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(4.5,4.7,4.75,4.75,4.75,4.75,4.75,4.75,4.58,4.5,4.5,4.49,4.03,3.75,3.39,3.25,3.25,3.25,3.25,3.25,3.25,3.25,3.25,3.25,3.25,3.25,3.25,2.85,2.75,2.75,2.55,2.5,2.5,2.1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2.21,2.25,2.25,2.45,2.5,2.5,2.64,2.75,2.93,3,3.17,3.25,3.39,3.5,3.5,3.65,3.75,3.75,3.9,4,4,4,4,4,4,4,4,4,4,4,4,4.18,4.25,4.25)
> x <- c(1045.9,1401.9,1027.6,1703.8,1481.3,1422.7,1304.7,1246.1,1417.8,1459.1,1156.4,1304.5,1336.9,1372.3,975.5,1180.8,1361.3,1428.1,1355.9,1781.2,1697,1852,1844.1,1967.2,1747.1,1863.9,1559.3,1675,2237.5,1965.2,1871.5,1752.2,1360.7,1444.3,1621.6,1368,1553.9,1695.3,1397.1,1848.4,1809.2,1551.1,1546.6,1467.9,1662.4,1972.3,1673.5,1762,2019.8,1754.3,1400.4,1453.6,1740.9,1694.6,1541.2,1482.3,1632.1,1837.3,1797,2066.2,1983.8,1601.7,1660.3,1954,1991.9,1881.4,2345.5,1773.1,1719.2,2240.9,1816.4,2171.3,1823.3,2022.5,1991,1920,2168.4,2013.5,1790.8,1855.7,2074,2535.8,1837.2,1805.1,1785.7,2250,1959.7,1890.8,2405.7,2090.3,1666.5,1803.5,1793.8,1488.8,1545,1369.9,1451.6)
> par5 = 'Rentevoet'
> par4 = 'Uitvoer naar Amerika'
> 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/1w0d41224524796.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/1w0d41224524796.ps tmp/1w0d41224524796.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.918   0.172   0.996