[R] boxplot axis labelling

[rich at thevillas.eclipse.co.uk]

   Hi,


   i'm very new to R, so sorry for what i'm sure is a very basic question. I'm
   producing a boxplot with the data below:

   df3<-data.frame(
   x=c(10,11,115,12,13,14,16,17,18,21,22,23,24,26,27,28,29,3,30,32,33,34,35,4,4
   1,45,5,50,52,56,58,6,67,6738,68,7,8,9),
   fq=c(8,11,1,2,4,4,2,2,6,3,4,2,2,1,1,1,4,51,3,1,1,1,1,35,1,1,19,2,1,1,1,14,1,
   1,1,10,13,5),
   fqcvd=c(5,8,1,1,3,3,2,2,5,3,4,2,2,0,1,1,3,13,2,1,1,1,1,17,1,0,11,2,1,1,1,7,1
   ,1,1,7,7,1),
   fqcan=c(1,1,0,2,1,1,1,0,3,0,2,0,1,0,1,0,1,4,2,1,1,0,0,4,1,1,2,2,0,1,0,2,0,1,
   1,2,3,1),
   fqnoncan=c(8,11,0,2,4,4,2,0,6,0,4,0,2,0,1,0,4,50,3,1,1,0,0,35,1,1,19,2,0,1,0
   ,14,0,1,1,10,13,5))
   k3<-with(df3,rep(x,times=fq))
   kcvd3<-with(df3,rep(x,times=fqcvd))
   kcvd3<-c(kcvd3,rep(NA,times=length(k3)-length(kcvd3)))
   kcan3<-with(df3,rep(x,times=fqcan))
   kcan3<-c(kcan3,rep(NA,times=length(k3)-length(kcan3)))
   knoncan3<-with(df3,rep(x,times=fqnoncan))
   knoncan3<-c(knoncan3,rep(NA,times=length(k3)-length(knoncan3)))
   dfnew<-data.frame(kcvd3,kcan3,knoncan3,k3)
   boxplot(dfnew,log='y', ylim=c(1,4000))


   This produces x axis labels  'kcvd3,kcan3,knoncan3,k3', one for each plot as
   you might expect. However, I would like  all plot to sit next to each other
   with a single label. Could anybody help?

   cheers

   Rich