R version 2.7.0 (2008-04-22)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> y <- c(0.8721,0.8552,0.8564,0.8973,0.9383,0.9217,0.9095,0.892,0.8742,0.8532,0.8607,0.9005,0.9111,0.9059,0.8883,0.8924,0.8833,0.87,0.8758,0.8858,0.917,0.9554,0.9922,0.9778,0.9808,0.9811,1.0014,1.0183,1.0622,1.0773,1.0807,1.0848,1.1582,1.1663,1.1372,1.1139,1.1222,1.1692,1.1702,1.2286,1.2613,1.2646,1.2262,1.1985,1.2007,1.2138,1.2266,1.2176,1.2218,1.249,1.2991,1.3408,1.3119,1.3014,1.3201,1.2938,1.2694,1.2165,1.2037,1.2292,1.2256,1.2015,1.1786,1.1856,1.2103,1.1938,1.202,1.2271,1.277,1.265,1.2684,1.2811,1.2727,1.2611,1.2881,1.3213,1.2999,1.3074,1.3242,1.3516,1.3511,1.3419,1.3716,1.3622,1.3896,1.4227,1.4684,1.457,1.4718,1.4748,1.5527,1.575,1.5557,1.5553,1.577,1.4975,1.4369)
> 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 = 'Wisselkoers dollar/euro'
> 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/1t1eb1224524456.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/1t1eb1224524456.ps tmp/1t1eb1224524456.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.735   0.248   1.798