Tim, we have this in our TODO http://www.sai.msu.su/~megera/wiki/TODO Current interface doesn't allow tree navigation. We're looking for sponsorships of this project. Oleg On Fri, 4 Apr 2008, Tim Keitt wrote:
I was wondering if there is a way to get access to the tree structure underlying at GIST index? What I would like to do is perform a breadth-first search on the tree in order to find nearest neighbors (using PostGIS data types). Nearest neighbor searchers are not very efficient using only range queries as it is not known a priori how large a range to sample. Searching the tree is very fast as the tree encode spatial proximity. Is there an API (backend C-level is fine) to access a GIST index? THK
Regards, Oleg _____________________________________________________________ Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru), Sternberg Astronomical Institute, Moscow University, Russia Internet: oleg@xxxxxxxxxx, http://www.sai.msu.su/~megera/ phone: +007(495)939-16-83, +007(495)939-23-83
