[R] Margin on trellis plot

Richard.Cotton at hsl.gov.uk Richard.Cotton at hsl.gov.uk
Mon Oct 6 13:51:49 CEST 2008

> I have a problem when I make a trellis plot - I would like to reduce
> the white margin surrounding the plot.
> I used S some years age, as I remember it was possible to use the 
> "par" and "oma" to control margin size even on a trelllis plot (see 
> the plot below).
> However, it does not seem to work in R.

par is used with base graphics.  Changing the par settings will not 
usually affect grid/lattice graphics.  See ?trellis.par.set and, for 
example, http://www.ats.ucla.edu/stat/Splus/faq/trellis_pars.htm or "R 
Graphics",chapter 4, by Paul Murrell.

In the code below, pick any number less than 1 for the padding values to 
decrease it from the default.

xyplot(conc ~ Time | Subject, 
   data = Theoph,
      layout.widths=list(left.padding=0, right.padding=0), 
      layout.heights=list(top.padding=0, bottom.padding=0)))


Mathematical Sciences Unit


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