Development and Implementation of FGDC Standards

Presented byJulie Binder Maitra

Federal Geographic Data Committee (FGDC)

To

Second Earth Science Data Systems Working Group (ESDSWG) Meeting October 19, 2004

• Introduction to the FGDC – Federal guidance on the National Spatial

Data Infrastructure (NSDI)– Components of the NSDI– FGDC Organization

• FGDC Standards Development Process• FGDC Standards Accomplishments• Non-Federal standards• Framework Data Standards

Development and Implementation of FGDC Standards

Federal guidance on NSDI

• Executive Order 12906 (April 1994) establishes the National Spatial Data Infrastructure (NSDI) as “the technology, policies, standards, and human resources necessary to acquire, process, store, distribute, and improve utilization of geospatial data.”

• OMB Circular A-16 (Revised August 2002)

•incorporates EO 12906 and affirms the NSDI.

•establishes the FGDC as the interagency coordinating body for NSDI-related activities

Components of the NSDI

Metadata

GEOdata

Clearinghouse (catalog)Clearinghouse (catalog)

FrameworkFramework

Standards

Partnerships

FGDC Organization

USDA Commerce Defense

NIMA USACE

Energy GSA HUD HHS Interior Justice

Transportation EPA FEMA Library of Congress NARA NASA NSF Department of State TVA

Federal agency members

• The FGDC Standards Process is:– Structured– Iterative– Well-documented

• The FGDC develops standards for geospatial data only when there are no non-Federally authored standards that fulfill agency missions and program needs

• The FGDC standards development process is modeled after ISO and ANSI standards processes

FGDC Standards Process

FGDC Standards Process

FGDC Steering Committee12 – Endorsement FINAL

CG11 - Approve Standard for Endorsement

SWG10 - Evaluate Responsiveness to Public Comments

Standards Development Group9 - Respond to Public Comments

FGDC Secretariat8 - Coordinate Public Review

FGDC Coordination Group (CG)7 - Approve Standard for Public Review

SWG6 - Review and Evaluate Committee Draft REVIEW

SC/WG5 - Review Working Draft

Standards Development Group4 - Produce Working Draft DRAFT

FGDC Subcommittee or Working Group (SC/WG)

3 - Set Up Project PROJECT

SWG2 - Review Proposal

FGDC Standards Working Group (SWG)1- Develop ProposalPROPOSAL

CUSTODIANSTEPSTAGE

FGDC Standards ProcessThe FGDC Standards Process is iterative

FGDC Standards Process

The FGDC Standards Process is documented in:

• FGDC Standards Reference Model, http://www.fgdc.gov/standards/refmod97.pdf

• 13 supporting FGDC Directives, http://www.fgdc.gov/standards/directives/directives.html

FGDC Standards Accomplishments

• 20 FGDC Endorsed Standards– First standard endorsed in 1995: Content Standard for Digital

Geospatial Metadata (version 2.0), FGDC-STD-001-1998– Latest standard endorsed in August 2002: Content Standard for

Digital Geospatial Metadata: Extensions for Remote Sensing Metadata, FGDC-STD-012-2002

– Other endorsed standards include: • Spatial Data Transfer Standard (SDTS) & profiles• Geospatial Positioning Accuracy Standards • Various thematic data standards

• 19 other Standards in various stages of the FGDC Standards Process

Is U.S. member body of

ISO Technical Committee

(TC) 211

American National Standards Institute (ANSI)

INCITS TechnicalCommitteeL1

InterNational Committee on Information

Technology Standards (INCITS)

Is accredited by

Is a Subcommittee of

Is a voting member of Is an advisory member of

Federal Standards

Is strategic member of

Accredits INCITS L1 as U.S. TAG to

ISO

Is a Technical Committee of

NIST

Consortia andAcademia

ANSI Accredited Standards Development Organization

Open Geospatial Consortium

OMGW3COASISetc.

Other Standards Development

Organizations

ICSP

FGDCState

Municipalities

Chairs MOU

Sets Policy For

OMB

Reports to

Participate in standards development

ISO/TC 211 – Joint AdvisoryGroup (JAG)

Geographic Information Standards Activities

in the United States

• ISO Technical Committee 211, Geographic information/Geomatics, is focused on abstract specifications, design framework, and international political consensus

• Open Geospatial Consortium specializes in extending the abstract model into implementation specifications

• FGDC and INCITS Technical Committee L1, GIS, support the development of thematic data content standards

FGDC participation in non-Federal standards organizations

Base Standard

TransportationElevation

Cadastral

HydrographyGovernmental

Units

Orthoimagery

Geodetic Control

Air

Rail

Roads

Waterways

Transit

Framework Data Themes

Development of Framework Data Standards

Develop standards through procedures established by the American National Standards Institute (ANSI) and InterNational Committee for Information Technology Standards (INCITS).

Bring together subject matter experts from all levels of government (Federal, State, and local), academia, and the private sector to develop data standards for Framework themes

Use ISO 19100 series of geographic information standards developed by ISO Technical Committee 211, Geographic information/Geomatics, ANSI standards, and FGDC standards to develop Framework data standards

Apply ISO General Feature Model to define feature types

Provide UML modeling support

Provide documentation of feature types in data dictionary

Map UML data models to XML/Geography Markup Language schema documents

Application of ISO General Feature Model

Revised UML data model

for Governmental Unit Boundaries

Data Dictionary Documentation

Excerpt from data dictionary for GUB_GovernmentalUnit class

Name Definition Obligation MO Data Type Domain

GUB_GovernmentalUnit The GU being documented M 1..* Class Lines 20-28

typeName The designated name for the type of GU whose data are being described

M 1 CharacterString Annex C, free text

typeNameAbbreviation The abbreviated name for the type of GU whose data are being described

C/ if an abbreviation exists for GU Type Name

0..1 CharacterString Free text

typeDefinition Definition of the type of GU whose data are being described

C/ if the type definition is known

0..1 CharacterString Annex C, free text

typeCode The specific code which identifies the GU being described

C/ if a type code exists

0..* CharacterString/ Integer Free number

codingSystemReference GU type code reference M 1..* CharacterString/ Integer FIPS code, free text, free number

maintenanceRelationshipList List of common areal information between one or more GUs or legal entities and geographic area features for the GU type being described

C/ if one or more maintenance relationships exist

0..* CharacterString Free text

contiguousRelationshipList List of GUs or feature objects that share a common point or portion of a boundary

C/ if one or more contiguous relationships exist

0..* CharacterString Free text

composedOfRelationshipList List of GU or feature object that contains subentities that are completely contained within and are the extent of the entity

C/ if one or more composed of relationships exist

0..* CharacterString Free text

composesRelationshipList List of GU subentities that are completely contained within an entity

C/ if one or more composes relationships exist

0..* CharacterString Free text

Map UML Models to XML/GML Schemas

UML data models in .xmi format were transformed to XML/Geography Markup Language (GML) schemas through UGAS software tool

The XML/GML schema documents can be used to create, validate, and process geographic information with XML parsing and validation software.

Activity supported through Information Interoperability component of the Open Geospatial Consortium’s Open Web Services 2.0 Testbed

Status of Framework Data Standards

Standards project is registered as INCITS Project 1574-D, Geographic Information – Framework Data Content Standard

Objective is an American National Standard (ANS)

Standards initially developed through Geospatial One-Stop e-government initiative, but FGDC has assumed leadership for further development

Draft standards out for public review until October 30, 2004

The FGDC funded projects across the U.S. to serve and use Framework data over the web using the Open Geospatial Consortium’s Web Feature Service (WFS) specification.

Resources FGDC, www.fgdc.gov

Framework Standard Registered Review site, http://www.fgdc.gov/RReview

INCITS Technical Committee L1, www.incits-l1.org ISO Technical Committee 211, www.isotc211.org Open Geospatial Consortium (formerly OpenGIS

Consortium), www.opengeospatial.org Mapping an ISO 19100 UML Application Schema to a

GML Application Schema, http://www.interactive-instruments.de/ugas

Object Management Group, www.omg.org (UML specification and .xmi format)

W3C, www.w3c.org (XML specification)

Julie Binder Maitra

FGDC Standards Coordinator

Email: jmaitra@fgdc.gov

Phone: 703 648 4627

URL: http://www.fgdc.gov/standards/standards.html