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More Projection Goodness <ul><li>EPSG (European Using PostGIS To Add Some Spatial Flavor To Your Application

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More Projection Goodness EPSG (European Petroleum Survey Group) has a number for most projections and datum combinations deCarta, and those other no names, expect geographic coordinates with WGS84 datum EPSG:4326 Geographic coordinates system with WGS84 datum. Degrees are not constant distance as you move North and South Not very accurate for distance and area calcs except over small areas You want to use projected layers (or project on the fly) for area and distance calcs

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