[Rd] More plotting comments

[Paul Murrell]

hi


> Another tiny thing, is there an official way to put angles or temperature
> on a graph? I have been using expression(90^o) for a 90 degree angle which
> looks OK but kind of cheats the philosophy of the expression system.
> Does anything matter other than how it looks when it prints?


try ...
    expression(90*degree)

also, for angles, there are ...
    expression(60*minute)
    expression(30*second)

the documentation for mathematical annotation (in 0.99.0) is quite out of
date, but it will be updated for 1.0.0

paul





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