Wasn't it GoogleAPI_FTW who wrote:
>
>** Address level accuracy. vs Street level accuracy. Er, does anyone
>know what the difference is? (maybe explain with some address
>examples)

Address level accuracy is when the geocoder has enough information to 
interpolate where the property might be on the street. E.g.
   177 Devonshire Road, Blackpool
175 and 179 are located at sensible distances nearby

Street level accuracy is when the geocoder can find the street, but has 
no idea where the property is on that street. E.g.
   178 Devonshire Road, Blackpool
The returned address is "Devonshire Rd, Blackpool, UK" and the returned 
location is half way along the length of the street, quite a long way 
from 174 and 180.

Property level accuracy looks similar to address level accuracy, except 
that the geocoder has an actual entry for the individual property in its 
database. E.g.
   Devonshire Road Hospital, Blackpool

-- 
http://econym.org.uk/gmap
The Blackpool Community Church Javascript Team


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