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I have a huge set of data that contains inconsistencies in the way that the site addresses were plotted. For instance, a single address may have 6 occurrences of identical addresses (I am interested in keeping all occurrences of an address), but all 6 identical addresses might have their own lat/long that are anywhere between 10-100 feet apart from each other.

I need a way to unify multiple identical listings in small random sample areas of the data as they are needed, while I geocode the entire data set on the side. My current plan is to also geocode the sample areas, but I wanted to see if there was a more elegant solution out there.

I am using a Basic License for ArcGIS.

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Can you clarify what you're looking to do? Are you just looking to assign identical lat/long to identical addresses? What do you mean by small random sample areas? –  AlmaThom Jun 4 '13 at 20:43
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