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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> x <- c(109.20,88.60,94.30,98.30,86.40,80.60,104.10,108.20,93.40,71.90,94.10,94.90,96.40,91.10,84.40,86.40,88.00,75.10,109.70,103.00,82.10,68.00,96.40,94.30,90.00,88.00,76.10,82.50,81.40,66.50,97.20,94.10,80.70,70.50,87.80,89.50,99.60,84.20,75.10,92.00,80.80,73.10,99.80,90.00,83.10,72.40,78.80,87.30,91.00,80.10,73.60,86.40,74.50,71.20,92.40,81.50,85.30,69.90,84.20,90.70,100.30)
> par1 = '20'
> #'GNU S' R Code compiled by R2WASP v. 1.0.44 ()
> #Author: Prof. Dr. P. Wessa
> #To cite this work: Wessa P., (2007), Mean Plot (v1.0.1) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_meanplot.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #Technical description: Write here your technical program description
> par1 <- as.numeric(par1)
> (n <- length(x))
[1] 61
> (np <- floor(n / par1))
[1] 3
> arr <- array(NA,dim=c(par1,np+1))
> ari <- array(0,dim=par1)
> j <- 0
> for (i in 1:n)
+ {
+ j = j + 1
+ ari[j] = ari[j] + 1
+ arr[j,ari[j]] <- x[i]
+ if (j == par1) j = 0
+ }
> ari
 [1] 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
> arr
       [,1] [,2] [,3]  [,4]
 [1,] 109.2 82.1 80.8 100.3
 [2,]  88.6 68.0 73.1    NA
 [3,]  94.3 96.4 99.8    NA
 [4,]  98.3 94.3 90.0    NA
 [5,]  86.4 90.0 83.1    NA
 [6,]  80.6 88.0 72.4    NA
 [7,] 104.1 76.1 78.8    NA
 [8,] 108.2 82.5 87.3    NA
 [9,]  93.4 81.4 91.0    NA
[10,]  71.9 66.5 80.1    NA
[11,]  94.1 97.2 73.6    NA
[12,]  94.9 94.1 86.4    NA
[13,]  96.4 80.7 74.5    NA
[14,]  91.1 70.5 71.2    NA
[15,]  84.4 87.8 92.4    NA
[16,]  86.4 89.5 81.5    NA
[17,]  88.0 99.6 85.3    NA
[18,]  75.1 84.2 69.9    NA
[19,] 109.7 75.1 84.2    NA
[20,] 103.0 92.0 90.7    NA
> arr.mean <- array(NA,dim=par1)
> arr.median <- array(NA,dim=par1)
> arr.midrange <- array(NA,dim=par1)
> for (j in 1:par1)
+ {
+ arr.mean[j] <- mean(arr[j,],na.rm=TRUE)
+ arr.median[j] <- median(arr[j,],na.rm=TRUE)
+ arr.midrange[j] <- (quantile(arr[j,],0.75,na.rm=TRUE) + quantile(arr[j,],0.25,na.rm=TRUE)) / 2
+ }
> overall.mean <- mean(x)
> overall.median <- median(x)
> overall.midrange <- (quantile(x,0.75) + quantile(x,0.25)) / 2
> postscript(file="/var/www/html/rcomp/tmp/1g75z1225447247.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.mean,type='b',ylab='mean',main='Mean Plot',xlab='Periodic Index')
> mtext(paste('#blocks = ',np))
> abline(overall.mean,0)
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/2hvdj1225447247.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.median,type='b',ylab='median',main='Median Plot',xlab='Periodic Index')
> mtext(paste('#blocks = ',np))
> abline(overall.median,0)
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/38cr01225447247.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.midrange,type='b',ylab='midrange',main='Midrange Plot',xlab='Periodic Index')
> mtext(paste('#blocks = ',np))
> abline(overall.midrange,0)
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/4o00e1225447247.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(t(arr))
> names(z) <- c(1:par1)
> (boxplot(z,notch=TRUE,col='grey',xlab='Periodic Index',ylab='Value',main='Notched Box Plots - Periodic Subseries'))
$stats
       [,1]  [,2]  [,3]  [,4]  [,5] [,6]   [,7]   [,8] [,9] [,10] [,11] [,12]
[1,]  80.80 68.00 94.30 90.00 83.10 72.4  76.10  82.50 81.4  66.5 73.60 86.40
[2,]  81.45 70.55 95.35 92.15 84.75 76.5  77.45  84.90 86.2  69.2 83.85 90.25
[3,]  91.20 73.10 96.40 94.30 86.40 80.6  78.80  87.30 91.0  71.9 94.10 94.10
[4,] 104.75 80.85 98.10 96.30 88.20 84.3  91.45  97.75 92.2  76.0 95.65 94.50
[5,] 109.20 88.60 99.80 98.30 90.00 88.0 104.10 108.20 93.4  80.1 97.20 94.90
     [,13] [,14] [,15] [,16] [,17] [,18]  [,19]  [,20]
[1,] 74.50 70.50  84.4 81.50 85.30 69.90  75.10  90.70
[2,] 77.60 70.85  86.1 83.95 86.65 72.50  79.65  91.35
[3,] 80.70 71.20  87.8 86.40 88.00 75.10  84.20  92.00
[4,] 88.55 81.15  90.1 87.95 93.80 79.65  96.95  97.50
[5,] 96.40 91.10  92.4 89.50 99.60 84.20 109.70 103.00

$n
 [1] 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

$conf
        [,1]    [,2]     [,3]     [,4]     [,5]     [,6]     [,7]     [,8]
[1,]  72.793 63.7042 93.89141 90.51431 83.25286 73.48474 66.02901 75.57806
[2,] 109.607 82.4958 98.90859 98.08569 89.54714 87.71526 91.57099 99.02194
         [,9]    [,10]     [,11]   [,12]    [,13]   [,14]    [,15]    [,16]
[1,] 85.52672 65.69695  83.33588 90.2231 70.71126 61.8042 84.15115 82.75115
[2,] 96.47328 78.10305 104.86412 97.9769 90.68874 80.5958 91.44885 90.04885
        [,17]    [,18]    [,19]    [,20]
[1,] 81.47767 68.57767 68.41871 86.38989
[2,] 94.52233 81.62233 99.98129 97.61011

$out
numeric(0)

$group
numeric(0)

$names
 [1] "1"  "2"  "3"  "4"  "5"  "6"  "7"  "8"  "9"  "10" "11" "12" "13" "14" "15"
[16] "16" "17" "18" "19" "20"

Warning message:
In bxp(list(stats = c(80.8, 81.45, 91.2, 104.75, 109.2, 68, 70.55,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/5lhzc1225447247.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(arr)
> names(z) <- c(1:np)
> (boxplot(z,notch=TRUE,col='grey',xlab='Block Index',ylab='Value',main='Notched Box Plots - Sequential Blocks'))
$stats
       [,1]  [,2]  [,3]  [,4]
[1,]  71.90 66.50 69.90 100.3
[2,]  86.40 78.40 74.05 100.3
[3,]  93.75 86.00 82.30 100.3
[4,] 100.65 93.05 88.65 100.3
[5,] 109.70 99.60 99.80 100.3

$n
[1] 20 20 20  1

$conf
        [,1]     [,2]     [,3]  [,4]
[1,] 88.7155 80.82417 77.14184 100.3
[2,] 98.7845 91.17583 87.45816 100.3

$out
numeric(0)

$group
numeric(0)

$names
[1] "1" "2" "3" NA 

> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/6hono1225447247.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(cbind(arr.mean,arr.median,arr.midrange))
> names(z) <- list('mean','median','midrange')
> (boxplot(z,notch=TRUE,col='grey',ylab='Overall Central Tendency',main='Notched Box Plots'))
$stats
         [,1]  [,2]    [,3]
[1,] 72.83333 71.20 72.6000
[2,] 82.10000 79.70 81.7375
[3,] 88.25000 86.85 88.2000
[4,] 92.23333 91.60 91.7375
[5,] 96.83333 96.40 96.7250

$n
[1] 20 20 20

$conf
        [,1]     [,2]     [,3]
[1,] 84.6699 82.64574 84.66701
[2,] 91.8301 91.05426 91.73299

$out
numeric(0)

$group
numeric(0)

$names
[1] "mean"     "median"   "midrange"

> dev.off()
null device 
          1 
> 
> system("convert tmp/1g75z1225447247.ps tmp/1g75z1225447247.png")
> system("convert tmp/2hvdj1225447247.ps tmp/2hvdj1225447247.png")
> system("convert tmp/38cr01225447247.ps tmp/38cr01225447247.png")
> system("convert tmp/4o00e1225447247.ps tmp/4o00e1225447247.png")
> system("convert tmp/5lhzc1225447247.ps tmp/5lhzc1225447247.png")
> system("convert tmp/6hono1225447247.ps tmp/6hono1225447247.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.316   0.846   1.771