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(1529,2186,3069,3252,3541,3435,2320,3285,2681,3019,3833,3472,2971,2770,3060,4124,3282,3772,1500,2844,3449,4356,3150,2425,1212,1328,2097,2167,2773,2368,1387,2478,2702,3349,3114,3394,1249,2155,2188,2363,2040,2144,1440,2485,2904,2452,2855,3966,1621,1717,2370,1849,2262,2494,2010,1901,2027,1769,1271,1571)
> x <- c(2490,3266,3475,3127,2955,3870,2852,3142,3029,3180,2560,2733,2452,2553,2777,2520,2318,2873,2311,2395,2099,2268,2316,2181,2175,2627,2578,3090,2634,3225,2938,3174,3350,2588,2061,2691,2061,2918,2223,2651,2379,3146,2883,2768,3258,2839,2470,5072,1463,1600,2203,2013,2169,2640,2411,2528,2292,1988,1774,2279)
> par5 = 'Gereg. begonnen woongeb.'
> par4 = 'Bouwverg. woongeb.'
> 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/1m1sm1229252344.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/1m1sm1229252344.ps tmp/1m1sm1229252344.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.750   0.256   1.809