On Wed, 2012-03-28 at 01:43 -0700, millerjeremya wrote: > I’m working on a canonical correspondence analysis using Vegan. > I’m new to this. I would like to control the shapes and colors for each of > my individual display points and can’t figure out the syntax.
This comes up so often it is /the/ FAQ (well one of them anyway). So much so I wrote a post on my blog showing how to do this. It changes the colour of the points but you can use the same ideas to change the plotting characters (via argument `pch`). http://ucfagls.wordpress.com/2012/04/11/customising-vegans-ordination-plots/ See if that helps you. G > Here is the script I am using. It comes from Numerical Ecology in R by > Bocard et al. > windows(title="CCA biplot - scaling 1", 9, 9) > plot(spe.cca, scaling=1, display=c("lc", "cn"), main="Biplot CCA spe ~ env - > scaling 1") > > I think I should be able to add points() and text() lines to change the > appearance of particular elements. I also will need to refer to one or more > specific points (e.g., make rows 1-4 a red circle, 5-8 a yellow triangle, > etc.; make V1 say “tree cover”, V2 say “altitude”, etc.; see attached file > CCA.jpeg). > > Many thanks! > > http://r.789695.n4.nabble.com/file/n4511704/CCA.jpeg > > -- > View this message in context: > http://r.789695.n4.nabble.com/customizing-plot-Vegan-CCA-tp4511704p4511704.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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ 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.
