R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(503334,503737,504101,504504,504894,505297,505687,506090,506493,506883,507286,507676,508079,508482,508846,509249,509639,510042,510432,510835,511238,511628,512031,512421,512824,513227,513604,514007,514397,514800,515190,515593,515996,516386,516789,517179,517582,517985,518349,518752,519142,519545,519935,520338,520741,521131,521534,521924,522327,522730,523094,523497,523887,524290,524680,525083,525486,525876,526279,526669,527072,527475,527839,528242,528632,529035,529425,529828,530231,530621,531024,531414,531817,532220,532597,533000,533390,533793,534183,534586,534989,535379,535782,536172,536575,536978,537342,537745,538135,538538,538928,539331,539734,540124,540527,540917,541320,541723,542087,542490,542880,543283,543673,544076,544479,544869,545272,545662)
> par4 = '12'
> par3 = ''
> par2 = ''
> par1 = ''
> ylimmax = ''
> ylimmin = ''
> ylab = 'Aantal exemplaren'
> xlab = 'Tijd ( in maanden )'
> main = 'Aantal verkochte exemplaren La Libre'
> par4 <- '12'
> par3 <- ''
> par2 <- ''
> par1 <- ''
> #'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. 
 503300  513900  524500  524500  535100  545700 
> n <- length(x)
> postscript(file="/var/wessaorg/rcomp/tmp/1g72p1437224693.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/2ya851437224693.tab") 
> 
> try(system("convert tmp/1g72p1437224693.ps tmp/1g72p1437224693.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.545   0.079   0.625