On 5/14/2007 7:45 AM, Ener Borg wrote: > I have been searching for the R manual, unable to solve my problem. > > Questions > > 1) How can I put the x axis at the top of the plot?
To stop it from being at the bottom: axes=FALSE in the plot() call. To draw the box: box() To draw an axis on the left: axis(2). To draw an axis on the top: axis(3). > > 2) I am plotting data from a CTD. I want to add series sal, obs and fluo > at the same plot by using points(sal,deepth) ets. The data have > different values so I want to use multiple x axis (4) with different > scaling. How can I do that? The axis() function has a variety of arguments to let you place multiple axes on one plot. You'll need to do the rescaling of the data to a common scale yourself, then convert the desired tickmarks (which you may have obtained from the pretty() function) to that scale. For example, x1 <- rnorm(10, mean=10) x2 <- rnorm(10, mean=100, sd=10) x2adj <- x2/10 y <- rnorm(10) plot(x1, y, xlim=range(c(x1,x2adj)), pch="1", axes=F) box() axis(2) ticks <- pretty(x1) axis(1, at=ticks) points(x2adj, y, pch="2") ticks <- pretty(x2) axis(3, at=ticks/10, labels=ticks) mtext("x2", side=3, line=3) > > plot(sal,depth,ylim=c(100,0),xlim=c(-0.0120,62),type="l",col.axis="",xaxt="s",xlab="") > points(temp,depth,type="l",col="red") > points(obs,depth,type="l",col="green") > points(fluo,depth,type="l",col="blue") > > Thank you for any help! > > Ener Borg > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.