R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(8.93,8.96,9.21,9.08,9.11,9.12,9.2,9.43,9.64,9.72,9.72,9.62)
> par1 = '12'
> par1 <- '12'
> #'GNU S' R Code compiled by R2WASP v. 1.2.291 ()
> #Author: root
> #To cite this work: Wessa P., (2012), Mean Plot (v1.0.4) 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
> #
> par1 <- as.numeric(par1)
> (n <- length(x))
[1] 12
> (np <- floor(n / par1))
[1] 1
> arr <- array(NA,dim=c(par1,np+1))
> darr <- array(NA,dim=c(par1,np+1))
> ari <- array(0,dim=par1)
> dx <- diff(x)
> j <- 0
> for (i in 1:n)
+ {
+ j = j + 1
+ ari[j] = ari[j] + 1
+ arr[j,ari[j]] <- x[i]
+ darr[j,ari[j]] <- dx[i]
+ if (j == par1) j = 0
+ }
> ari
 [1] 1 1 1 1 1 1 1 1 1 1 1 1
> arr
      [,1] [,2]
 [1,] 8.93   NA
 [2,] 8.96   NA
 [3,] 9.21   NA
 [4,] 9.08   NA
 [5,] 9.11   NA
 [6,] 9.12   NA
 [7,] 9.20   NA
 [8,] 9.43   NA
 [9,] 9.64   NA
[10,] 9.72   NA
[11,] 9.72   NA
[12,] 9.62   NA
> darr
       [,1] [,2]
 [1,]  0.03   NA
 [2,]  0.25   NA
 [3,] -0.13   NA
 [4,]  0.03   NA
 [5,]  0.01   NA
 [6,]  0.08   NA
 [7,]  0.23   NA
 [8,]  0.21   NA
 [9,]  0.08   NA
[10,]  0.00   NA
[11,] -0.10   NA
[12,]    NA   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/wessaorg/rcomp/tmp/1k7wt1393884814.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/2i0m41393884814.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/3m05q1393884814.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/425951393884814.ps",horizontal=F,onefile=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,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62
[2,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62
[3,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62
[4,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62
[5,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62

$n
 [1] 1 1 1 1 1 1 1 1 1 1 1 1

$conf
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[1,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62
[2,] 8.93 8.96 9.21 9.08 9.11 9.12  9.2 9.43 9.64  9.72  9.72  9.62

$out
numeric(0)

$group
numeric(0)

$names
 [1] "1"  "2"  "3"  "4"  "5"  "6"  "7"  "8"  "9"  "10" "11" "12"

> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/5me8b1393884814.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(t(darr))
> names(z) <- c(1:par1)
> (boxplot(z,notch=TRUE,col='grey',xlab='Periodic Index',ylab='Value',main='Notched Box Plots - Differenced Periodic Subseries'))
$stats
     [,1] [,2]  [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[1,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA
[2,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA
[3,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA
[4,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA
[5,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA

$n
 [1] 1 1 1 1 1 1 1 1 1 1 1 0

$conf
     [,1] [,2]  [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[1,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA
[2,] 0.03 0.25 -0.13 0.03 0.01 0.08 0.23 0.21 0.08     0  -0.1    NA

$out
numeric(0)

$group
numeric(0)

$names
 [1] "1"  "2"  "3"  "4"  "5"  "6"  "7"  "8"  "9"  "10" "11" "12"

> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/6cqzj1393884814.ps",horizontal=F,onefile=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]
[1,] 8.930   NA
[2,] 9.095   NA
[3,] 9.205   NA
[4,] 9.630   NA
[5,] 9.720   NA

$n
[1] 12  0

$conf
         [,1] [,2]
[1,] 8.960983   NA
[2,] 9.449017   NA

$out
numeric(0)

$group
numeric(0)

$names
[1] "1" NA 

Warning message:
In bxp(list(stats = c(8.93, 9.095, 9.205, 9.63, 9.72, NA, NA, NA,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/752kr1393884814.ps",horizontal=F,onefile=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,] 8.930 8.930 8.930
[2,] 9.095 9.095 9.095
[3,] 9.205 9.205 9.205
[4,] 9.630 9.630 9.630
[5,] 9.720 9.720 9.720

$n
[1] 12 12 12

$conf
         [,1]     [,2]     [,3]
[1,] 8.960983 8.960983 8.960983
[2,] 9.449017 9.449017 9.449017

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(8.93, 9.095, 9.205, 9.63, 9.72, 8.93, 9.095,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> 
> try(system("convert tmp/1k7wt1393884814.ps tmp/1k7wt1393884814.png",intern=TRUE))
character(0)
> try(system("convert tmp/2i0m41393884814.ps tmp/2i0m41393884814.png",intern=TRUE))
character(0)
> try(system("convert tmp/3m05q1393884814.ps tmp/3m05q1393884814.png",intern=TRUE))
character(0)
> try(system("convert tmp/425951393884814.ps tmp/425951393884814.png",intern=TRUE))
character(0)
> try(system("convert tmp/5me8b1393884814.ps tmp/5me8b1393884814.png",intern=TRUE))
character(0)
> try(system("convert tmp/6cqzj1393884814.ps tmp/6cqzj1393884814.png",intern=TRUE))
character(0)
> try(system("convert tmp/752kr1393884814.ps tmp/752kr1393884814.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  4.872   1.035   5.937