> I create a boxplot but the names are too longs and i cant see them
> complete.

  If you're referring to labels on the x-axis, Jose, I'll
sometimes rotate them and increase the bottom margin:

  # Increase bottom margin by 0.1
  par(omd=c(0,1,0.1,1))
  boxplot(...)
  # Add perpendicular labels
  axis(1, at=1:length(labels), labels=labels, las=2)

  For another strategy, see "Kickstarting R: Text in the
margins."*

Best, Peter

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* http://cran.r-project.org/doc/contrib/Lemon-kickstart/kr_mtext.html

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