R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> y <- c(136.49,142.62,141.71,149.51,147.39,131.96,136.38,127.34,133.85,125.14,141.25,149.32,120.92,134.85,131.93,134.22,143.07,145.37,134.32,126.31,162.21,124.09,153.91,154.34,138.70,150.98,146.39,178.30,168.23,162.52,158.86,152.17,171.01,171.49,189.62,177.46,179.98,156.96,167.89,194.78,192.78,165.06,196.60,151.64,187.02,210.99,219.08,235.68,241.44,187.46,229.57,208.44,215.09,217.00,171.08,178.41,196.34,172.11,154.93,182.26,181.74)
> x <- c(114.08,112.95,135.31,134.31,133.03,140.11,124.69,131.68,150.95,137.26,130.51,143.15,118.01,122.56,147.97,135.74,151.62,154.82,145.59,147.12,175.86,140.66,152.69,154.38,132.45,136.44,153.24,154.11,155.93,142.53,148.73,147.73,166.79,144.30,156.07,161.70,152.10,140.45,155.56,174.53,167.16,159.48,173.22,176.13,180.31,185.84,169.43,195.25,174.99,156.42,182.08,182.00,153.28,136.72,130.19,132.04,143.89,133.38,127.98,150.45,133.55)
> par5 = 'index Belgische invoer uit Amerika (mlj €)'
> par4 = 'index Belgische invoer uit EU (mlj €)'
> 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)
Loading required package: survival
Loading required package: splines

Attaching package: 'Hmisc'


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

	 untangle.specials 


	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/rcomp/tmp/1agd11258727201.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/1agd11258727201.ps tmp/1agd11258727201.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.598   0.174   0.742