[postgis-users] hexagonal tessellation

[Daniel Ricard]

Hello all,
This might be a bit off-topic, but worth a try considering the wide readership 
of this list.

I'm interested in running an analysis that summarises geo-referenced data by 
obtaining aggregate metrics on an hexagonal tessellation. That is, something 
similar to S-Plus' "hexbin" tool which computes a metric for each hexagon on 
a tessallated surface.

Has anyone ever done something similar, or could point me to a good source on 
how to build an hexagon-based grid? It seems that it would be feasible to 
build the grid as a series of hexagons and then use the usual geometry and 
analytical functions to obtain things such as mean values and standard 
deviations for each hexagon.
Cheers,

Dan