On Thu, 4 Mar 2010 11:34:49 +1300 Rolf Turner <r.tur...@auckland.ac.nz> 
wrote:
> There are various ways to access components of a data frame:
> 
>       * plot(con$rel,con$len)
>       * plot(con[["rel"]],con[["len"]])
>       * plot(con[,"rel"],con[,"len"])
>       * with(con, plot(rel,len))

And: plot(len~rel, data=con)

-- 
Karl Ove Hufthammer

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