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ISO/TC 211 Geographic information/Geomatics

Session 6210. Spatial Data and Professional Standards in ActionThe 100th AAG Annual Meeting

Philadelphia, PennsylvaniaMarch 2004

Presented by Julie Binder Maitra

Federal Geographic Data Committee

Applying ISO/TC 211 Standards in the Development of Data Content Standards

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ISO/TC 211

Applying ISO/TC 211 standards in the development of data content standards

Topics ISO Standards of interest

ISO/DIS 19109 Geographic information — Rules for application schema (slides 3-5)

ISO 19123 Geographic information — Schema for coverage geometry and functions (slides 6-8)

ISO 19115:2003 Geographic information — Metadata (slides 9-11)

Application in development of data content standards Introduction to Geospatial One-Stop (slides 12-13) Standards developed through Geospatial One-Stop (slide

14) Application of ISO standards of interest (slides 15-18)

Links (slide 19)

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ISO/TC 211ISO/DIS 19109 Geographic information —

Rules for application schema

Presents General Feature Model for defining geographic features

Provides rules for defining an application schema in Unified Modeling Language (UML)

Provides rules for integrating schemas from other ISO/TC 211 standards into an application schema for a complete data structure

Pending registration as Final Draft International Standard (FDIS); targeted for publication as an International Standard (IS) in May 2004.

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ISO/TC 211ISO/DIS 19109 Geographic information —

Rules for application schema

Extract of General Feature Model

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ISO/TC 211ISO/DIS 19109 Geographic information —

Rules for application schema

ISO/DIS 19109 provides specialized rules for integrating schemas from

the following standards in the 19100 series of standards:

ISO 19115: 2003, Geographic information — Metadata (including

data quality reporting)ISO 19108:2002, Geographic information — Temporal schemaISO 19107:2003, Geographic information — Spatial schema. ISO/DIS 19110, Geographic information — Feature Cataloguing

MethodologyISO 19112:2003, Geographic information — Spatial referencing by

geographic identifiers

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ISO/TC 211

The online glossary for the U.S. Fish and Wildlife Service’s Interactive Map and Data Server (IMADS) provides these definitions for coverage:

• A digital version of a map forming the basic unit of vector data storage in ArcInfo. A coverage stores geographic features as primary features (such as arcs, nodes, polygons, and label points) and secondary features (such as tics, map extent, links, and annotation). Associated feature attribute tables describe and store attributes of the geographic features.

• A set of thematically associated data considered as a unit. A coverage usually represents a single theme such as soils, streams, roads, or land use.(from http://www.fws.gov/data/IMADS/glossary.htm ) Coverage can also be taken to mean the extent of the earth's surface covered by a data resource such as a national map series or remote sensing data.

ISO 19123 Geographic information — Schema for coverage geometry and functions

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ISO/TC 211

ISO 19123 defines coverage as a “feature that acts as a function to return values from its range for any direct position within its spatiotemporal domain.”

Data sets that can be represented as coverages include digital orthoimages, gridded elevation data sets, and thematic classification maps such as soils maps.

Coverages are of two types: discrete and continuous Representation of geographic phenomena as discrete features or

coverages is not mutually exclusive. A discrete feature or a coverage could represent the same phenomenon.

Registered as a Draft International Standard (DIS); targeted for publication as IS in May 2005.

ISO 19123 Geographic information — Schema for coverage geometry and functions

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ISO/TC 211

The main package in ISO 19115 is Metadata entity set information. It is an aggregate of other packages:

• Identification information – information to uniquely identify a resource or resources

• Constraint information – restrictions on access and use of a resource or metadata

• Data quality information – scope, lineage (information about events or source data used to construct the data), and data quality element information.

• Maintenance information - scope and frequency of updating data.• Spatial representation information - information concerning the

mechanisms (grid or vector) used to represent spatial information in a dataset.

• Reference system information - description of spatial and temporal reference system(s)

ISO 19115:2003 Geographic information — Metadata

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ISO/TC 211

• Content information – information about the feature catalogue used and/or information describing the content of a coverage dataset

• Portrayal catalogue information - information identifying the portrayal catalogue used.

• Distribution information - information about the distributor of and options for obtaining a resource.

• Metadata extension information - information about user specified metadata extensions.

• Application schema information - information about the application schema used to build a dataset.

• Extent information – metadata elements that describe the spatial and temporal extent of the referring entity.

• Citation and responsible party information - data types for citing a resource (dataset, feature, source, publication, etc.) and information about the party responsible for a resource.

ISO 19115:2003 Geographic information — Metadata (continued)

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ISO/TC 211ISO 19115:2003 Geographic information —

Metadata

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ISO/TC 211Introduction to

Geospatial One-Stop E-Government (E-gov) Initiative

Component of President’s Management Agenda Geospatial One-Stop is one of 24 E-gov initiatives

ObjectivesRaise the visibility of the strategic value of geographic

information and the National Spatial Data Infrastructure (NSDI)

Accelerate implementation of the NSDIIncrease Federal agency accountability for the

stewardship and sharing of geospatial resourcesMake access to geospatial information faster, easier

and less expensive for all levels of government and the general public

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ISO/TC 211

1. Develop standards for data themes used by many different GIS applications. These themes are known as NSDI Framework themes.

2. Inventory existing Framework data holdings and create metadata to enable data discovery through the NSDI Clearinghouse.

3. Create metadata for planned data acquisition and update of Framework data and serve metadata through the NSDI Clearinghouse to enable opportunities for partnerships.

4. Prototype and deploy enhanced data access and web mapping services for Federal Framework data.

5. Establish a (One-Stop) Federal Portal providing web services to extend the capabilities of the NSDI Clearinghouse Network.

Introduction to Geospatial One-Stop

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ISO/TC 211 Standards under Development

through Geospatial One-Stop

Base Standard

TransportationElevation

Cadastral

HydrographyGovernmental

UnitsOrthoimagery

Geodetic Control

Air

Rail

Roads

Waterways

Transit

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ISO/TC 211 Application of ISO 19109

UML Example: Government Units Boundaries

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ISO/TC 211Application of ISO 19109

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

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ISO/TC 211Application of ISO 19123

The draft elevation standard models data as simple discrete coverages

Point coverage Curve (line) coverage

Grid coverage Surface coverage

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ISO/TC 211 Application of ISO 19115

Standards developed through Geospatial One-Stop will be compliant with ISO 19115

Some elements listed as optional in ISO 19115 are mandatory for Geospatial One-Stop

examples: Metadata standard name, Metadata standard version, Dataset purpose, Dataset progress, Dataset maintenance and update frequency

ISO 19115 elements closely match elements in FGDC Content Standard for Digital Geospatial Metadata, FGDC-STD-001-1998 (version 2.0); therefore, data standards will be compliant with FGDC standard

FGDC standard lacks metadata elements for language and character set

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ISO/TC 211 Links

ISO Technical Committee 211, Geographic information/Geomatics, www.isotc211.org

Geospatial One-Stop, www.geo-one-stop.gov FGDC Content Standard for Digital Geospatial

Metadata, FGDC-STD-001-1998 (version 2.0), http://www.fgdc.gov/metadata/contstan.html

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ISO/TC 211 Thank you !

(Ms.) Julie Binder MaitraFederal Geographic Data Committee (FGDC)

590 National Center12201 Sunrise Valley Drive

Reston, Virginia 20192USA

Email: jmaitra@usgs.govPhone: +1 703 648 4627

Fax: +1 703 648 5755