[R] Vertical text in a plot

[Gabor Grothendieck]

There is an example in the example section of

library(zoo)
?plot.zoo

starting at:
 ## plot with left and right axes


On Dec 6, 2007 10:16 AM, Marcin Kozak <nyggus at gmail.com> wrote:
> Hi,
>
> Consider this simple plot:
> > plot(1:25,runif(25,0,1),ylab="First Y-axis label",xaxt="n")
>
> I want to add an additional axis as
> > axis(4,at=seq(0.2,1,.2), labels=1:5)
>
> I have no idea how to add now the title of the new axis as "Second
> Y-axis label". I want this text to be vertically directed from bottom
> to top. I can't find the function in text() to write vertically. Any
> ideas?
>
> Thanks,
> Marcin
>
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