May I add one more request?

I frequently find myself "tweeking" a graph, getting it ready for a slide or a paper etc.  This usually involves re-running non-trivial chunks of R after various edits etc.

Could there be a cousin to eval-function that looked backwards for a "pdf(…)" command [or jpeg etc, a command that opens a graphics device] and then forward to a "dev.off()", and then executed the R command in the enclosed region?

Thanks

— Simon Jackman

Simon Jackman, Depts of Political Science & (by courtesy) Statistics, 
Stanford University, Stanford, CA 94305-6044, USA.
http://jackman.stanford.edu





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