Armin Gemperli <Armin.Gemperli@UNIBAS.CH> wrote: > I wonder if somebody has a macro (or example program) to calculate > Voronoi tiles around a set of coordinate points in a plane. Ideally the > calculated tesselation would be available as a annotated dataset with > either polygones (POLYCONT) or piecewise straight segments (DRAW). The > solution is preferred not to need IML.

Unfortunately, you'll probably have to search the web for Voronoi polygon algorithms, in something like C, and then convert. Or else re-state your problem, so that you can go another route. Are you just trying to generate a map, or are you trying to set up a graph theory problem?

> The same question to SAS-L was asked in Oct.2000 by Lars Wichman, > without any responses.

Now you know why. But it's nice to see someone's checking the archives before asking.

> I just hope, I don't have to program this myself...

Sorry,

David -- David Cassell, CSC Cassell.David@epa.gov Senior computing specialist mathematical statistician