Will, http://www.sconsig.com/sastips/tip00156.htm
This is an example I used written in SAS code which should be able to convert to another language - to find all zipcodes within a certain radius. HTH, Chuck P. Charles Patridge Full Capture Solutions, Inc. 333 Roberts Street, Suite 400 East Hartford, CT 06108 Phone: 860-291-9517 x 106 Email: [EMAIL PROTECTED] -----Original Message----- From: Will Johnson [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 29, 2007 11:46 AM To: java-user@lucene.apache.org Subject: Re: Postal Code Radius Search a CustomScoreQuery combined with a FieldCacheSource that holds the the lat/lon might work. - will On Aug 29, 2007, at 11:15 AM, Mike wrote: > I've searched the mailing list archives, the web, read the FAQ, etc > and I > don't see anything relevant so here it goes... > > I'm trying to implement a radius based searching based on zip/ > postal codes. > (The user enters their zip code and I show nearby matches under x > miles > away sorted by linear distance.) I already have the data required > to pull > this off (zip codes, long/lat coordinates, etc.) Extreme accuracy > is not a > requirement. It just needs to be an approximation (plus or minus a > few > miles.) > > What I'm looking for is a little direction. How have others > implemented > this type of search? What are the pros/cons of various methods? I > have a > few ideas but obviously none of them are very good or I guess I > wouldn't be > here asking. ;) > > By the way, my index is updated about every 10 minutes and holds about > 25,000 records. However, this may increase in the next year or so to > hundreds of thousands. So whatever I do needs to be fairly > scalable. The > items being searched as well as the people searching will be > located all > over the world. Some areas may be busier than others so there is an > opportunity for caching more common locals. > > Thank you for your time. I'd appreciate any suggestions that you > can give. > > - Mike --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
