[postgis-users] Potential use of PostGIS for retrieving nearest neighbor vectors

[ranzilca at ieee.org]

Hello all,

 

I am looking for a tool that will allow a postgres db to perform the
following function:

 

Based on a reference vector/array of continuous values, retrieve the closest
vectors in the database (e.g. in Euclidean distance).

 

I came across PosGIS, and was wondering id we can use it for this purpose.
Specifically, the function **pgr_raster_to_points** seems like it is
performing some sort of Nearest Neighbor search:

http://postgis.com/support/wiki/index.php?PgRasterSqlInterface

 

I am not familiar with GIS systems, and we plan to use it for a different
purpose (as explained above), but was hoping we can use the aforementioned
function in this manner.

 

Thank you in advance for your help!

 

-- Ran

 

 

Ran Zilca

ran at signalmatch.com

 <http://www.SignalMatch.com> www.SignalMatch.com

 

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