[R] Why are default sizes of plotting characters different?

[Patrick Connolly]

I had occasion to use panel.superpose to draw points in a lattice
plot, and chose to set the size to 1.1 using trellis.par.set().  I
also wished to add some other plotting characters which I did with
grid.points.  To get them looking like the same size as those done
with panel.superpose, I needed to set the size to 0.8 using size =
unit(.8, "char").  Now they end up looking quite similar even if not
identical.

Evidently, the default values have different bases.  What is the
thinking behind those defaults?

thanks



-- 
Patrick Connolly
HortResearch
Mt Albert
Auckland
New Zealand 
Ph: +64-9 815 4200 x 7188
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