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Vertical text in a plot

4 messages · Marcin Kozak, Peter Dalgaard, Gabor Grothendieck +1 more

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Hi,

Consider this simple plot:
I want to add an additional axis as
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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Marcin Kozak wrote:
mtext() is your friend....
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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:
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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: