On Thu, 2006-08-03 at 07:46 -0700, Michael Jerosch-Herold wrote: > I have data for several rings of a left heart chamber, and which I > would like to display in concentric rings, with color-encoding of the > values. Each ring corresponds to one slice through the heart, and the > rings correspond to positions from the base to the apex of the heart > as you move from the outermost ring to the innermost one. The data > have a circular pattern. These types of displays are referred to as > bullseye displays in the nuclear medicine literature. Does any reader > of these messages know of a R function/package that offers this > functionality? > > Also I noticed that in some contexts you can define a "circular" > attribute for your data. Are there plot routines for such "circular" > data? > > thank you! > > Michael Jerosch-Herold
You might want to take a look at the 'circular' or 'CircStats' packages on CRAN: http://cran.us.r-project.org/src/contrib/Descriptions/circular.html http://cran.us.r-project.org/src/contrib/Descriptions/CircStats.html There are some examples of plots generated using the packages in the R Graphics Gallery here: http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=121 http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=97 HTH, Marc Schwartz ______________________________________________ R-help@stat.math.ethz.ch 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.