On Wed, May 14, 2008 at 3:13 PM, David Jantzen <[EMAIL PROTECTED]>
wrote:
How do I find the real SRID if it is?
No doubt there's a better way, but I search through the file
spatial_ref_sys.sql that comes with PostGIS to find the description
that matches the information provided with the data.
Unfortunately geographic coordinate data (lat/long) is often
published without a reference to its datum (underlying model of the
Earth). If it comes out of a GPS it's probably WGS84, but this is
only one of many "standards" that you might encounter (NAD83 and
NAD27 are also common in the U.S.).
-- Andy
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