Hi, I have a data set of several hundred thousand points. Each point is saved as a three dimensional coordinate, i.e. (x, y, z). What I'd like to do is given a point in that space, get a list of all of the points in the table within some radius. I'm familiar with the q3c package that does this for points that lie on a sphere, but is there something comparable for radial searches on 3D cartesian points? Speed is definitely an issue given the number of points I have. Thanks for any suggestions! Cheers, Demitri -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general