R help - Mar 2008 - Weighted histograms / distributions

Hi all,
   
  I'd be greatful for any assistance with these two problem I'm facing:
   
  1. How can I combine weighted.hist() and multhist() from the plotrix library
so that I can display two weighted histograms on the same chart ?  (if anyone is
familiar with a different library or function that already does that, that would
be great to know as well )
   
  2. How can I display weighted histograms or weighted distributions in a
lattice chart ? ( unfortunately, lattice's histogram() is unweighted ).
   
   
  Thanks very much!
  Dave.
   

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