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(154.783,187.646,237.863,215.54,231.745,199.548,164.147,159.388,203.514,224.901,211.539,211.16,181.712,203.908,240.774,232.819,255.221,246.7,206.263,211.679,236.601,237.43,233.767,219.52,222.625,216.238,248.587,221.376,242.453,246.539,189.351,185.956,213.175,228.732,212.93,218.254,227.103,219.026,264.529,262.057,258.779,231.928,211.167,205.439,224.883,228.624,209.435,215.607,287.356,306.015,338.546,344.16,328.412,342.006,277.668,290.477,314.967,324.627,290.646,315.033)
> x <- c(299.63,305.945,382.252,348.846,335.367,373.617,312.612,312.232,337.161,331.476,350.103,345.127,297.256,295.979,361.007,321.803,354.937,349.432,290.979,349.576,327.625,349.377,336.777,339.134,323.321,318.86,373.583,333.03,408.556,414.646,291.514,348.857,349.368,375.765,364.136,349.53,348.167,332.856,360.551,346.969,392.815,372.02,371.027,342.672,367.343,390.786,343.785,362.6,349.468,340.624,369.536,407.782,392.239,404.824,373.669,344.902,396.7,398.911,366.009,392.484)
> par5 = 'Metalen prod'
> par4 = 'Totaal'
> 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: Wessa P., (2007), Back to Back Histogram (v1.0.2) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_backtobackhist.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #Technical description: Write here your technical program description
> 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/1e8y71224513869.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/1e8y71224513869.ps tmp/1e8y71224513869.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.941   0.180   1.016