I'm looking for the best workflow for mapping postcodes and calculated territories, but being relatively new to mapping I'm struggling on a few details and also the best practices for displaying these maps via a browser.
I have access to the Code-Point Open postcode data from Ordnance Survey and my intention is to generate layers based on this data based on a series of dissolving aggregations (Postcode Sector into Group1 into Group2 into Group3) etc.
I think I need to aggregate this data in each level using Voronoi regions - what I don't understand is whether I need to generate polygons or can draw these polygons in a live manner?
I have access to Windows (WAMP) and Red Hat 6 (LAMP+PostGres+PostGis) - where can I find out more about generating voronoi and the advantages/disadvantages of pre-rendered polygons?
On a side note, our regions change quarterly and so for all but the lowest level this data will need recalibrating 4 times a year - we would probably regroup postcode sectors at the same time (as Code-Point is also updated quarterly and well, we might as well update everything).