Your data set is not reproducible from an image (use dput() on your next post to give us a taste of your data) but I'll hazard it's a ts class object. If so, try this:
X <- ts( sample(500, 204), frequency = 12, start = 1995) plot( rep(1:12, 17), X, col = rep(1:17, each = 12), xaxt = "n", xlab = "Months", pch = 20) axis(1, at = 1:12, label = month.abb, padj = 0) legend("bottom", pch = 20, col = 1:17, label = 1995:2011, horiz = TRUE) as a start. You can add the grid lines with (among others) the abline function's h argument. Michael On Mon, Dec 5, 2011 at 5:58 PM, crazedruff <smoochie3...@gmail.com> wrote: > Hi, > > I have a dataset which includes monthly data for 17 years. I want to be able > to see the monthly data behavior for the period of all 17 years. > > What my data looks like: > > http://r.789695.n4.nabble.com/file/n4162534/data.jpg > > I would like to represent the data in a graph such as the one below: > > http://r.789695.n4.nabble.com/file/n4162534/Untitled-2.jpg > > Any help would be appreciated. > > Thanks! > > -- > View this message in context: > http://r.789695.n4.nabble.com/Plotting-Time-Series-Data-by-Month-tp4162534p4162534.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. ______________________________________________ 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.