Geo search in Leopard
High Earth Orbit explains how to do geographic queries with Leopard. Two things come in handy for this: 1. Spotlight stores information about lat/long in kMDItemLatitude and kMDItemLongitude. 2. With the appropriate Query Expression Syntax you can use the > and < operators to search for ranges. GeoSpotlight allows you to search without a box and add other Spotlight predicates to search by, say, keyword, title, city, time, etc.
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