Can't anybody give me a hint on how to solve this? I even bought the ggplot2-book, so you could also give a page (or a series of pages).
Thanks, Eric On Thu, Feb 17, 2011 at 10:19 AM, Eric Fail <eric.f...@gmx.com> wrote: > > Dear R-list > > I'm working with with geom_errorbar; specifically I'm trying to > reproduce the example Hadley Wickham have on > http://had.co.nz/ggplot2/geom_errorbar.html (all in the button of the > page) where he makes an nice plot with errorbars and then draw lines > between the points. > > What confuses me is the 'limits' he defines for the errorbars from the > se variable. > > First he creates a dataset, > > df <- data.frame( > trt = factor(c(1, 1, 2, 2)), > resp = c(1, 5, 3, 4), > group = factor(c(1, 2, 1, 2)), > se = c(0.1, 0.3, 0.3, 0.2) > ) > > # library(ggplot2) > > and then he creates some limits from the se variables. > > limits <- aes(ymax = resp + se, ymin=resp - se) > > [elements omitted] > > # and then he creates the plot (I'm interested in). > > p <- ggplot(df, aes(colour=group, y=resp, x=trt)) > p + geom_line(aes(group=group)) + geom_errorbar(limits, width=0.2) > > I can (of course) get Hadley's example to run, but I can't do it on my > data as I don't have a 'se' variable/don't know how to create it. I > have a group variable, a treatment variable, and a response variable, > but no se variable. > > Could anyone out there explain how I create a 'se' variable in my data? > > I'm sure my reasoning is the one that is off, and not ggplot2 (I'm a big fan). > > Your help is appreciated! > > Thanks, > Eric ______________________________________________ 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.
