Map of the Market
Another place to look, with an open-source java implementation, is: http://www.cs.umd.edu/hcil/treemap/ This has proven to be very useful for portfolio visualization. pcc
On Wednesday 07 June 2006 09:28, BBands wrote:
On 6/7/06, Kyle Campbell <Kyle.W.Campbell at williams.edu> wrote:
Hello all, I am trying to design an R function to display the Map of Market graphic for a given portfolio of stocks (something like this, though not so interactive: http://www.smartmoney.com/marketmap/ ). Does anyone know a good algorithm I could use for positioning the different rectangles once I know the relative area that each one should occupy? Any help on this, or any other suggestions for this project would be much appreciated.
This is a tiling problem a very interesting area. (It is actually a nested tiling problem.) Long a source of interesting mathematical diversions, tiling was examined on several occasions by Martin Gardiner in his Mathematical Recreations column in Scientific American. I couldn't find much in R at present, but here is a link to a site that should get you started. http://www.ics.uci.edu/~eppstein/junkyard/tiling.html Implementation in R ought to be pretty straight forward. Have fun, jab
Peter Carl 145 Scottswood Rd Riverside, IL 60546