88,119.59,118.46,116.31,120.72,122.21,115.00,107.99,109.98,106.01,87.58,82.17,81.99,80.08,73.35,69.01,76.23,80.10,81.96,82.79,89.42,91.90)
> x <- c(90.21,93.24,95.60,97.58,100.81,101.65,102.08,100.18,101.36,103.46,106.59,107.24,107.84,110.08,114.34,120.00,124.78,128.21,127.48,124.39,116.83,121.13,126.39,129.92,135.43,137.43,140.42,145.42,147.35,142.58,150.25,153.71,151.23,149.32,137.53,140.60,145.14,134.34,134.72,125.81,121.77,120.24,126.24,124.39,114.68,99.24,99.71,96.94,71.92,65.92,60.96,62.35,59.26,54.65,61.01,67.15,66.42,67.77,75.05,79.95)
> par5 = 'Dow Jones'
> par4 = 'Bel20'
> par3 = 'TRUE'
> par2 = 'grey'
> par1 = 'grey'
> ylab = ''
> main = 'Back to Back Histogram'
> #'GNU S' R Code compiled by R2WASP v. 1.0.44 ()
> #Author: Prof. Dr. P. Wessa
> #To cite this work: AUTHOR(S), (YEAR), YOUR SOFTWARE TITLE (vNUMBER) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_YOURPAGE.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #Technical description: Write here your technical program description (don't use hard returns!)
> if (par3 == 'TRUE') par3 <- TRUE
> if (par3 == 'FALSE') par3 <- FALSE
> library(Hmisc)

Attaching package: 'Hmisc'


	The following object(s) are masked from package:base :

	 format.pval,
	 round.POSIXt,
	 trunc.POSIXt,
	 units 

> z <- data.frame(cbind(x,y))
> names(z) <- list(par4,par5)
> postscript(file="/var/www/html/freestat/rcomp/tmp/1i6a51257688111.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> out <- histbackback(z, probability=par3, main = main, ylab = ylab)
> barplot(-out$left, col=par1, horiz=TRUE, space=0, add=TRUE, axes=FALSE)
> barplot(out$right, col=par2, horiz=TRUE, space=0, add=TRUE, axes=FALSE)
> dev.off()
null device 
          1 
> 
> system("convert tmp/1i6a51257688111.ps tmp/1i6a51257688111.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.029   0.227   1.106