developerWorks has posted a lengthy and detailed article
on the implementation of spatial searches with the Lucene and Solr libraries. "I'll start with a brief review of some key Lucene concepts, leaving the deeper details to the reader to research. Next, I'll cover some of the basic concepts of geospatial search. GIS is a large field that could easily consume this entire article and many more, so I will instead focus on some basic concepts that should be fairly intuitive given the need to find services, people, and other items of interest on a daily basis. I'll round out the article with some discussion of the approaches available for indexing and searching spatial information using Lucene and Solr. I'll ground these concepts in a real, albeit simple, example using data from the OpenStreetMap (OSM) project.
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