R version 2.8.1 (2008-12-22)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> y <- c(100.5,100.5,100.7,101.1,101.5,101.9,102.1,102.1,102.1,102.4,102.8,103.1,103.1,102.9,102.4,101.9,101.3,100.7,100.6,101,101.5,101.9,102.1,102.3,102.5,102.9,103.6,104.3,104.8,105.2,105.7,106.1,106.4,106.3,106.3,106.5,107.1,107.7,108.3,109,109.3,109.6,109.7,109.7,109.5,109.3,109,108.8,108.8,108.8,108.7,108.3,107.8,107.2,106.4,105.7,105.3,105,104.6,104,103,101.6,100.2,99,98.1,97.4,96.9,96.3,95.9,95.7,95.5,95.3)
> x <- c(99,98.6,98.6,98.5,98.9,99.4,99.8,99.9,100,100.1,100.1,100.2,100.3,100,99.9,99.4,99.8,99.6,100,99.9,100.3,100.6,100.7,100.8,100.8,100.6,101.1,101.1,100.9,101.1,101.2,101.4,101.9,102.1,102.1,103,103.4,103.2,103.1,103,103.7,103.4,103.5,103.8,104,104.2,104.4,104.4,104.9,105.3,105.2,105.4,105.4,105.5,105.7,105.6,105.8,105.4,105.5,105.8,106.1,106,105.5,105.4,106,106.1,106.4,106,106,106,106,106.1,106.1)
> par5 = 'iprod'
> par4 = 'afzetprijs'
> par3 = 'TRUE'
> par2 = 'blue'
> par1 = 'red'
> ylab = 'indexwaarde'
> 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))
Warning message:
In cbind(x, y) :
  number of rows of result is not a multiple of vector length (arg 2)
> names(z) <- list(par4,par5)
> postscript(file="/var/www/rcomp/tmp/1ld921257594710.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/1ld921257594710.ps tmp/1ld921257594710.png")
> 
> 
> proc.time()
   user  system elapsed 
   0.64    0.27    0.83