R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(272567,266674,301601,322421,313776,300156,315745,299214,295184,340003,332748,316337,293572,308713,354188,334540,313285,337881,356955,323661,296034,377623,342590,300905,309470,271492,307759,326106,335576,310485,335173,298344,288269,319410,327692,315401,277720,260573,318025,300264,317640,303273,315089,275840,292823,339759,328032,344675,260952,275466,331940,347644,338063,384283,398482,347062,350731,368799,387710,362988)
> par20 = ''
> par19 = ''
> par18 = ''
> par17 = ''
> par16 = ''
> par15 = ''
> par14 = ''
> par13 = ''
> par12 = ''
> par11 = ''
> par10 = ''
> par9 = ''
> par8 = ''
> par7 = ''
> par6 = ''
> par5 = ''
> par4 = '12'
> par3 = ''
> par2 = ''
> par1 = 'Internationale Handel in- en uitvoer'
> ylimmax = ''
> ylimmin = ''
> ylab = 'Aantal ingevoerde waarden'
> xlab = 'Maandelijks (01/2011 tot 12/2015)'
> main = 'Internationale handel in- en uitvoer'
> if (par4 != 'No season') {
+ par4 <- as.numeric(par4)
+ if (par4 < 4) par4 <- 12
+ }
> summary(x)
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
 260600  299900  317000  319800  338500  398500 
> n <- length(x)
> postscript(file="/var/wessaorg/rcomp/tmp/18pz71474920255.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> if (par4=='No season') {
+ plot(x,col=2,type='b',main=main,xlab=xlab,ylab=ylab,xaxt='n')
+ axis(1,at=seq(1,n,10))
+ }
> if (par4!='No season') {
+ plot(x,col=2,type='b',main=main,xlab=xlab,ylab=ylab,xaxt='n')
+ axis(1,at=seq(1,n,par4))
+ grid(nx=0,ny=NULL,col='black')
+ abline(v=seq(1,n,par4),col='black',lty='dotted')
+ }
> dev.off()
null device 
          1 
> 
> #Note: the /var/wessaorg/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/wessaorg/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'Univariate Dataseries',2,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Name of dataseries',header=TRUE)
> a<-table.element(a,par1)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Source',header=TRUE)
> a<-table.element(a,par2)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Description',header=TRUE)
> a<-table.element(a,par3)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Number of observations',header=TRUE)
> a<-table.element(a,length(x))
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/wessaorg/rcomp/tmp/268jq1474920255.tab") 
> 
> try(system("convert tmp/18pz71474920255.ps tmp/18pz71474920255.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.568   0.032   0.607