On 3/17/06, Bruno Wolff III <bruno@wolff.to> wrote:
> Have you looked at using the Earth Distance contrib module? If a spherical
> model of the earth is suitable for your application, then it may work for you
> and might be easier than trying to create Gist indexes yourself.
earth distance = great stuff. If the maximum error is known then you
can just pad the distance and filter the result on the client if exact
precision is needed.
Merlin