FGDC Address Standard Update: FGDC Address Standard Update: What's Next? What's Next?

Address Standard Working GroupMartha Wells, GISPCarl Anderson, GISPSara Yurman, GISP

Ed Wells, GISPHilary Perkins, GISP

FGDC Address Data StandardFGDC Address Data Standard

• Scope, Status, and Structure– United States Street, Landmark, and Postal Address

Data Standard"– Scope: Street, landmark, and postal addresses in the

United States– Status: FGDC-endorsed standard– Structure: One data standard in four parts:

• Data Content• Data Classification• Data Quality• Data Exchange

Purpose of the StandardPurpose of the Standard

• Provide a systematic basis for recording all addresses in the United States

• Provide one standard that meets the address data management needs of:– Local address administrators– Emergency response and navigation– Postal and package delivery– Administrative recordkeeping– Address data aggregation

• Support best practices in address data management

Organization of the FGDC Organization of the FGDC StandardStandard

• Data Content• Data Classification• Data Quality• Data Exchange• Two profiles: USPS and NENA (still in draft)

Number, Subaddress and Street Number, Subaddress and Street Name ElementsName Elements

• Address Number Elements– Address Number Prefix– Address Number – Address Number Suffix– Complete Address

Number

• Subaddress Elements– Subaddress Type– Subaddress ID– Subaddress– Complete Subaddress

• Street Name Elements– Street Name Premodifier– Street Name Predirectional– Street Name Pre-type– Separator Element– Street Name– Street Name Post-type– Street Name

Postdirectional– Street Name Postmodifier– Complete Street Name

Landmark, Place Name and Postal Landmark, Place Name and Postal ElementsElements

• Landmark Elements– Landmark Name– Complete Landmark

Name

• Place Names– Place Name (community,

municipal, postal, county)– Place Name Type– State Name– Country Name– ZIP Code– ZIP + 4

• Postal Elements– USPS Box Type– USPS Box ID– USPS Box– USPS Box Group Type– USPS Box Group ID– USPS Route– USPS Address– USPS General Delivery

Point

Address AttributesAddress Attributes

• Address Identifiers (UUID)• Address Geometry• Address Status• Attributes for Quality Control• Attributes that relate addresses to other features

(parcels, roads, etc.) and to each other

Address Reference System ElementsAddress Reference System Elements

• Provide for description of the rules used in assigning addresses and street names

• Useful in documenting addressing practices• Essential for quality control

– If you don’t know the rules, you can’t determine what is right and what is wrong.• Example: if you have an even number in an address, how do you

know whether it’s on the correct side of the street. The Address Reference System will identify which side should be even numbers, and a quality control test can be run to see whether the even number in an address is on the side which should have even numbers

NENA NG9-1-1 CLDXF StandardNENA NG9-1-1 CLDXF Standard

• Civic Location Data Exchange Format – Developed by the NENA Next Generation Data

Development Working Group

What Is CLDXF?What Is CLDXF?

• Standardized way to exchange 9-1-1 call civic location (address) information– Created by NENA NGDD WG as part of Next Generation 9-1-1 suite of

standards– Status: Not yet adopted. Public review complete. Comments under

adjudication.

• Profile of IETF Geo-priv PIDF-LO• Related by profile to the new FGDC address data

standard – A profile restricts or extends a base standard (without

contradicting it) for a particular application.

CLDXF ContentsCLDXF Contents

• Elements needed to compose addresses in 9-1-1 call records:– Country, state, and place names and codes– Street name elements– Address number elements– Landmark name– Subaddress elements

What CLDXF ExcludesWhat CLDXF Excludes

• Addresses that are unacceptable in 9-1-1 call records:– Intersection addresses – Address ranges– PO Boxes, Rural Routes and similar postal addresses

• Information not needed in the address portion of a call record: – Address IDs and attributes– Address classes– Address quality tests

Key CLDXF-FGDC DifferencesKey CLDXF-FGDC Differences

• Reasons for differences– CLDXF is about call records, not address records

• Addresses are a vital element of call records– Different purposes and use cases– CLDXF must conform to PIDF-LO framework

Creating the CLDXF – FGDC ProfileCreating the CLDXF – FGDC Profile

• Compared the business purposes of the standards– Determined which address classes and elements were needed

for NENA purposes– Mapped FGDC elements and NENA elements to each other– Compared the element definitions, examples, notes, etc. in

complete detail. Noted all discrepancies.

• Reviewed FGDC address classes and determined which were useful in CLDXF.– Within the profile, restricted or extended the FGDC standard as

needed to accommodate discrepancies and exclusions.

• Listed the steps needed to convert between NENA and FGDC address records.

What's in the Profile?What's in the Profile?

• Detailed, element by element comparison of FGDC and NENA elements– Which NENA element corresponds to which FGDC elements

• Discrepancies, comparisons, reconciliation• Other restrictions and extensions: parts,

classes, domains of values• Step-by-step task list for converting address

records between NENA and FGDC standards.

• Conformance requirements

ResultResult

• Address data exchange will be included in the NG9-1-1 suite of standards

• CLDXF will be a NENA standard and statement of best practice for voluntary adoption by PSAPs nationwide.

• CLDXF conforms to the IETF PIDF-LO but makes it US-specific.

• CLDXF and FGDC standards are tightly related.• Address data managers can exchange data

across the standards.• The three standards reinforce each other.

Implementation: CAP Grants Implementation: CAP Grants and Beyondand Beyond

Moving Forward

Federal, State and Local Adoption Federal, State and Local Adoption and Useand Use

• Census and other federal agencies are using the Standard

• Several states, counties and cities have adopted the standard, and are implementing data models that use it

• ASWG is planning to work with NIEM to develop a profile for their use

• Planning to propose Addresses as the eighth data theme in the NSDI Framework

Benefits of the StandardBenefits of the Standard

• Provides a comprehensive syntactical (grammatical) approach to address data across the United States

• Incorporates Quality Control (no other standard does this)

• Provides for standardized exchange of information

CAP Grants Support ImplementationCAP Grants Support Implementation

• Two CAP Grants from FGDC for Address Standard Implementation– One provides for development of tools

• Creation of a hyperlinked, web implementation of the standard so that the standard is more accessible and comprehensible to users

• Creation of tools for preparing data for import and export– One provides for the development of training materials to assist local

governments in implementing the standard

Quality Control for Address DataQuality Control for Address DataUsing fishbones to verify addresses—standard provides the tools so that the quality of address data can be tracked.

Data ExchangeData Exchange

• Standard contains a full .XSD (XML definition document) for address data, attributes, and quality measures.

• XML also provides a structure for address data (a data model, but not a database model)

• Links to tools being developed to prepare data for import and export

Questions and DiscussionQuestions and Discussion

For Further InformationFor Further Information

• Contact: Martha McCart Wells, GISP– Spatial Focus, Inc.– mwells@spatialfocus.com– 205-616-0205

• The Standard may be downloaded from URISA– www.urisa.org/about/initiatives/addressstandard– PDF files available at this time.– The .XSD diagrams are also hyperlinked to this site