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(7.40,7.10,6.80,6.90,7.20,7.40,7.30,6.90,6.90,6.80,7.10,7.20,7.10,7.00,6.90,7.10,7.30,7.50,7.50,7.50,7.30,7.00,6.70,6.50,6.50,6.50,6.60,6.80,6.90,6.90,6.80,6.80,6.50,6.10,6.10,5.90,5.70,5.90,5.90,6.10,6.30,6.20,5.90,5.70,5.40,5.60,6.20,6.30,6.00,5.60,5.50,5.90,6.50,6.80,6.80,6.50,6.20,6.20,6.50,6.70)
> x <- c(25.60,23.70,22.00,21.30,20.70,20.40,20.30,20.40,19.80,19.50,23.10,23.50,23.50,22.90,21.90,21.50,20.50,20.20,19.40,19.20,18.80,18.80,22.60,23.30,23.00,21.40,19.90,18.80,18.60,18.40,18.60,19.90,19.20,18.40,21.10,20.50,19.10,18.10,17.00,17.10,17.40,16.80,15.30,14.30,13.40,15.30,22.10,23.70,22.20,19.50,16.60,17.30,19.80,21.20,21.50,20.60,19.10,19.60,23.50,24.00)
> par5 = 'wkz>25'
> par4 = 'wkz<25'
> par3 = 'TRUE'
> par2 = 'blue'
> par1 = 'red'
> 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/rcomp/tmp/1u5o81257505959.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/1u5o81257505959.ps tmp/1u5o81257505959.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.600   0.200   0.781