[R] persp() and character labels for axis

[Uwe Ligges]

Thomas Steiner wrote:

> I want to plot dates on the y-axis of a persp() plot.
> 
> persp(x=1:30,y=days,y=yields)
> axis(2, 1:5, LETTERS[1:5])
> 
> does not work. On the mailinglist I found old messages, that said,
> that text() does not apply (yet) for 3-d plots. And the same question

?persp points you to ?trans3d which is useful to calculate coordinates 
for calls to 2D functions such as text().

Uwe Ligges

> ( http://www.r-project.org/nocvs/mail/r-help/2002/9009.html ) was not
> answered. Perhaps this time? ;)
> 
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