graphics to clipboard

Hi,

I would like to export a plot from R by copying it as a pdf to the  
clipboard (in OS X), while running in batch mode.  The idea would be  
to wrap R's graphing capabilities in a simple GUI, which would grab  
the result from the clipboard and display it in an NSView.  I could  
use a temporary file on disk, but that seems not so elegant.

Thanks,

Tom Elliott