RE: A Data Reduction Proposal

[Chris Albertson <chrisalbertson90278@yahoo.com>]

I tried that a while back and got very poor performance and
gave up.  That was usiing Postgresql 6.x  How fast are you
matches going?  What size data sets and could you describe the
computer you use?

This is really the best way to go if it works for TASS Mk IV
sized data but it was taking _days_ with Mk III data so I did
it in pure "C".



--- "Creager, Robert S" <CreagRS@LOUISVILLE.STORTEK.COM> wrote:
> 
> If anyone is interested, I have some Perl/SQL (PostgreSQL) which does
> #5 in
> Tom's list below for a single radius (.004 degrees is what I
> currently use
> along with at least 10 measurements).  Basically, all the radius
> matching is
> accomplished using PostgreSQL's circle_contain_pt and using a
> bounding box
> around the circle to gain index usage to minimize the stars to
> search.


=====
Chris Albertson 
  Home:   310-376-1029  chrisalbertson90278@yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson@aero.org

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