BostonGIS is a testbed for GIS and Web Mapping solutions utilizing open source, freely available and/or open gis technologies. We will be using mostly Boston, Massachusetts data to provide mapping and spatial database examples.
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PostGIS in Action check out book and download the first chapter and SQL Primer for free.
PostgreSQL: Up and Running It covers PostgreSQL 8.4-9.2 with special focus on features introduced in PostgreSQL 9.1-9.2
This page is choke full of very short and useful google map api examples.
I especially like the Geodesic example that describes the new 2.84 google map api feature of drawing polylines that follow the great circle.
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