On Tue, 18 Jul 2006, Don MacQueen wrote: > I'll suggest going to the CRAN packages page and doing a search for "voronoi".
The problem here is that `Voronoi tessellation' is a secondary name. The concept has many names, including Dirichlet tessellation and Thiessen polygons, and Dirichlet has priority over Voronoi. > Also, search for 'triangulation', since that is one of the uses of them. I know of packages deldir, tripack and perhaps geometry. > -Don > > At 11:46 PM -0400 7/18/06, zubin wrote: > >Hello, looking to draw a voronoi tessellations in R - can anyone > >recommend a package that has tackled this? > > > >some background: > > > >i have a economic data set and created a sammons projection, like to now > >overlay a voronoi tessellation over the sammons 2-D solution for a slick > >visual, and potentially color each tessellation element based on a metric. > > > >home.u <- unique(home1) > >home.dist <- dist(home.u) > >home.sam <- sammon(home.dist,k=2) > >plot(home.sam$points) Wait a minute. If this is sammon() from MASS (uncredited), it is not a projection, and there is no relevant concept of distance between points in the mapped space apart from between the supplied points. I suggest Zubin reads carefully the reference whose support software he appears to be using. (It would also have answered his question.) -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [email protected] 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.
