Re: [R] bullseye or polar display of circular data

2006-08-04 Thread Jim Lemon
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?
 
I'm not quite sure that I understand the display you want, but 
radial.plot in the plotrix package might do what you want. Also you 
could check the circular and CircStats packages.

Jim

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[R] bullseye or polar display of circular data

2006-08-03 Thread Michael Jerosch-Herold

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

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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


Re: [R] bullseye or polar display of circular data

2006-08-03 Thread Marc Schwartz (via MN)
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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