Five address locators can be authored from the address information managed in the Address Data Management map. The locators described below are included in the local government sample geodatabase for reference:
They leverage the features in the Local Government Information Model and can be built in ArcMap using your data. Once they have been authored, these locators can be used in ArcMap to locate places using addresses along the left or right side of a road, common place-names, rooftop address locations, and road names. The locators can also be published as geocoding services and used in many of the ArcGIS Solutions for Local Government maps and apps.
Composite locator
A composite address locator consists of two or more individual address locators or geocode services. When addresses are geocoded against the composite address locator, they are automatically matched against each of the individual address locators and services. The composite address locator stores only references to the participating address locators and geocode services; it does not contain the actual address information, indexes, and data of the individual locators.
Some attributes of composite locators that may be of interest when working with local government data include the following:
- The composite locator consists of the other four provided locators. The order in which an address is evaluated against these locators can be adjusted in the properties of the composite locator.
- Composite locators can use an output spatial reference different from the participating address locators. The local government composite locator returns a location using WGS 1984 Web Mercator Auxiliary Sphere, but this output spatial reference can also be changed in the properties of the composite locator.
- Locators can be added or removed from the composite locator in the properties of the composite locator. For example, a United States National Grid (USNG)/Military Grid Reference System (MGRS) locator is included with ArcGIS and can be found at \ArcGIS\Desktop10.1\Locators. This locator can be added to the composite locator to provide additional search capabilities when working with the Public Safety applications, for example.
Dual-Range locator
This locator was created using the features in the RoadCenterline feature class and uses the US Address—Dual Ranges locator style.
The US street address locator style lets you create address locators for common addresses encountered in the United States. One advantage of this address locator style is that it permits you to provide a range of house number values for both sides of a street segment. With this, the address locator can not only deliver a location along the street segment but can also determine the side of the street segment where the address is located.
Place-Name locator
This locator was created using the features in the FacilitySitePoint feature class and uses the General—Gazetteer locator style.
Using this locator, you can search for places such as parks, schools, or other facilities by name rather than by address.
Site address locator
This locator was created using the features in the SiteAddressPoint feature class and uses the US Address—Single House locator style.
When created with the SiteAddressPoint feature class, this locator provides rooftop locations for addresses, but unlike the dual-range locator, address values are not interpolated. An address location will only be found if a SiteAddressPoint feature exists for that address.
Street name locator
This locator was created using the features in the RoadCenterline feature class and uses the US Address—Street Name locator style.
The US Address—Street Name locator style lets you create address locators for street name addresses encountered in the United States. This address style is similar to the US Address—Dual Ranges locator style, except that address ranges in the line reference data are not required. Addresses are searched based on the street name only; for example, Orchard Court, Lansing, MI.