R version 3.3.3 (2017-03-06) -- "Another Canoe"
Copyright (C) 2017 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(10,11,11,12,13,13,15,15,16,16,17,18,18,18,19,19,20,20,21,22,24,24,24,24,25,25,25,26,26,28,29,29,30,30,30,31,31,32,32,33,36,36,38,38,39,40,41,41)
> 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] 48
> (np <- floor(n / par1))
[1] 4
> 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 4 4 4 4 4 4 4 4 4 4 4
> arr
      [,1] [,2] [,3] [,4] [,5]
 [1,]   10   18   25   31   NA
 [2,]   11   18   25   32   NA
 [3,]   11   19   25   32   NA
 [4,]   12   19   26   33   NA
 [5,]   13   20   26   36   NA
 [6,]   13   20   28   36   NA
 [7,]   15   21   29   38   NA
 [8,]   15   22   29   38   NA
 [9,]   16   24   30   39   NA
[10,]   16   24   30   40   NA
[11,]   17   24   30   41   NA
[12,]   18   24   31   41   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/1c6qw1493151943.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/2jwe11493151943.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/3wggi1493151943.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/4i2xa1493151943.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,] 10.0 11.0 11.0 12.0 13.0 13.0 15.0 15.0 16.0    16  17.0  18.0
[2,] 14.0 14.5 15.0 15.5 16.5 16.5 18.0 18.5 20.0    20  20.5  21.0
[3,] 21.5 21.5 22.0 22.5 23.0 24.0 25.0 25.5 27.0    27  27.0  27.5
[4,] 28.0 28.5 28.5 29.5 31.0 32.0 33.5 33.5 34.5    35  35.5  36.0
[5,] 31.0 32.0 32.0 33.0 36.0 36.0 38.0 38.0 39.0    40  41.0  41.0

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

$conf
      [,1]  [,2]   [,3]  [,4]   [,5]   [,6]   [,7]  [,8]   [,9] [,10] [,11]
[1,] 10.44 10.44 11.335 11.44 11.545 11.755 12.755 13.65 15.545 15.15 15.15
[2,] 32.56 32.56 32.665 33.56 34.455 36.245 37.245 37.35 38.455 38.85 38.85
     [,12]
[1,] 15.65
[2,] 39.35

$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(10, 14, 21.5, 28, 31, 11, 14.5, 21.5, 28.5,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/5kksf1493151943.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]
[1,] 10.0 18.0 25.0 31.0   NA
[2,] 11.5 19.0 25.5 32.5   NA
[3,] 14.0 20.5 28.5 37.0   NA
[4,] 16.0 24.0 30.0 39.5   NA
[5,] 18.0 24.0 31.0 41.0   NA

$n
[1] 12 12 12 12  0

$conf
         [,1]     [,2]     [,3]     [,4] [,5]
[1,] 11.94752 18.21947 26.44752 33.80725   NA
[2,] 16.05248 22.78053 30.55248 40.19275   NA

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(10, 11.5, 14, 16, 18, 18, 19, 20.5, 24, 24,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/6i4j41493151943.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,]  8.920949   21  9.750
[2,]  9.046173   21 10.375
[3,]  9.787220   23 10.500
[4,]  9.962415   23 11.000
[5,] 10.165300   24 11.750

$n
[1] 12 12 12

$conf
          [,1]     [,2]     [,3]
[1,]  9.369315 22.08779 10.21493
[2,] 10.205124 23.91221 10.78507

$out
numeric(0)

$group
numeric(0)

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

Warning message:
In bxp(list(stats = c(8.92094912738176, 9.04617313964403, 9.78721964980937,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> 
> try(system("convert tmp/1c6qw1493151943.ps tmp/1c6qw1493151943.png",intern=TRUE))
character(0)
> try(system("convert tmp/2jwe11493151943.ps tmp/2jwe11493151943.png",intern=TRUE))
character(0)
> try(system("convert tmp/3wggi1493151943.ps tmp/3wggi1493151943.png",intern=TRUE))
character(0)
> try(system("convert tmp/4i2xa1493151943.ps tmp/4i2xa1493151943.png",intern=TRUE))
character(0)
> try(system("convert tmp/5kksf1493151943.ps tmp/5kksf1493151943.png",intern=TRUE))
character(0)
> try(system("convert tmp/6i4j41493151943.ps tmp/6i4j41493151943.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  3.112   0.318   3.549