Geocoding Techniques and Options for US and International Locations. Thomas Oaks Tosia Shall

Transcription

1 Geocoding Techniques and Options for US and International Locations Thomas Oaks Tosia Shall

2 Agenda Geocoding Overview and Requirements Geocoding in Desktop Geocoding with a Service

3 What is Geocoding? A GIS operation to transform a description of a location such as a pair of coordinates, an address, or a name of a place to a location on a map New York Street - Well Head BF N, W

4 Demo Desktop Overview

5 Requirements for Geocoding An understanding of the process Data to be geocoded Locator(s) and reference data

6 Requirements for Geocoding An Understanding of the Geocoding Process: Prepare your addresses Build or obtain reference data Determine address locator style Build or use an address locator Locate addresses, rematch remaining addresses

7 Requirements for Geocoding Data to be Geocoded: A Table of : Addresses New York Street, Redlands, CA Place Names Mount Rushmore Descriptive Locations - Well Head BF-245 A Single Location: Address 8615 Westwood Center Drive, Vienna, VA Place Name Grand Canyon Descriptive Location - 50 Feet NW of Main Street, Fairfax, VA 22030

8 Requirements for Geocoding An Understanding of the Geocoding Process: Prepare your addresses Build or obtain reference data Determine address locator style Build or use an address locator Locate addresses, rematch remaining addresses

9 Reference Data Many sources - StreetMap data - Your own data - Data vendors - Data shared on ArcGIS.com

10 Requirements for Geocoding An Understanding of the Geocoding Process: Prepare your addresses Build or obtain reference data Determine address locator style Build or use an address locator Locate addresses, rematch remaining addresses

11 What is a Locator? Data, rules and indexes that are used for geocoding Can be used locally or through a service Locator Streets, address points, postal points Address rules and conventions Address Information Rules Indexes Reference data Map Features

12 Ways to find locators for geocoding ArcGIS Online World Geocoding Service StreetMap Premium Products from Esri Geocoding can be done with locators or geocode services from various sources Users locators shared at Arcgis.com Build your own locators with ArcGIS Desktop

13 Geocoding Components Table of Addresses Geocode services Address Locator Geocoded features

14 Geocoding with a locator Table of Addresses Address Locator Geocoded features

15 Requirements for Geocoding An Understanding of the Geocoding Process: Prepare your addresses Build or obtain reference data Determine address locator style Build or use an address locator Locate addresses, rematch remaining addresses

16 What is an Address Locator Style Template containing geocoding properties Choose style based on properties of: - Address data: address information to geocode - Reference data: geometry and attribute values Locator styles can be customized to support international addresses

17 Locator Style Example US Address Dual Ranges Reference Data = Street Network Main Street, Anytown, ST MAIN STREET 120 Main Street, Anytown, ST

18 Requirements for Geocoding An Understanding of the Geocoding Process: Prepare your addresses Build or obtain reference data Determine address locator style Build or use an address locator Locate addresses, rematch remaining addresses

19 Demo Build a Locator

20 Composite Locator Combines multiple locators - Geocode against multiple datasets - Cascade/Fallback geocoding - Spatially disjointed datasets

21 Requirements for Geocoding An Understanding of the Geocoding Process: Prepare your addresses Build or obtain reference data Determine address locator style Build or use an address locator Locate addresses

22 Demo Composite Locator

23 Geocoding with a geocode service Table of Addresses Geocode services Geocoded features

24 Desktop: Geocoding with a geocode service Geocode services published with ArcGIS Server

25 Desktop: Geocoding with a geocode service ArcGIS Online (arcgis.com)

26 Demo Desktop Geocoding with a Service

27 The ArcGIS Online World Geocoding Service World Geodcoding Service found at: Requires a subscription to an ArcGIS Online organization, as it consumes credits during batch geocoding - 80 Credits per 1,000 geocodes - The old locators used prior to SP1 are currently still accessible at the following URL, but will be inaccessible once an existing subscription expires

28 Countries included in the World Geocoding Service: Most up to date list can be found at: -> Help -> World Geocoding Service Level 1: Highest quality geocoding experience. Address searches are likely to result in accurate matches to PointAddress and StreetAddress levels. Level 2: Good quality geocoding experience. Address searches often result in PointAddress and StreetAddress level matches, but sometimes match to StreetName and Admin levels. Level 3: Fair quality geocoding experience. Address searches sometimes result in street-level matches, but more often match to StreetName and Admin levels.

29 Geosearch and Batch Geocoding in ArcGIS Online

30 Geosearch One entry at a time Users type in a description of a feature such as a mountain range, lake, building, city, address, etc, and the map zooms to that location The result may be displayed on a map, but the result is not stored for later use Example: Find address or place box in the ArcGIS.com map viewer Geosearch services require no fee

31 Batch Geocoding Convert a table of addresses or descriptions into x,y coordinates and append the results to existing records in a database Published geocoding services internal or public may be free, but The ArcGIS Online World Geocoding Service requires an ArcGIS Online subscription

32 Demo Geocoding in the ArcGIS Online Map Viewer

33 Custom App Using the World Geocoding Service When making a request, you need to provide the identity of named users from your subscription. - Prompt end users to sign in - Store credentials with the application Find out methods and samples here: -> help -> World Geocoding Service -> Batch Geocode Authentication

34 Demo Batch Geocoding in Custom App

35 Upcoming Events esri.com/events Date Event Location March 21, 2013 Esri DC Meet Up Big Data & Location Analytics Washington, DC April 18, 2013 Esri DC Meet Up Washington, DC March 23 26, 2013 Esri Partner Conference Palm Springs, CA March 25 28, 2013 Esri Developer Summit Palm Springs, CA July 6 9, 2013 Esri National Security Summit San Diego, CA July 8 12, 2013 Esri International User Conference San Diego, CA

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