Hi Tony,
I would think the first step would be to find a web service or dataset
to convert a zip code to longitude/latitude.
The formula for calculating distances from long/lat is available here:
http://www.colorado.edu/geography/gcraft/warmup/aquifer/html/distance.html
Cheers,
David Grant
I'm helping a friend of mine build a matchmaking website, and
we have a
doozy of a problem to solve:
What I need to do is two fold:
#1 Collect whatever geographical information I need from each
user to enable
#2
#2 Be able to run query's to find people NEAR (geographically) another
Does anyone know of any commercial or free implementations of
this? Is it
primarily a database problem or is their some way (computationally) to
compute the probable proximity of two zip codes?
There is a class called zipLocator. I think I found it at
phpclasses.org. It uses a large
On 21 Nov 2005, at 14:14, Tony Di Croce wrote:
Does anyone know of any commercial or free implementations of this?
Is it
primarily a database problem or is their some way (computationally) to
compute the probable proximity of two zip codes?
All the suggested packages could be all you need,
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