library(ggplot2) melt.updn <- (structure(list(date = structure(c(11808, 11869, 11961, 11992, 12084, 12173, 12265, 12418, 12600, 12631, 12753, 12996, 13057, 13149, 11808, 11869, 11961, 11992, 12084, 12173, 12265, 12418, 12600, 12631, 12753, 12996, 13057, 13149), class = "Date"), site = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("unrestored", "restored"), class = "factor"), value = c(1.10799962473684, 0.732152347032395, 0.410438861475827, 0.458941230025228, 0.429883166858706, 0.831083728521569, 0.601942073736539, 0.81855597155132, 1.12612228239269, 0.246006569972335, 0.940239233910111, 0.98645360143702, 0.291191536260016, 0.346271105079473, 1.36216149279675, 0.878585508942967, 0.525184260519839, 0.803247305232454, 1.08086182748669, 1.24915815325761, 0.971046497346528, 0.936835411801682, 1.26957337598606, 0.337691543740682, 0.90931142298893, 0.950891472223867, 0.290354002109368, 0.426509990013021)), .Names = c("date", "site", "value"), row.names = c(NA, -28L), class = "data.frame"))
#I would also like to add tick marks to this graph is possible with no label for the months in between the years qplot(date, value, data=melt.updn, shape=site, ylab="Distance" ,main="Euclidean Distances Time Series", xlim=c(as.Date("2002-1-1"), as.Date("2006-3-1")))+geom_line()+theme_bw()+geom_vline(x=as.numeric(as.Date("2002-11-01"))) + opts(panel.grid.major = theme_line(colour="grey", size=0.75), panel.grid.minor=theme_line(colour="grey", size=0.25)) thanks -- Stephen Sefick Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods. We are mammals, and have not exhausted the annoying little problems of being mammals. -K. Mullis ______________________________________________ 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.