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
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