On Wed, Mar 28, 2012 at 11:02 AM, Eik Vettorazzi <e.vettora...@uke.de> wrote: > Hi Alan, > on an UTF-8 locale you can use \u25D6 and \u25D7, but you have to plot > group a=4 twice.
The problem with that is that by default the two half-circles will be centred on the point location, so won't join look like a whole circle. I'm not sure how you can adjust the point precisely to make the two symbols line up. If you use another of the unicode symbols with the text() plotting function you can do it. The symbols are half-coloured, half transparent so you can overlay them thus: > plot(1:10,type="n") > text(1:10,1:10,"\u25D0",col="red",cex=4) > text(1:10,1:10,"\u25D0",col="blue",srt=180,cex=4) the only problem is then a slight outline of the second colour. I tried to fix that by overplotting a unicode circle (25EF) but that is slightly larger than the other circles. Your font may vary.... -- blog: http://geospaced.blogspot.com/ web: http://www.maths.lancs.ac.uk/~rowlings web: http://www.rowlingson.com/ twitter: http://twitter.com/geospacedman pics: http://www.flickr.com/photos/spacedman ______________________________________________ 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.
