R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(12.8,12.1,11.4,11.4,10.6,10.4,10.9,11.6,13.3,15.2,17.4,19.1,19.9,19.4,18.2,15.8,13.5,12.1,10.3,8.8,8.2,6.8,5.9,4.9,3.9,3.6,2.8,4,4.2,4.2,4.8,4,3.8,4,3.7,4,4.6,4.6,4.6,4.5,4.1,4.1,4.4,4.2,4.4,3.2,2.8,1.7,-0.2,-2.9,-5.2,-5.3,-4.8,-2.2,-0.8,-1.1,-1.5,-2,-2.8,-3.4,-4.1,-5.5,-8.6,-7.6,-8.6,-8.7,-4.6,-4.3,-1.5,1.2,1.8,0)
> par1 = '4'
> par1 <- '4'
> #'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] 72
> (np <- floor(n / par1))
[1] 18
> 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] 18 18 18 18
> arr
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14]
[1,] 12.8 10.6 13.3 19.9 13.5  8.2  3.9  4.2  3.8   4.6   4.1   4.4  -0.2  -4.8
[2,] 12.1 10.4 15.2 19.4 12.1  6.8  3.6  4.2  4.0   4.6   4.1   3.2  -2.9  -2.2
[3,] 11.4 10.9 17.4 18.2 10.3  5.9  2.8  4.8  3.7   4.6   4.4   2.8  -5.2  -0.8
[4,] 11.4 11.6 19.1 15.8  8.8  4.9  4.0  4.0  4.0   4.5   4.2   1.7  -5.3  -1.1
     [,15] [,16] [,17] [,18] [,19]
[1,]  -1.5  -4.1  -8.6  -1.5    NA
[2,]  -2.0  -5.5  -8.7   1.2    NA
[3,]  -2.8  -8.6  -4.6   1.8    NA
[4,]  -3.4  -7.6  -4.3   0.0    NA
> darr
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14]
[1,] -0.7 -0.2  1.9 -0.5 -1.4 -1.4 -0.3  0.0  0.2   0.0   0.0  -1.2  -2.7   2.6
[2,] -0.7  0.5  2.2 -1.2 -1.8 -0.9 -0.8  0.6 -0.3   0.0   0.3  -0.4  -2.3   1.4
[3,]  0.0  0.7  1.7 -2.4 -1.5 -1.0  1.2 -0.8  0.3  -0.1  -0.2  -1.1  -0.1  -0.3
[4,] -0.8  1.7  0.8 -2.3 -0.6 -1.0  0.2 -0.2  0.6  -0.4   0.2  -1.9   0.5  -0.4
     [,15] [,16] [,17] [,18] [,19]
[1,]  -0.5  -1.4  -0.1   2.7    NA
[2,]  -0.8  -3.1   4.1   0.6    NA
[3,]  -0.6   1.0   0.3  -1.8    NA
[4,]  -0.7  -1.0   2.8    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/10ixs1424975097.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/2eazj1424975097.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/31bip1424975097.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/4xvq61424975097.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]
[1,] -8.60 -8.70 -8.60 -7.6
[2,] -1.50 -2.00 -0.80 -1.1
[3,]  4.15  4.05  4.05  4.0
[4,] 10.60 10.40 10.30  8.8
[5,] 19.90 19.40 18.20 19.1

$n
[1] 18 18 18 18

$conf
           [,1]       [,2]        [,3]      [,4]
[1,] -0.3561558 -0.5678787 -0.08374624 0.3131452
[2,]  8.6561558  8.6678787  8.18374624 7.6868548

$out
numeric(0)

$group
numeric(0)

$names
[1] "1" "2" "3" "4"

> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/55qaw1424975097.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]
[1,] -2.70 -3.10 -2.40 -2.3
[2,] -1.20 -0.90 -1.00 -0.8
[3,] -0.25 -0.35 -0.15 -0.4
[4,]  0.00  0.60  0.30  0.5
[5,]  0.20  2.20  1.70  1.7

$n
[1] 18 18 18 17

$conf
           [,1]       [,2]       [,3]        [,4]
[1,] -0.6968915 -0.9086144 -0.6341324 -0.89816817
[2,]  0.1968915  0.2086144  0.3341324  0.09816817

$out
[1] 1.9 2.6 2.7 4.1 2.8

$group
[1] 1 1 1 2 4

$names
[1] "1" "2" "3" "4"

Warning message:
In bxp(list(stats = c(-2.7, -1.2, -0.25, 0, 0.2, -3.1, -0.899999999999999,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/6wrwo1424975097.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]  [,3]  [,4]  [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
[1,] 11.40 10.40 13.30 15.80  8.80 4.90 2.80  4.0 3.70  4.50  4.10  1.70 -5.30
[2,] 11.40 10.50 14.25 17.00  9.55 5.40 3.20  4.1 3.75  4.55  4.10  2.25 -5.25
[3,] 11.75 10.75 16.30 18.80 11.20 6.35 3.75  4.2 3.90  4.60  4.15  3.00 -4.05
[4,] 12.45 11.25 18.25 19.65 12.80 7.50 3.95  4.5 4.00  4.60  4.30  3.80 -1.55
[5,] 12.80 11.60 19.10 19.90 13.50 8.20 4.00  4.8 4.00  4.60  4.40  4.40 -0.20
     [,14] [,15] [,16] [,17] [,18] [,19]
[1,] -4.80 -3.40 -8.60 -8.70 -1.50    NA
[2,] -3.50 -3.10 -8.10 -8.65 -0.75    NA
[3,] -1.65 -2.40 -6.55 -6.60  0.60    NA
[4,] -0.95 -1.75 -4.80 -4.45  1.50    NA
[5,] -0.80 -1.50 -4.10 -4.30  1.80    NA

$n
 [1] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 0

$conf
        [,1]    [,2]  [,3]    [,4]    [,5]  [,6]   [,7]  [,8]   [,9]  [,10]
[1,] 10.9205 10.1575 13.14 16.7065  8.6325 4.691 3.1575 3.884 3.7025 4.5605
[2,] 12.5795 11.3425 19.46 20.8935 13.7675 8.009 4.3425 4.516 4.0975 4.6395
     [,11]  [,12]  [,13]   [,14]   [,15]  [,16]  [,17]   [,18] [,19]
[1,] 3.992 1.7755 -6.973 -3.6645 -3.4665 -9.157 -9.918 -1.1775    NA
[2,] 4.308 4.2245 -1.127  0.3645 -1.3335 -3.943 -3.282  2.3775    NA

$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" NA  

Warning message:
In bxp(list(stats = c(11.4, 11.4, 11.75, 12.45, 12.8, 10.4, 10.5,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/7he241424975097.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,] 4.016667 4.000 3.50000
[2,] 4.147222 4.025 3.82500
[3,] 4.350000 4.050 4.28125
[4,] 4.505556 4.100 4.46875
[5,] 4.588889 4.150 4.52500

$n
[1] 4 4 4

$conf
         [,1]    [,2]     [,3]
[1,] 4.066917 3.99075 3.772687
[2,] 4.633083 4.10925 4.789813

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(4.01666666666667, 4.14722222222222, 4.35,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> 
> try(system("convert tmp/10ixs1424975097.ps tmp/10ixs1424975097.png",intern=TRUE))
character(0)
> try(system("convert tmp/2eazj1424975097.ps tmp/2eazj1424975097.png",intern=TRUE))
character(0)
> try(system("convert tmp/31bip1424975097.ps tmp/31bip1424975097.png",intern=TRUE))
character(0)
> try(system("convert tmp/4xvq61424975097.ps tmp/4xvq61424975097.png",intern=TRUE))
character(0)
> try(system("convert tmp/55qaw1424975097.ps tmp/55qaw1424975097.png",intern=TRUE))
character(0)
> try(system("convert tmp/6wrwo1424975097.ps tmp/6wrwo1424975097.png",intern=TRUE))
character(0)
> try(system("convert tmp/7he241424975097.ps tmp/7he241424975097.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  2.429   0.472   2.922