GTECH 361

Lecture 13a

Address Matching

Address Event Tables

Any supported tabular format One field must specify an address

The name of that field is not interpreted

Using Addresses for Geocoding

Addresses are matched against a reference data source that contains address information as well as spatial information (feature geometry)

Address Components Address (house or building) number Prefix direction Prefix type Street name Street type Suffix direction Zone

Geocoding Styles Single field US one address US one address with AltName US one address with zone US one address with zone and AltName US one range US streets ZIP 5-digit ZIP+4

For more information about geocoding styles, click the Contents tab in the ArcGIS online help and locate the topics Geocoding addresses > Preparing

reference data for a geocoding service and Geocoding addresses > Preparing address data for geocoding

Reference Data Source

In US Streets style addresses, four attributes define the address ranges for each side of the street L_ADD_FROM L_ADD_TO R_ADD_FROM R_ADD_TO

Reference Data Source

Geocoding Service Defines the process for converting

addresses into geometric shapes path to the reference data source and

address event table algorithms for standardizing address

descriptions and matching them to the reference data

parameters for reading address data matching the address data to the reference

data creating output

Geocoding Services

Geocoding services are stored in the Geocoding Services folder in the Catalog

Interpolating Addresses1. ArcGIS first evaluates the street segment's address start

and end points. E.g., 800 and 898 on the left side and 800 and 899 on the right side

2. ArcGIS determines whether the address is an even or odd number; if is even, it will be matched to the even address range.

3. The even address range is determined, e.g., 898 – 800 = 98

4. The location of the address within the address range is calculated Next, an offset is applied (see below) if one has been specified

5. The coordinates of the address are calculated using the coordinate system of the reference data source (by default)

6. A new point feature is created at the derived coordinates

Interpolating Addresses

Interactive Matching

Interpreting the Output

Status Score Side

Setting Upa Geocoding Service

Create a geocoding service in ArcCatalog that defines Geocoding style Reference data source Address event table Specific steps to match addresses

Can be used either in ArcMap or in ArcCatalog

Geocoding Service Properties Dialog

Data Organization

Reference feature

Its associated table

Mapping of attributes

Specifying Input Address Fields

This style requires street and zone ArcGIS automatically considers

data in fields Address, Addr, or Street in the address table to be street address data

Alias Tables

Output Options

Offset

X,Y coordinates of the features Standardized address Reference data ID Percent along the reference feature

where the address falls

Unmatched Records

Geocoding Options

Interactive Review Dialog