Hi, I'd like to draw a lattice barchart of means with error bars to show the standard deviation. I have the barchart, how do I add the error bars?
require(datasets) require(lattice) x <- aggregate(weight ~ Diet, ChickWeight, function(x) c(mean=mean(x), sd=sd(x))) barchart(weight[,'mean'] ~ Diet, x) Thanks, Shaun ______________________________________________ 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.
