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(301.606,268.225,362.082,310.984,350.907,365.759,357.504,432.236,394.335,404.182,371.721,387.012,280.042,357.111,359.451,341.206,349.156,430.298,354.447,400.785,358.974,352.853,374.229,364.568,352.411,376.47,357.475,299.497,361.805,343.188,335.597,330.985,336.723,348.076,317.518,345.737,342.568,352.951,400.269,428.121,475.804,392.732,388.22,410.643,428.044,530.799,463.074,477.686,440.586,424.757,511.061,511.421,454.39,498.403,516.143,463.642,498.391,533.752,404.341,435.645)
> 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 = 'Mach & App.'
> par4 = 'Total'
> 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/freestat/rcomp/tmp/1c3t21224514250.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/1c3t21224514250.ps tmp/1c3t21224514250.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.211   0.217   1.254