R version 2.8.0 (2008-10-20)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(124.06,124.58,122.00,124.02,124.16,124.29,123.93,124.62,121.81,124.14,124.31,125.15,125.35,125.48,124.17,125.33,124.46,123.39,123.14,122.24,119.31,120.87,120.43,119.41,118.85,119.08,117.25,118.51,118.42,118.56,117.97,117.98,115.25,117.23,117.08,116.83,117.17,117.73,115.74,116.99,116.90,116.49,115.84,115.92,113.32,114.84,114.75,114.84,115.03,115.03,112.99,114.15,113.77,113.57,113.38,112.71,110.27,111.73,112.12,112.31,111.73,111.83,109.99,111.15,111.25,110.87,110.27,110.18,108.15,109.60,109.60,109.41,109.80,109.60,107.76,109.02,108.62,109.02,109.22,108.92,106.69,107.76,107.66,107.85,107.95,107.85,106.30,107.37,107.66,107.46,107.37,107.18,105.43,106.39,106.50,106.50,106.69,106.50,105.14,106.50,106.20,105.72,104.76,104.55,102.71,104.36,104.65,104.46,104.65,103.88,102.32,103.39,103.00,102.71,102.51,102.04,100.00)
> #'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!)
> gp <- function(lambda, p)
+ {
+ (p^lambda-(1-p)^lambda)/lambda
+ }
> sortx <- sort(x)
> c <- array(NA,dim=c(201))
> for (i in 1:201)
+ {
+ if (i != 101) c[i] <- cor(gp(ppoints(x), lambda=(i-101)/100),sortx)
+ }
> postscript(file="/var/www/html/freestat/rcomp/tmp/1wcv21257771209.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot((-100:100)/100,c[1:201],xlab='lambda',ylab='correlation',main='PPCC Plot - Tukey lambda')
> grid()
> dev.off()
null device 
          1 
> 
> #Note: the /var/www/html/freestat/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/html/freestat/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'Tukey Lambda - Key Values',2,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Distribution (lambda)',1,TRUE)
> a<-table.element(a,'Correlation',1,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Approx. Cauchy (lambda=-1)',header=TRUE)
> a<-table.element(a,c[1])
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Exact Logistic (lambda=0)',header=TRUE)
> a<-table.element(a,(c[100]+c[102])/2)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Approx. Normal (lambda=0.14)',header=TRUE)
> a<-table.element(a,c[115])
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'U-shaped (lambda=0.5)',header=TRUE)
> a<-table.element(a,c[151])
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Exactly Uniform (lambda=1)',header=TRUE)
> a<-table.element(a,c[201])
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/www/html/freestat/rcomp/tmp/2iu211257771209.tab") 
> 
> system("convert tmp/1wcv21257771209.ps tmp/1wcv21257771209.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.675   0.291   0.740