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@@ -409,6 +409,12 @@ If you need to sort things post-query, you can do so:
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 Obviously, each of the items in the array must have a latitude/longitude so
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 they can be sorted by distance.
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+Database Compatability
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+=================================================================================
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+GeoKit does *not* work with SQLite, as it lacks the necessary geometry functions. 
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+GeoKit works with MySQL (tested with version 5.0.41) or PostgreSQL (tested with version 8.2.6)
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+GeoKit is known to *not* work with Postgres <8.1 -- it uses the least() funciton.
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+
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 HIGH-LEVEL NOTES ON WHAT'S WHERE
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 =================================================================================

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@@ -4,6 +4,6 @@ author:
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   name_2: Andre Lewis
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   homepage_2: http://www.earthcode.com
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 summary: Geo distance calculations, distance calculation query support, geocoding for physical and ip addresses.
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-version: 1.0
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+version: 1.0.1
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 rails_version: 1.0+
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 license: MIT
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\ No newline at end of file

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@@ -380,15 +380,15 @@ module GeoKit
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           case connection.adapter_name.downcase
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           when "mysql"
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             sql=<<-SQL_END 
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-                  (ACOS(COS(#{lat})*COS(#{lng})*COS(RADIANS(#{qualified_lat_column_name}))*COS(RADIANS(#{qualified_lng_column_name}))+
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+                  (ACOS(least(1,COS(#{lat})*COS(#{lng})*COS(RADIANS(#{qualified_lat_column_name}))*COS(RADIANS(#{qualified_lng_column_name}))+
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                   COS(#{lat})*SIN(#{lng})*COS(RADIANS(#{qualified_lat_column_name}))*SIN(RADIANS(#{qualified_lng_column_name}))+
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-                  SIN(#{lat})*SIN(RADIANS(#{qualified_lat_column_name})))*#{multiplier})
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+                  SIN(#{lat})*SIN(RADIANS(#{qualified_lat_column_name}))))*#{multiplier})
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                   SQL_END
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           when "postgresql"
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             sql=<<-SQL_END 
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-                  (ACOS(COS(#{lat})*COS(#{lng})*COS(RADIANS(#{qualified_lat_column_name}))*COS(RADIANS(#{qualified_lng_column_name}))+
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+                  (ACOS(least(1,COS(#{lat})*COS(#{lng})*COS(RADIANS(#{qualified_lat_column_name}))*COS(RADIANS(#{qualified_lng_column_name}))+
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                   COS(#{lat})*SIN(#{lng})*COS(RADIANS(#{qualified_lat_column_name}))*SIN(RADIANS(#{qualified_lng_column_name}))+
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-                  SIN(#{lat})*SIN(RADIANS(#{qualified_lat_column_name})))*#{multiplier})
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+                  SIN(#{lat})*SIN(RADIANS(#{qualified_lat_column_name}))))*#{multiplier})
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                   SQL_END
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           else
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             sql = "unhandled #{connection.adapter_name.downcase} adapter"

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@@ -176,7 +176,8 @@ module GeoKit
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           res.street_address = doc.elements['//ThoroughfareName'].text if doc.elements['//ThoroughfareName']
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           # Translate accuracy into Yahoo-style token address, street, zip, zip+4, city, state, country
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           # For Google, 1=low accuracy, 8=high accuracy
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-          address_details=doc.elements['//AddressDetails','urn:oasis:names:tc:ciq:xsdschema:xAL:2.0']
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+          # old way -- address_details=doc.elements['//AddressDetails','urn:oasis:names:tc:ciq:xsdschema:xAL:2.0']
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+          address_details=doc.elements['//*[local-name() = "AddressDetails"]']
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           accuracy = address_details ? address_details.attributes['Accuracy'].to_i : 0
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           res.precision=%w{unknown country state state city zip zip+4 street address}[accuracy]
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           res.success=true