R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(91.46,90.24,93.90,96.34,93.90,86.59,75.61,70.73,74.39,84.15,89.02,87.80,74.39,70.73,74.39,78.05,82.93,82.93,79.27,75.61,76.83,78.05,80.49,81.71,78.05,82.93,85.37,84.15,86.59,87.80,86.59,85.37,84.15,81.71,80.49,84.15,89.02,96.34,100.00,100.00,100.00,98.78,96.34,93.90,93.90,92.68,91.46,91.46,86.59,91.46,91.46,95.12,95.12,95.12,92.68,91.46,93.90,98.78,97.56,92.68,80.49,79.27,82.93,91.46,97.56,100.00,98.78,96.34,96.34,92.68,91.46,92.68,89.02,91.46,92.68,91.46,92.68,95.12,96.34,95.12,91.46,80.49,76.83,76.83,73.17,76.83,78.05,76.83,76.83,78.05,81.71,81.71,82.93,75.61,70.73,68.29,65.85,69.51,70.73,67.07,65.85,65.85,65.85,67.07,68.29,69.51,70.73,65.85,59.76,63.41,67.07,71.95,76.83,79.27,78.05,78.05,80.49,82.93,87.80)
> #'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/rcomp/tmp/1gpd61258139108.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/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/html/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/rcomp/tmp/2s1ko1258139108.tab") 
> 
> system("convert tmp/1gpd61258139108.ps tmp/1gpd61258139108.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.433   0.199   1.018