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(820,829,677,720,846,842,1137,961,1008,872,1094,905,622,1068,760,809,838,1008,838,1057,904,803,810,992,667,803,611,712,785,599,1008,1136,931,1051,956,1006,1077,772,679,787,1011,701,1269,1007,1013,1209,1036,1084,926,1083,912,910,886,948,1134,1226,1515,1491,1086,1274,1164,1205,966,1462,1134,1141,1676,1166,1492,1413,1287,1206,1054,1236,1069,1264,1318,1093,1495,1121,1342,1335,1261,1317,867,1428,1199,961,1195,1225,1282,1629,1187)
> x <- c(3353,3480,3098,2944,3389,3497,4404,3849,3734,3060,3507,3287,3215,3764,2734,2837,2766,3851,3289,3848,3348,3682,4058,3655,3811,3341,3032,3475,3353,3186,3902,4164,3499,4145,3796,3711,3949,3740,3243,4407,4814,3908,5250,3937,4004,5560,3922,3759,4138,4634,3996,4308,4142,4429,5219,4929,5754,5592,4163,4962,5208,4755,4491,5732,5730,5024,6056,4901,5353,5578,4618,4724,5011,5298,4143,4617,4727,4207,5112,4190,4098,5071,4177,4598,3757,5591,4218,3780,4336,4870,4422,4727,4459)
> par5 = 'Bouwvergunningen Wallonie'
> par4 = 'Bouwvergunningen Belgie'
> par3 = 'TRUE'
> par2 = 'grey'
> par1 = 'blue'
> 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/1afpx1224253508.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/1afpx1224253508.ps tmp/1afpx1224253508.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.992   0.191   1.114