[postgis-users] Quadgrid Recursive SQL Function - Now Available on Github

[Mark Wynter]

Hi everyone

I’ve been talking about sharing this code for some time - well here it is.   You can find the code on GitHub.

Here’s the write up

http://dimensionaledge.com/quadgrid-generation-using-recursive-sql-function/

The blog post includes a GIF animation that shows the recursive quadgrid in action, plus a 3D representation of Sydney’s population density.  

Quadgrids are not limited to underlying points.  You can use any value criteria, such as the length of line strings, if for say quadgridding a set of watercourses or roads.

Best regards
Mark