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

Patrick Connolly p.connolly at hortresearch.co.nz
Wed Jan 15 04:21:03 CET 2003

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

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


Patrick Connolly
Mt Albert
New Zealand 
Ph: +64-9 815 4200 x 7188
I have the world`s largest collection of seashells. I keep it on all
the beaches of the world ... Perhaps you`ve seen it.  ---Steven Wright 

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