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.
