Re: Converting Addresses to/from Latitude/Longitude

> In my opinion if I have more results to compare, I will have more
> chances to get Geocoding Accuracy.

It doesn't work like that, it can only increase doubt.

It seems at first glance to be a good plan - get 5 results, if 4 agree
then take them as "accurate" and discard the odd one out.

What that doesn't take into account is where the data comes from. I
don't think any of the geocoding services create the data, they might
import it from "proper" map providers like TeleAtlas, from postal
services, or they might rely on users reading paper maps and typing it
in, or any combination of the above. The nature (and reliability) of
the sources usually varies by nation. Ultimately , many geocoder
services are derived from similar sources.

So given 5 results where 4 are derived from say some free-issue but
obsolete dataset and one from something more upto date and paid
for ... which is the more accurate now? Not possible to say,
especially when we have no idea what the sources involved are.

There are many more than 5 geocoders available, if you're looking for
an even wider consensus, but as said I'd have doubts about the
validity of that approach because of common datasets.
http://groups.google.com/group/google-maps-api/web/resources-non-google-geocoders

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