R version 2.8.1 (2008-12-22)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(20.73,20.73,20.74,20.74,20.75,20.75,20.77,20.78,20.78,20.8,20.84,20.85,20.86,20.86,20.86,20.86,20.9,20.92,20.95,20.95,20.95,20.96,21.1,21.18,21.19,21.19,21.19,21.19,21.19,21.21,21.22,21.22,21.22,21.23,21.41,21.42,21.43,21.44,21.44,21.44,21.48,21.53,21.54,21.54,21.54,21.54,21.54,21.54,21.54,21.54,21.54,21.54,21.57,21.6,21.61,21.6,21.6,21.71,21.75,21.84,21.85,21.92,21.92,21.93,22,22,21.99,22.01,22.01,22.06,22.03,22.05,22.05,22.06,22.06,22.13,22.06,22.25,22.28,22.18)
> par1 = '0'
> ylab = 'tijd in maanden'
> xlab = 'prijs in euro'
> #'GNU S' R Code compiled by R2WASP v. 1.0.44 ()
> #Author: Prof. Dr. P. Wessa
> #To cite this work: AUTHOR(S), (YEAR), YOUR SOFTWARE TITLE (vNUMBER) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_YOURPAGE.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #Technical description: 
> if (par1 == '0') bw <- 'nrd0'
> if (par1 != '0') bw <- as.numeric(par1)
> postscript(file="/var/www/html/rcomp/tmp/1enqo1234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity1<-density(x,bw=bw,kernel='gaussian',na.rm=TRUE)
> plot(mydensity1,main='Gaussian Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> mydensity1

Call:
	density.default(x = x, bw = bw, kernel = "gaussian", na.rm = TRUE)

Data: x (80 obs.);	Bandwidth 'bw' = 0.1737

       x               y            
 Min.   :20.21   Min.   :0.0006011  
 1st Qu.:20.86   1st Qu.:0.0921160  
 Median :21.50   Median :0.5225293  
 Mean   :21.50   Mean   :0.3853694  
 3rd Qu.:22.15   3rd Qu.:0.5899168  
 Max.   :22.80   Max.   :0.7352085  
> postscript(file="/var/www/html/rcomp/tmp/2ueix1234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity2<-density(x,bw=bw,kernel='epanechnikov',na.rm=TRUE)
> plot(mydensity2,main='Epanechnikov Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/3eq4a1234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity3<-density(x,bw=bw,kernel='rectangular',na.rm=TRUE)
> plot(mydensity3,main='Rectangular Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/41y0u1234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity4<-density(x,bw=bw,kernel='triangular',na.rm=TRUE)
> plot(mydensity4,main='Triangular Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/59qs01234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity5<-density(x,bw=bw,kernel='biweight',na.rm=TRUE)
> plot(mydensity5,main='Biweight Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/6v7ub1234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity6<-density(x,bw=bw,kernel='cosine',na.rm=TRUE)
> plot(mydensity6,main='Cosine Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/7xl7b1234358000.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> mydensity7<-density(x,bw=bw,kernel='optcosine',na.rm=TRUE)
> plot(mydensity7,main='Optcosine Kernel',xlab=xlab,ylab=ylab)
> grid()
> dev.off()
null device 
          1 
> 
> #Note: the /var/www/html/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/html/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'Properties of Density Trace',2,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Bandwidth',header=TRUE)
> a<-table.element(a,mydensity1$bw)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'#Observations',header=TRUE)
> a<-table.element(a,mydensity1$n)
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/www/html/rcomp/tmp/83jnv1234358000.tab") 
> 
> system("convert tmp/1enqo1234358000.ps tmp/1enqo1234358000.png")
> system("convert tmp/2ueix1234358000.ps tmp/2ueix1234358000.png")
> system("convert tmp/3eq4a1234358000.ps tmp/3eq4a1234358000.png")
> system("convert tmp/41y0u1234358000.ps tmp/41y0u1234358000.png")
> system("convert tmp/59qs01234358000.ps tmp/59qs01234358000.png")
> system("convert tmp/6v7ub1234358000.ps tmp/6v7ub1234358000.png")
> system("convert tmp/7xl7b1234358000.ps tmp/7xl7b1234358000.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.381   1.145   2.693