[Rd] matplot.Date & matplot.POSIXct

[Abby Spurdle]

Maybe I'm missing something really obvious here, but I was unable to
create a matrix out of POSIXct object(s).
Perhaps that deserves a separate discussion...?

Regarding your other comments/questions:
(1) You should *NOT* mask functions from the graphics package (or
base, stats, etc), except possibly for personal use.
(2) The xlab and ylab are fine.


B.