Sorry, but now I understand what you're doing, and it works as a stand-alone in the console! :)
But why doesn't it work in the xlim? ______________________________________________________________________________ > pheno.dt$year[1] [1] 1877 > pheno.dt$year[nrow(pheno.dt)] [1] 1916 > plot(x,y, xlim = c(pheno.dt$year[1]:pheno.dt$year[nrow(pheno.dt)]), ylim = > 50:150, xlab = "Year", ylab = "Julian Day") Error in plot.window(...) : invalid 'xlim' value Calls: plot -> plot.default -> localWindow -> plot.window ______________________________________________________________________________ -- View this message in context: http://r.789695.n4.nabble.com/referencing-last-row-in-a-column-tp2551645p2551712.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.