Reid, I assume 1) You don't care if polygons are reused to form your new sets 2) You don't care how many polygons are in each set. 3) You also are not looking for all possible permutations - just a random set of answers that solve your equation?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Reid Priedhorsky Sent: Wednesday, October 01, 2008 6:35 PM To: PostGIS Users Discussion Subject: [postgis-users] "summing" (polygon, float) pairs Dear all, I have a set of polygons. Associated with each polygon is a number; call it score. Each polygon can intersect with zero or more other polygons. What I would like to compute is a set of non-intersecting polygons with summed scores -- each of these polygons would be a set of points where the sum of all the original polygons' scores covered by the result polygon are equal. Here's an example in one dimension: Input: ----3------ ----1---- ----4---- ----2---- Output: --3-- -4- -8- -5- -4- ----2----- It is OK if two adjacent result polygons have equal sums. Can this be done in PostGIS? Reid p.s. thanks for the help on my question a few days ago! I felt a tad foolish after learning it was just a missing isvalid() constraint. I thought I had one but didn't look carefully enough. _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users ----------------------------------------- The substance of this message, including any attachments, may be confidential, legally privileged and/or exempt from disclosure pursuant to Massachusetts law. It is intended solely for the addressee. If you received this in error, please contact the sender and delete the material from any computer. _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
