basically something along these lines: plot(Time, Resistance, bty='c') par(new=TRUE) plot(Time, Temperature, axes=FALSE, ylab='', xlab='') axis(4)
On 10/12/07, Keith Cox <[EMAIL PROTECTED]> wrote: > My data is the following: > > > > > Time > > Resistance > > Temperature > > > 5 > > 2000 > > 4 > > > 10 > > 2200 > > 8 > > > 15 > > 2500 > > 14 > > > 20 > > 2900 > > 20 > > > 25 > > 3000 > > 29 > > > 30 > > 3100 > > 38 > > > 35 > > 3500 > > 46 > > > 40 > > 3800 > > 47 > > > 45 > > 3900 > > 50 > > > 50 > > 4000 > > 51 > > > > I would like to create a scatter plot with Time on the x axis, Resistance on > the y axis and Temperature on a second y axis. > > > > I have tried > > Plot(Time,Resistance,ylim=range(0,4500) > > Points(Time,Temperature) > > Axis(side=4) > > > > But the temperature ends up as a straight line along the bottom. I also > tried > > plot(time, resistance, ylim=c(0,4500), col="black", type="b") points(time, > 4500/60 * temperature, col="green", type="b") axis(side=4, > at=4500/60*seq(0,60, by=10), labels=seq(0,60,by=10)) > > > > but that just scales temperature appropriately to match the Resistance and > does not plot off of a second y axis. I have many plots to create and need > resistance plotted on one y axis and Temperature plotted on the second. > > > > Thanks in advance, keith > > > > > > Marlin Keith Cox Ph.D. > > At-Sea Processor Professorship of Fisheries Biology > Science Chair > > Sheldon Jackson College > > Sitka, Alaska 99835 > > 907.747.5296 > > http://www.sheldonjackson.edu > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ R-help@r-project.org 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.
