[Zope] searching by miles from __ zip code----updated to:
getting list of zip codes in x miles radius
12 Jun 2003 13:44:33 -0700
On Thu, 2003-06-12 at 12:23, Sean Kelley wrote:
> Thanks for the thought on this. I realized that what I really need is
> a return of all of the zip codes within x miles of a zip code. In
> other words, show me all records (from zcatalog or sql) which match
> the results of a radius search where zip codes in the radius are
This could be decently approximated by finding all the POs that are
about double the search distance from the target PO. That should do a
fair job of estimating which neighbor zips your radius would probably
include. Then use the selected zip codes as a filter for your next
This is, of course, assuming you're not planning on going to the bother
of actually finding with where the *real* zip code borders are.
Again, this isn't probably the *correct* solution, but it may prove
useful enough for your purposes.