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(87.5,87.3,87.8,88.1,88.0,87.8,87.0,87.2,87.0,89.4,89.1,87.8,87.8,88.0,86.5,84.1,84.3,84.7,85.7,86.4,86.0,86.9,89.1,90.7,89.8,89.4,88.6,86.8,86.8,89.5,88.5,91.2,92.3,92.0,92.8,92.9,92.7,94.2,94.0,94.3,94.8,94.7,95.1,97.0,97.9,97.3,96.5,98.1,99.3,99.9,99.9,99.9,99.8,99.5,99.9,100.1,100.1,100.2,100.6,100.8,100.8,100.5,101.0,100.5,99.0,97.9,97.6,97.2,96.5,96.3,96.3,96.2,95.6,93.5,93.2,93.6,94.6,96.1,98.4,99.6,99.4,99.7,100.1,99.9)
> par4 = '12'
> par3 = ''
> par2 = 'statt'
> par1 = 'prijs cacao'
> ylimmax = ''
> ylimmin = ''
> ylab = 'prijs tov 2013'
> xlab = 'aantal maanden vanaf 2009'
> main = 'Univariate Data'
> par4 <- '12'
> par3 <- ''
> par2 <- 'statt'
> par1 <- 'prijs cacao'
> #'GNU S' R Code compiled by R2WASP v. 1.2.291 ()
> #Author: root
> #To cite this work: Wessa P., (2012), Plot of univariate data series (v1.0.4) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_univariatedataseries.wasp/
> #Source of accompanying publication: 
> #
> if (par4 != 'No season') {
+ par4 <- as.numeric(par4)
+ if (par4 < 4) par4 <- 12
+ }
> summary(x)
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
  84.10   88.07   94.25   93.63   99.08  101.00 
> n <- length(x)
> postscript(file="/var/wessaorg/rcomp/tmp/18z351454614234.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/2d8m51454614234.tab") 
> 
> try(system("convert tmp/18z351454614234.ps tmp/18z351454614234.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.568   0.145   0.714