[R] Vertical text in a plot

[John Kane]

op <- par(mar=(c(5, 4, 4, 4) + 0.1)) 
plot(1:25,runif(25,0,1),ylab="First Y-axis
label",xaxt="n")
axis(4,at=seq(0.2,1,.2), labels=1:5)
mtext("Second  Y-axis label",side=4, line=2)
par(op) 
--- 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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