implement rtree on postress : I want to implement Rtree with Postgres to fast query a two dimensional geographic data in double precision. I know Rtree was implemented in Postgres in old versions and was replaced by a more powerful module GIST. But I can't find any example of using GIST in postgres to create Rtree index.
For example, I have a table Points, which has three fields: point_id, X and Y and I want to use Postgres to quickly query point that a<x<b and c<y<d. How can I do that.
Thank you