R version 2.13.0 (2011-04-13)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- c(6.19,6.31,6.35,6.38,6.38,6.36,6.34,6.49,6.5,6.5,6.55,6.57,6.65,6.61,6.66,6.73,6.73,6.75,6.75,6.71,6.77,6.83,6.9,6.89,7.14,7.35,7.43,7.42,7.41,7.46,7.47,7.45,7.47,7.44,7.43,7.43,7.44,7.49,7.48,7.43,7.33,7.42,7.98,7.41,7.25,7.04,6.98,6.94,6.9,6.92,6.86,6.86,6.89,6.91,6.9,6.88,6.78,6.79,6.81,6.78)
> par1 = '0'
> ylab = 'Per maand'
> xlab = 'Prijs pizza 2006-2010 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/wessaorg/rcomp/tmp/1hd1p1317744566.ps",horizontal=F,onefile=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 (60 obs.);	Bandwidth 'bw' = 0.1612

       x               y            
 Min.   :5.706   Min.   :0.0004644  
 1st Qu.:6.396   1st Qu.:0.0376045  
 Median :7.085   Median :0.3210105  
 Mean   :7.085   Mean   :0.3622870  
 3rd Qu.:7.774   3rd Qu.:0.6459480  
 Max.   :8.464   Max.   :0.9846659  
> postscript(file="/var/wessaorg/rcomp/tmp/22dlx1317744566.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/33lg21317744566.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/4yqfo1317744566.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/5dmh41317744566.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/6xhb81317744566.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/7e3it1317744566.ps",horizontal=F,onefile=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/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,'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/wessaorg/rcomp/tmp/8q8y81317744566.tab") 
> 
> try(system("convert tmp/1hd1p1317744566.ps tmp/1hd1p1317744566.png",intern=TRUE))
character(0)
> try(system("convert tmp/22dlx1317744566.ps tmp/22dlx1317744566.png",intern=TRUE))
character(0)
> try(system("convert tmp/33lg21317744566.ps tmp/33lg21317744566.png",intern=TRUE))
character(0)
> try(system("convert tmp/4yqfo1317744566.ps tmp/4yqfo1317744566.png",intern=TRUE))
character(0)
> try(system("convert tmp/5dmh41317744566.ps tmp/5dmh41317744566.png",intern=TRUE))
character(0)
> try(system("convert tmp/6xhb81317744566.ps tmp/6xhb81317744566.png",intern=TRUE))
character(0)
> try(system("convert tmp/7e3it1317744566.ps tmp/7e3it1317744566.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  1.910   0.402   2.323