[R] if/else for plot/lines?
rlevy at ucsd.edu
Fri Dec 7 11:28:44 CET 2007
I'm interested in writing a function that constructs a new plot on the
current graphics device if no plot exists there yet, but adds lines to
the existing plot if a plot is already there. How can I do this? It
seems to me that the exists() function might be co-opted to do this, but
it's not obvious how.
Roger Levy Email: rlevy at ucsd.edu
Assistant Professor Phone: 858-534-7219
Department of Linguistics Fax: 858-534-4789
UC San Diego Web: http://ling.ucsd.edu/~rlevy
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