R version 2.7.2 (2008-08-25)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> y <- c(100.3,97.6,89.1,99.1,94.9,96.5,92.6,80.8,89.5,101.4,95.9,92.3,91.2,88.3,80.7,89.9,87.2,86.9,82.8,72.6,81.3,91.2,87.3,83.4,81.7,80.2,74.1,80.6,79.0,79.3,71.2,78.1,68.2,81.0,106.9,123.7,73.7,69.2,72.5,75.7,73.5,70.4,65.7,68.1,62.4,64.7,77.7,85.9,61.0,57.4,75.1,75.9,71.8,72.3,67.3,71.5,67.6,74.2,77.6,76.4,74.2)
> x <- c(116.1,102.5,102.0,101.3,100.6,100.9,104.2,108.3,108.9,109.9,106.8,112.7,113.4,101.3,97.8,95.0,93.8,94.5,101.4,105.8,106.6,109.7,108.8,113.4,113.7,103.6,98.2,95.5,94.4,95.9,103.2,104.1,127.6,130.3,133.0,140.4,123.5,116.9,115.9,113.1,112.1,112.4,118.9,117.4,115.6,120.7,114.9,122.0,119.6,114.6,118.4,110.9,111.6,114.6,112.1,117.4,114.8,123.4,118.1,121.9,123.3)
> par5 = 'Energie Brussel'
> par4 = 'Energie België'
> 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/rcomp/tmp/17fsg1224537413.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/17fsg1224537413.ps tmp/17fsg1224537413.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.923   0.172   1.014