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(310301,308956,306337,300552,309661,315575,265784,260722,278629,311448,363932,362673,320253,273036,291047,239167,285034,331389,228493,205450,207203,287602,265812,262920,268006,292400,315810,269544,301433,280678,221915,263552,244831,245227,302493,280810,277643,292792,318530,276807,284524,290486,259355,383556,350488,318029,377740,293546,317460,401629,282854,275316,304680,349947,266543,329195,314626,338463,399338,339542,454688,396766,309465,365707,383677,352609,340011,425915,498938,391142,418962,342378,369674,391250,310589,335910,344448,361944,290274,327902,329809,324543,350735,320091,278048,381754,301833,318723,266695,381119,295943,266463,311750,359897,312936,339327,312658)
> x <- c(2319,2383,2513,2553,2341,2540,2371,2122,2301,2512,3145,2741,2548,1987,2281,2016,2434,2637,1831,1851,1839,2609,2417,2394,2372,2717,2998,2538,3007,2475,2175,2465,2279,2323,2746,2601,2486,2718,2646,2551,2712,2606,2365,3533,3509,2912,3599,2719,2869,4085,2686,2545,3071,3388,2652,3190,2884,3295,3818,3226,3953,3810,2877,3515,3708,3450,3360,4110,4384,3729,4263,3505,3674,3911,2951,3317,3417,3498,2768,2899,3171,3004,3481,3016,2595,3509,2833,3125,2556,3628,2876,2575,2903,3438,2926,3068,3015)
> par5 = 'totale bewoonbare oppervlakte'
> par4 = 'aantal woningen'
> 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/1mmr51224527214.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/1mmr51224527214.ps tmp/1mmr51224527214.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.730   0.259   1.801