R version 2.12.1 (2010-12-16)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-redhat-linux-gnu (64-bit)

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> x <- c(13.81,13.9,13.91,13.94,13.96,14.01,14.01,14.06,14.09,14.13,14.12,14.13,14.14,14.16,14.21,14.26,14.29,14.32,14.33,14.39,14.48,14.44,14.46,14.48,14.53,14.58,14.62,14.62,14.61,14.65,14.68,14.7,14.78,14.84,14.89,14.89,15.13,15.25,15.33,15.36,15.4,15.4,15.41,15.47,15.54,15.55,15.59,15.65,15.75,15.86,15.89,15.94,15.93,15.95,15.99,15.99,16.06,16.08,16.07,16.11,16.15,16.18,16.3,16.42,16.49,16.5,16.58,16.64,16.66,16.81,16.91,16.92,16.95,17.11,17.16,17.16,17.27,17.34,17.39,17.43,17.45,17.5,17.56,17.65)
> par4 = '12'
> par3 = 'emiddelde prijs pepersteak restaurants & cafés'
> par2 = 'Belgostat'
> par1 = 'Gemiddelde prijs pepersteak restaurants & cafés'
> ylimmax = ''
> ylimmin = ''
> ylab = 'Prijs'
> xlab = 'Periode'
> main = 'Gemiddelde prijs pepersteak '
> if (par4 != 'No season') {
+ par4 <- as.numeric(par4)
+ if (par4 < 4) par4 <- 12
+ }
> summary(x)
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
  13.81   14.46   15.40   15.47   16.33   17.65 
> n <- length(x)
> postscript(file="/var/www/wessaorg/rcomp/tmp/13z1r1297774228.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/www/wessaorg/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/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/www/wessaorg/rcomp/tmp/2xodl1297774228.tab") 
> 
> try(system("convert tmp/13z1r1297774228.ps tmp/13z1r1297774228.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.470   0.100   0.582