On Thu, Oct 9, 2008 at 2:29 PM, stephen sefick <[EMAIL PROTECTED]> wrote: > I am trying to figure out how to use ggplot2. I would like to do the below > with ggplot, but I can not figure out how. The data provided is a subset of > a much larger data set, but these data are the data necessary to make the > plot. I think I would rather have the colors become symbols, and I do know > how to do that in lattice, but here is a quick and dirty version. > thanks
Here's one way: pred <- data.frame(GPP = f, TSS = y) qplot(TSS, GPP, data=r, colour=RiverMile) + geom_line(data=pred, colour ="black") * ggplot2 works with data frames, so the key is to create one from your model predictions. Naming the variables to match the names of the model inputs makes sense, and saves some typing. * You no longer need to specify xlim because ggplot2 knows about everything you are plotting and can calculate the limits appropriately. * You have have to manually set the colour in geom_line to override the default mapping that you created between colour and RiverMile. Hadley -- http://had.co.nz/ ______________________________________________ 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.
