R version 2.13.0 (2011-04-13)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- c(26.73,26.85,27.01,27.09,27.11,27.16,27.13,27.19,27.49,27.63,27.72,27.77,27.81,27.92,28.07,28.14,28.17,28.2,28.21,28.2,28.19,28.24,28.25,28.26,28.33,28.67,28.81,28.99,29.16,29.25,29.25,29.38,29.48,29.65,29.69,29.73,29.81,30.05,30.29,30.37,30.5,30.67,30.76,30.84,30.86,31.09,31.2,31.19,31.18,31.31,31.39,31.39,31.37,31.36,31.37,31.35,31.34,31.47,31.48,31.54)
> par1 = '12'
> par1 <- '12'
> #'GNU S' R Code compiled by R2WASP v. 1.2.291 ()
> #Author: root
> #To cite this work: Wessa P., (2012), Standard Deviation Plot (v1.0.2) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_sdplot.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #
> par1 <- as.numeric(par1)
> (n <- length(x))
[1] 60
> (np <- floor(n / par1))
[1] 5
> 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] 5 5 5 5 5 5 5 5 5 5 5 5
> arr
       [,1]  [,2]  [,3]  [,4]  [,5] [,6]
 [1,] 26.73 27.81 28.33 29.81 31.18   NA
 [2,] 26.85 27.92 28.67 30.05 31.31   NA
 [3,] 27.01 28.07 28.81 30.29 31.39   NA
 [4,] 27.09 28.14 28.99 30.37 31.39   NA
 [5,] 27.11 28.17 29.16 30.50 31.37   NA
 [6,] 27.16 28.20 29.25 30.67 31.36   NA
 [7,] 27.13 28.21 29.25 30.76 31.37   NA
 [8,] 27.19 28.20 29.38 30.84 31.35   NA
 [9,] 27.49 28.19 29.48 30.86 31.34   NA
[10,] 27.63 28.24 29.65 31.09 31.47   NA
[11,] 27.72 28.25 29.69 31.20 31.48   NA
[12,] 27.77 28.26 29.73 31.19 31.54   NA
> arr.sd <- array(NA,dim=par1)
> arr.range <- array(NA,dim=par1)
> arr.iqr <- array(NA,dim=par1)
> for (j in 1:par1)
+ {
+ arr.sd[j] <- sqrt(var(arr[j,],na.rm=TRUE))
+ arr.range[j] <- max(arr[j,],na.rm=TRUE) - min(arr[j,],na.rm=TRUE)
+ arr.iqr[j] <- quantile(arr[j,],0.75,na.rm=TRUE) - quantile(arr[j,],0.25,na.rm=TRUE)
+ }
> overall.sd <- sqrt(var(x))
> overall.range <- max(x) - min(x)
> overall.iqr <- quantile(x,0.75) - quantile(x,0.25)
> postscript(file="/var/wessaorg/rcomp/tmp/1wwx81338298826.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.sd,type='b',ylab='S.D.',main='Standard Deviation Plot',xlab='Periodic Index')
> mtext(paste('# blocks = ',np))
> abline(overall.sd,0)
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/2phht1338298826.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.range,type='b',ylab='range',main='Range Plot',xlab='Periodic Index')
> mtext(paste('# blocks = ',np))
> abline(overall.range,0)
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/36ovk1338298826.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.iqr,type='b',ylab='IQR',main='Interquartile Range Plot',xlab='Periodic Index')
> mtext(paste('# blocks = ',np))
> abline(overall.iqr,0)
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/4vv6x1338298826.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,] 26.73 26.85 27.01 27.09 27.11 27.16 27.13 27.19 27.49 27.63 27.72 27.77
[2,] 27.81 27.92 28.07 28.14 28.17 28.20 28.21 28.20 28.19 28.24 28.25 28.26
[3,] 28.33 28.67 28.81 28.99 29.16 29.25 29.25 29.38 29.48 29.65 29.69 29.73
[4,] 29.81 30.05 30.29 30.37 30.50 30.67 30.76 30.84 30.86 31.09 31.20 31.19
[5,] 31.18 31.31 31.39 31.39 31.37 31.36 31.37 31.35 31.34 31.47 31.48 31.54

$n
 [1] 5 5 5 5 5 5 5 5 5 5 5 5

$conf
         [,1]     [,2]     [,3]     [,4]     [,5]    [,6]     [,7]     [,8]
[1,] 26.91681 27.16495 27.24135 27.41429 27.51363 27.5047 27.44818 27.51458
[2,] 29.74319 30.17505 30.37865 30.56571 30.80637 30.9953 31.05182 31.24542
         [,9]   [,10]    [,11]    [,12]
[1,] 27.59338 27.6362 27.60554 27.65967
[2,] 31.36662 31.6638 31.77446 31.80033

$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(26.73, 27.81, 28.33, 29.81, 31.18, 26.85,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/53af71338298826.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]
[1,] 26.730 28.070 28.330 29.810 31.310   NA
[2,] 27.050 28.105 28.900 30.330 31.345   NA
[3,] 27.145 28.195 29.250 30.715 31.370   NA
[4,] 27.560 28.225 29.565 30.975 31.430   NA
[5,] 27.770 28.260 29.730 31.200 31.540   NA

$n
[1] 12 12 12 12 12  0

$conf
         [,1]     [,2]     [,3]     [,4]     [,5] [,6]
[1,] 26.91239 28.14027 28.94669 30.42081 31.33123   NA
[2,] 27.37761 28.24973 29.55331 31.00919 31.40877   NA

$out
[1] 27.81 27.92 31.18

$group
[1] 2 2 5

$names
[1] "1" "2" "3" "4" "5" NA 

Warning message:
In bxp(list(stats = c(26.73, 27.05, 27.145, 27.56, 27.77, 28.07,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/6x6h41338298826.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(cbind(arr.sd,arr.range,arr.iqr))
> names(z) <- list('S.D.','Range','IQR')
> (boxplot(z,notch=TRUE,col='grey',ylab='Overall Variability',main='Notched Box Plots'))
$stats
         [,1]  [,2]  [,3]
[1,] 1.657399 3.760 2.000
[2,] 1.691338 3.845 2.225
[3,] 1.721876 4.220 2.510
[4,] 1.745444 4.340 2.760
[5,] 1.755591 4.460 2.950

$n
[1] 12 12 12

$conf
         [,1]     [,2]     [,3]
[1,] 1.697198 3.994227 2.265983
[2,] 1.746554 4.445773 2.754017

$out
numeric(0)

$group
numeric(0)

$names
[1] "S.D."  "Range" "IQR"  

Warning message:
In bxp(list(stats = c(1.65739856401531, 1.69133816508714, 1.72187608237701,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> 
> try(system("convert tmp/1wwx81338298826.ps tmp/1wwx81338298826.png",intern=TRUE))
character(0)
> try(system("convert tmp/2phht1338298826.ps tmp/2phht1338298826.png",intern=TRUE))
character(0)
> try(system("convert tmp/36ovk1338298826.ps tmp/36ovk1338298826.png",intern=TRUE))
character(0)
> try(system("convert tmp/4vv6x1338298826.ps tmp/4vv6x1338298826.png",intern=TRUE))
character(0)
> try(system("convert tmp/53af71338298826.ps tmp/53af71338298826.png",intern=TRUE))
character(0)
> try(system("convert tmp/6x6h41338298826.ps tmp/6x6h41338298826.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  1.623   0.417   2.044