R version 3.2.3 (2015-12-10) -- "Wooden Christmas-Tree"
Copyright (C) 2015 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(6678,6554,6513,6210,5928,6268,5582,5869,5764,6082,6062,6810,6727,6537,6175,6014,6109)
> par1 = '12'
> par1 <- '12'
> #'GNU S' R Code compiled by R2WASP v. 1.2.327 (Mon, 30 Nov 2015 07:01:18 +0000)
> #Author: root
> #To cite this work: Wessa P., (2015), Mean Plot (v1.0.5) 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)
> x <- na.omit(x)
> (n <- length(x))
[1] 17
> (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] 2 2 2 2 2 1 1 1 1 1 1 1
> arr
      [,1] [,2]
 [1,] 6678 6727
 [2,] 6554 6537
 [3,] 6513 6175
 [4,] 6210 6014
 [5,] 5928 6109
 [6,] 6268   NA
 [7,] 5582   NA
 [8,] 5869   NA
 [9,] 5764   NA
[10,] 6082   NA
[11,] 6062   NA
[12,] 6810   NA
> darr
      [,1] [,2]
 [1,] -124 -190
 [2,]  -41 -362
 [3,] -303 -161
 [4,] -282   95
 [5,]  340   NA
 [6,] -686   NA
 [7,]  287   NA
 [8,] -105   NA
 [9,]  318   NA
[10,]  -20   NA
[11,]  748   NA
[12,]  -83   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/1aoru1457866884.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/25qt81457866884.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/3g2ow1457866884.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/468wl1457866884.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,] 6678.0 6537.0 6175 6014 5928.0 6268 5582 5869 5764  6082  6062  6810
[2,] 6678.0 6537.0 6175 6014 5928.0 6268 5582 5869 5764  6082  6062  6810
[3,] 6702.5 6545.5 6344 6112 6018.5 6268 5582 5869 5764  6082  6062  6810
[4,] 6727.0 6554.0 6513 6210 6109.0 6268 5582 5869 5764  6082  6062  6810
[5,] 6727.0 6554.0 6513 6210 6109.0 6268 5582 5869 5764  6082  6062  6810

$n
 [1] 2 2 2 2 2 1 1 1 1 1 1 1

$conf
         [,1]     [,2]     [,3]     [,4]     [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 6647.756 6526.507 5966.377 5893.023 5816.282 6268 5582 5869 5764  6082
[2,] 6757.244 6564.493 6721.623 6330.977 6220.718 6268 5582 5869 5764  6082
     [,11] [,12]
[1,]  6062  6810
[2,]  6062  6810

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(6678, 6678, 6702.5, 6727, 6727, 6537, 6537,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/5ypjs1457866884.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,] -190 -362.0 -303 -282.0  340 -686  287 -105  318   -20   748   -83
[2,] -190 -362.0 -303 -282.0  340 -686  287 -105  318   -20   748   -83
[3,] -157 -201.5 -232  -93.5  340 -686  287 -105  318   -20   748   -83
[4,] -124  -41.0 -161   95.0  340 -686  287 -105  318   -20   748   -83
[5,] -124  -41.0 -161   95.0  340 -686  287 -105  318   -20   748   -83

$n
 [1] 2 2 2 2 1 1 1 1 1 1 1 1

$conf
          [,1]      [,2]       [,3]      [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] -230.7371 -560.1304 -390.64648 -514.6952  340 -686  287 -105  318   -20
[2,]  -83.2629  157.1304  -73.35352  327.6952  340 -686  287 -105  318   -20
     [,11] [,12]
[1,]   748   -83
[2,]   748   -83

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(-190, -190, -157, -124, -124, -362, -362,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/6jmyw1457866884.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,] 5582.0 6014
[2,] 5898.5 6109
[3,] 6146.0 6175
[4,] 6533.5 6537
[5,] 6810.0 6727

$n
[1] 12  5

$conf
         [,1]     [,2]
[1,] 5856.372 5872.576
[2,] 6435.628 6477.424

$out
numeric(0)

$group
numeric(0)

$names
[1] "1" NA 

Warning message:
In bxp(list(stats = c(5582, 5898.5, 6146, 6533.5, 6810, 6014, 6109,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/710ka1457866884.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,] 5582.00 5582.00 5582.00
[2,] 5943.75 5943.75 5943.75
[3,] 6097.00 6097.00 6097.00
[4,] 6444.75 6444.75 6444.75
[5,] 6810.00 6810.00 6810.00

$n
[1] 12 12 12

$conf
         [,1]     [,2]     [,3]
[1,] 5868.491 5868.491 5868.491
[2,] 6325.509 6325.509 6325.509

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(5582, 5943.75, 6097, 6444.75, 6810, 5582,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> 
> try(system("convert tmp/1aoru1457866884.ps tmp/1aoru1457866884.png",intern=TRUE))
character(0)
> try(system("convert tmp/25qt81457866884.ps tmp/25qt81457866884.png",intern=TRUE))
character(0)
> try(system("convert tmp/3g2ow1457866884.ps tmp/3g2ow1457866884.png",intern=TRUE))
character(0)
> try(system("convert tmp/468wl1457866884.ps tmp/468wl1457866884.png",intern=TRUE))
character(0)
> try(system("convert tmp/5ypjs1457866884.ps tmp/5ypjs1457866884.png",intern=TRUE))
character(0)
> try(system("convert tmp/6jmyw1457866884.ps tmp/6jmyw1457866884.png",intern=TRUE))
character(0)
> try(system("convert tmp/710ka1457866884.ps tmp/710ka1457866884.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  2.542   0.428   2.991