R Friends, I'm running R2.7.1 on Windows XP.
I'm trying to get some lattice functionality which I have not seen previously documented--I'd like to plot the exact same data in multiple panels but changing the grouping variable each time so that each panel highlights a different feature of the data set. The following code does exactly that with a simple and fabricated air quality data set. dataSet <- data.frame("Pollutant"=c(rep("Black Carbon",5),rep("PM10",5)), "Detector"=c(1:5,1:5), "Value"=c(seq(50,10,-10),seq(100,60,-10)), "Class"="Mass") xyplot( Value ~ Detector | Pollutant, data=dataSet, aspect = 1.0, subscripts=TRUE, panel = function(x,y,subscripts,...) { if(panel.number() == 1) panel.superpose(x=dataSet$Detector,y=dataSet$Value,1:nrow(dataSet),groups=dataSet$Pollutant); if(panel.number() == 2) panel.superpose(x=dataSet$Detector,y=dataSet$Value,1:nrow(dataSet),groups=normToEdge_dataSet$Class); } ) Although the panel labels indicate that only one type of pollutant is displayed in each, I've instead forced all of the data to be plotted in both. The first panel shows two colors, grouped by pollutant, the second shows one color, grouped by class. Here's where the problem comes, if I add an additional pollutant, instead defining the data set as follows: dataSet <- data.frame("Pollutant"=c(rep("Black Carbon",5),rep("PM10",5),"Ultrafines"), "Detector"=c(1:5,1:5,10),"Value"=c(seq(50,10,-10),seq(100,60,-10),75),"Class"=c(rep("Mass",10),"Count")) and rerun the same plotting script, I obtain three panels. The one labeled "Black Carbon" correctly displays all three pollutants in different colors. "PM10" however, displays all classes in one color when there should now be two. Additionally, I now obtain a panel entitled "Ultrafines" which I'd like to suppress. The actual data set has a number of different pollutants, so what I'd ideally like to do is arbitrarily define two panels with different grouping variables. I've tried to set up dummy groups and to condition on those, but with no luck. I think what I need to do is possible with viewports, but is there no way to entice lattice to function in this way? Any help would be appreciated. cheers, Alex Karner Department of Civil and Environmental Engineering University of California, Davis [[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.