Beginning Geocoding

Getting Started Understanding the theory Create Address Locator Geocode Introduction to more advanced methods

Beginning Geocoding What is geocoding? Definition – The process of converting an address to a specific point location on a map. Gathering data Streets (Reference data) Table of student information (Address table)

Beginning Geocoding Matching and Scoring Address Components Address380 New York Street Reference theme Score LeftFrom LeftTo RightFrom RightTo StreetName Type SufDir 75 N NEW YORK ST Missing component results in lower match score

Beginning Geocoding The Geocoding Process Create a new address locator Geocode addresses in a table Rematch addressees interactively

Beginning Geocoding Create a New Address Locator An address locator converts textual descriptions of locations into geographic features. Automatically builds a geocoding index. Create in ArcCatalog

Beginning Geocoding Create Address Locator Choose an address style Pick a primary reference table Modify address locator properties Set a 30 foot side offset and 3% end offset!!

Beginning Geocoding Geocode Addresses: Geocode in ArcMap Choose an address locator Specify the fields to use in the student address table Name the output feature class Begin geocoding

Beginning Geocoding Rematch Addressees Interactively Open ArcMap to review addresses geographically. Can also rematch in ArcCatalog. Start editing Modify and select candidates No need to save map document!!

Beginning Geocoding Interactive Review Dialog Window

Beginning Geocoding Matching and Scoring Address Components Address(ArcView interprets as) 380 House number New YorkStreet name StreetStreet type Reference theme Score LeftFrom LeftTo RightFrom RightTo StreetName Type SufDir 75 N NEW YORK ST Missing component results in lower match score