R help - Nov 2003 - y label after axis (4)

Hi,

I am trying to figure out how to lable the second y-axis after the following 
codes:

plot(x, y,
	xlab="time",
	ylab="pay1"
	)
par(new=TRUE)
plot(x,y2,
	ann=FALSE,
	xaxt="n",
	yaxt="n",
	pch=7
	)
axis(4)

Then, I want to label the second y axis "pay2".  I tried
"title(ylab="pay2")",
but it put this lable on the first y-axis.  Does anyone know how to move this 
to the second y-axis?

Thank you
Soyoko

______________________________________
Ms. Soyoko Umeno
Graduate Research Assitant for the Illinois-Missouri Biotechnology Alliance
(IMBA) at http://www.imba.missouri.edu/
Ph.D. Student at the Department of Agricultural and Consumer Economics
at the University of Illinois at Urbana-Champaign
Office Phone: 217-333-3417 or 217-333-0364
Fax: 217-244-4817
Mailing Address: 1301 W. Gregory Dr. MC710, Urbana, IL 61801

Hi,

On Fri, 7 Nov 2003, umeno wrote:
> Then, I want to label the second y axis "pay2".  I tried
"title(ylab="pay2")",
> but it put this lable on the first y-axis.  Does anyone know how to move
this
> to the second y-axis?
?mtext will do what you want.

For example, here is a few codes from Venables and Ripley 2002 "Modern 
Applied Statistics with S", Chapter 8.1:
  library(MASS)
  attach(wtloss)
  # alter margin 4; others are default
  oldpar <- par(mar = c(5.1, 4.1, 4.1, 4.1))
  plot(Days, Weight, type = "p", ylab = "Weight (kg)")
  Wt.lbs <- pretty(range(Weight*2.205))
  axis(side = 4, at = Wt.lbs/2.205, lab = Wt.lbs, srt = 90)
  mtext("Weight (lb)", side = 4, line = 3)
  par(oldpar) # restore settings
  detach()

Note that you can also get the above codes from 
$R_HOME/library/MASS/scripts/ch08.R.




-- 
Cheers,

Kevin

---------------------------------------------------------------
Ko-Kang Kevin Wang
Master of Science (MSc) Student
SLC Tutor and Lab Demonstrator
Department of Statistics
University of Auckland
New Zealand
Homepage: http://www.stat.auckland.ac.nz/~kwan022
Ph: 373-7599
    x88475 (City)
    x88480 (Tamaki)