barchart(yield ~ year, data = barley, stack=TRUE, col="black", ylim=c(0,85), scales=list(x=list(labels=c(expression(atop(March, 1932)), expression(atop(April, 1932))))) )
This gets most of what you want. [[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.