[R] Examples of multiple key grobs

[Patrick Connolly]

The xyplot help page gives quite a lot of information how to use key
and indicates that legend needs to be used if multiple keys are
needed.  However, it gives only a brief description of what the grob
needs to contain to do multiple keys.

 I've only used the occasional grid function in panel functions, so I
don't have much of a sense of how grobs are constructed.  I've been
unable to find examples of code used to do multiple keys and would
appreciate being pointed in the direction of some.

TIA

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