R version 3.2.2 (2015-08-14) -- "Fire Safety"
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> x <- c(72.04,72.26,72.53,72.41,72.91,72.84,72.92,73.03,72.98,72.99,73.15,73.34,73.8,74.46,74.54,74.92,74.19,74.34,74.54,74.4,73.78,74.42,73.54,74.45,76.31,76.44,76.64,76.44,76.49,76.52,78.15,78.54,78.79,78.75,78.28,78.44,78.75,80.54,80.84,81.11,80.47,80.53,80.35,80.29,80.27,80.1,79.8,79.84,79.92,80.26,80.69,84.5,85.45,86.19,86.4,85.98,85.87,86.06,86.43,86.43,86.37,86.84,86.73,90.99,92.61,93.83,94.2,94.01,93.47,93.27,94.3,94.53,94.59,94.69,94.67,96.55,97.14,97.32,97.97,98.49,99.11,99.09,98.76,99.2,99.61,99.54,99.68,100.75,100.38,100.79,100.39,100.39,100.12,100,99.17,99.17,99.59,99.96,99.68,101.03,100.99,101.38,101.84,101.52,101.37,101.22,101.45,101.99)
> par4 = '12'
> par3 = 'Prijzen van chocolade'
> par2 = 'NBB'
> par1 = 'Chocolade'
> ylimmax = ''
> ylimmin = ''
> ylab = 'index'
> xlab = 'tijd in maand (01/2006 - 01/2014)'
> main = 'Chocolade'
> par4 <- '12'
> par3 <- 'Prijzen van chocolade'
> par2 <- 'NBB'
> par1 <- 'Chocolade'
> #'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. 
  72.04   76.48   85.93   86.60   98.84  102.00 
> n <- length(x)
> postscript(file="/var/wessaorg/rcomp/tmp/1qtzc1443863066.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/28pys1443863066.tab") 
> 
> try(system("convert tmp/1qtzc1443863066.ps tmp/1qtzc1443863066.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.519   0.112   0.628