R version 2.7.1 (2008-06-23)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(18.33,18.22,18.21,18.06,18.26,18.21,18.05,18.25,18.27,18.28,18.13,18.01,18.02,17.97,18.06,18.08,18.23,18.06,18.23,18.17,18.27,18.33,18.18,18.29,18.33,18.31,18.44,18.63,18.37,18.59,18.72,18.75,18.87,18.83,18.89,18.78,19.27,19.19,19.43,19.36,19.39,19.07,19.31,19.19,19.06,19.05,19.49,19.25,19.76,20.35,19.61,19.33,18.95,18.97,19.28,19.41,18.99,19.37,19.63,19.53,19.86,20.13,19.47,19.49,18.95,19.33,19.65,19.44,19.73,18.89,19.56,19.56)
> par4 = 'Unknown'
> par3 = 'FALSE'
> par2 = 'grey'
> par1 = '20'
> xlab = 'x'
> main = '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!)
> par1 <- as.numeric(par1)
> if (par3 == 'TRUE') par3 <- TRUE
> if (par3 == 'FALSE') par3 <- FALSE
> if (par4 == 'Unknown') par1 <- as.numeric(par1)
> if (par4 == 'Interval/Ratio') par1 <- as.numeric(par1)
> if (par4 == '3-point Likert') par1 <- c(1:3 - 0.5, 3.5)
> if (par4 == '4-point Likert') par1 <- c(1:4 - 0.5, 4.5)
> if (par4 == '5-point Likert') par1 <- c(1:5 - 0.5, 5.5)
> if (par4 == '6-point Likert') par1 <- c(1:6 - 0.5, 6.5)
> if (par4 == '7-point Likert') par1 <- c(1:7 - 0.5, 7.5)
> if (par4 == '8-point Likert') par1 <- c(1:8 - 0.5, 8.5)
> if (par4 == '9-point Likert') par1 <- c(1:9 - 0.5, 9.5)
> if (par4 == '10-point Likert') par1 <- c(1:10 - 0.5, 10.5)
> postscript(file="/var/www/html/rcomp/tmp/1owqa1222975760.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> if (is.na(par1)) {
+ myhist<-hist(x,col=par2,main=main,xlab=xlab,right=par3)
+ } else {
+ if (par1 < 0) par1 <- 3
+ if (par1 > 50) par1 <- 50
+ myhist<-hist(x,breaks=par1,col=par2,main=main,xlab=xlab,right=par3)
+ }
> dev.off()
null device 
          1 
> myhist
$breaks
 [1] 17.9 18.0 18.1 18.2 18.3 18.4 18.5 18.6 18.7 18.8 18.9 19.0 19.1 19.2 19.3
[16] 19.4 19.5 19.6 19.7 19.8 19.9 20.0 20.1 20.2 20.3 20.4

$counts
 [1]  1  7  3 11  5  1  1  1  3  4  4  3  2  3  6  6  3  3  2  1  0  0  1  0  1

$intensities
 [1] 0.1388889 0.9722222 0.4166667 1.5277778 0.6944444 0.1388889 0.1388889
 [8] 0.1388889 0.4166667 0.5555556 0.5555556 0.4166667 0.2777778 0.4166667
[15] 0.8333333 0.8333333 0.4166667 0.4166667 0.2777778 0.1388889 0.0000000
[22] 0.0000000 0.1388889 0.0000000 0.1388889

$density
 [1] 0.1388889 0.9722222 0.4166667 1.5277778 0.6944444 0.1388889 0.1388889
 [8] 0.1388889 0.4166667 0.5555556 0.5555556 0.4166667 0.2777778 0.4166667
[15] 0.8333333 0.8333333 0.4166667 0.4166667 0.2777778 0.1388889 0.0000000
[22] 0.0000000 0.1388889 0.0000000 0.1388889

$mids
 [1] 17.95 18.05 18.15 18.25 18.35 18.45 18.55 18.65 18.75 18.85 18.95 19.05
[13] 19.15 19.25 19.35 19.45 19.55 19.65 19.75 19.85 19.95 20.05 20.15 20.25
[25] 20.35

$xname
[1] "x"

$equidist
[1] TRUE

attr(,"class")
[1] "histogram"
> n <- length(x)
> 
> #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,hyperlink('http://www.xycoon.com/histogram.htm','Frequency Table (Histogram)',''),6,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Bins',header=TRUE)
> a<-table.element(a,'Midpoint',header=TRUE)
> a<-table.element(a,'Abs. Frequency',header=TRUE)
> a<-table.element(a,'Rel. Frequency',header=TRUE)
> a<-table.element(a,'Cumul. Rel. Freq.',header=TRUE)
> a<-table.element(a,'Density',header=TRUE)
> a<-table.row.end(a)
> crf <- 0
> if (par3 == FALSE) mybracket <- '[' else mybracket <- ']'
> mynumrows <- (length(myhist$breaks)-1)
> for (i in 1:mynumrows) {
+ a<-table.row.start(a)
+ if (i == 1)
+ dum <- paste('[',myhist$breaks[i],sep='')
+ else
+ dum <- paste(mybracket,myhist$breaks[i],sep='')
+ dum <- paste(dum,myhist$breaks[i+1],sep=',')
+ if (i==mynumrows)
+ dum <- paste(dum,']',sep='')
+ else
+ dum <- paste(dum,mybracket,sep='')
+ a<-table.element(a,dum,header=TRUE)
+ a<-table.element(a,myhist$mids[i])
+ a<-table.element(a,myhist$counts[i])
+ rf <- myhist$counts[i]/n
+ crf <- crf + rf
+ a<-table.element(a,round(rf,6))
+ a<-table.element(a,round(crf,6))
+ a<-table.element(a,round(myhist$density[i],6))
+ a<-table.row.end(a)
+ }
> a<-table.end(a)
> table.save(a,file="/var/www/html/rcomp/tmp/2ky0s1222975760.tab") 
> 
> system("convert tmp/1owqa1222975760.ps tmp/1owqa1222975760.png")
> 
> 
> proc.time()
   user  system elapsed 
  0.587   0.158   0.671