1. GEOCODING Creates map features from addresses or place-names.
Converts a name or description of a location to spatial data
Usually converted into point features
Geocoding provides the capability to input into GIS a database that contains addresses without any other coordinate data

2. REQUIREMENTS Reference Data Address Table Address Locator
Database containing records representing the geometry of street segments between consecutive intersections, and the address ranges on each side of each segment.
Address Table
A list of addresses that you want to input into GIS that are stored as a database table or a text file.
Address Locator
File that specifies:
The reference data and its relevant attributes
The relevant attributes from the address table
Various geocoding rules and tolerances
Different styles for reference data with different attributes.
Each style requires that certain attributes be present in the address table as well.

3. HOW IT WORKS
Street segment record is located in the search.
Location within the street segment is estimated.
Estimation is based on linear interpolation within the address range.

4. 950 West Broadway EXAMPLE In the 900 block
On the even-numbered side of the street
Between address 900 and 998
= 50/98 = 51.02% of the distance from the start of the segment to the end.
Assumptions
Addresses are numbered sequentially and in order.
Addresses are spaced evenly.
950
900
West Broadway
998

5. LOCAL GEOCODING EXAMPLES
NATIONAL
GEOGRAPHIC
MAP MACHINE
Ex:
Sunburst Drive
El Cajon, CA
92021

6. LOCAL GEOCODING EXAMPLES
Microsoft Streets and Trips Ex: Sunburst Drive, El Cajon, CA 92021

7. LOCAL GEOCODING EXAMPLES
Google Earth Ex: Sunburst Drive, El Cajon, CA 92021

8. LOCAL GEOCODING EXAMPLES
Microsoft Virtual Earth Ex: Sunburst Drive, El Cajon, CA 92021

9. LOCAL GEOCODING EXAMPLES
Microsoft Virtual Earth Ex: Sunburst Drive, El Cajon, CA (multiple addresses)
1697
1648
1639
1623
1632
1611
1615
1600
1602
1601

10. LOCAL GEOCODING EXAMPLES
Microsoft Virtual Earth Ex: Birdsong Place, El Cajon, CA 92021