Daniel:

I wondered if that might be what you meant ...

To amplify a bit on David's response, the answer is that you do **not**
have separate control over the line width of characters -- lwd controls the
width of lines in a graph (exactly as it does in base graphics! ), so you
misunderstood the lwd parameter in the first place. The "cex" parameter
controls the overall size of plotting characters (and text), so that
incidentally affects the thickness of lines in character rendering. To get
different line thicknesses without changing the overall size, you need to
use different characters, fonts (e.g. bold), or font families, for which
details can be found on the gpar man page, as David said. Note that some of
this may also be device and system dependent,

Cheers,
Bert


On Thu, Sep 5, 2013 at 4:52 AM, Daniel Hornung <daniel.horn...@ds.mpg.de>wrote:

> On Thursday, September 05, 2013 13:40:00 David Winsemius wrote:
> > >>> can it be that xyplot does not support the lwd argument?
> >
> > The lattice plotting system uses the grid plotting engine and does
> > accepts some base  par-type arguments but not all. You may need to
> > read more about lattice and grid:
> >
> > ?lattice
> > ?trellis.par.set
> > require(grid)
> > ?gpar
>
> Thanks for the hint, I will look further into this direction.
>
> Daniel
>
> --
> Max-Planck-Institute for Dynamics and Self-Organization
> Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity
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>
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm

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