NSDI Standards and Emerging International

Geospatial Data Standards - Avoiding a Clash

Richard HoganU.S. Geological Survey

Reston, Virginia June 23, 1998

703 648 5531 rlhogan@usgs.gov

The Geospatial Data Problem

Data are hard to find Data are difficult to access Data are not current Data are undocumented Data are incomplete Data are not in the right format

NSDI Objectives

Geospatial Data Standards

Digital Geospatial Data Framework

Digital Thematic Data

National Geospatial Data Clearinghouse

NSDI StandardsMetadata - for documenting, finding &

assessing dataSDTS - for documenting, accessing &

transferring data (archive)Content standards - for semantic

definition– Wetlands (classification)

– Vegetation (classification)

– Cadastral (data model)

SDTS eXpress

Filling out the MatrixFGDCTheme

Document Discover Model Transfer Semantics

BaseCarto

Metadata Z39.50 Geo

SDTS TVPSDTS RP

Elevation

Orthoimagry

Biologic Metadata NBII

Z39.50 Geo

Bathy Metadata Z39.50 Geo

Shoreline

Cadastral Metadata (Cadastral)

Z39.50 Geo

Cadastral SDTS CP

Cadastral

Cul &Demo

Metadata C&D

Z39.50 Geo

Addressing

Filling out the Matrixby adopting

FGDCTheme

Document Discover Model Transfer Semantics

BaseCarto

Metadata Z39.50 Geo

SDTS TVPSDTS RP

Elevation

Orthoimagry

Biologic Metadata NBII

Z39.50 Geo

Bathy Metadata Z39.50 Geo

Shoreline

Cadastral Metadata (Cadastral)

Z39.50 Geo

Cadastral SDTS CP

Cadastral

Cul &Demo

Metadata C&D

Z39.50 Geo

Addressing

Non-FGDC Developed Standards

Filling out the Matrixby adapting

FGDCTheme

Document Discover Model Transfer Semantics

BaseCarto

Metadata Z39.50 Geo

SDTS TVPSDTS RP

Elevation

Orthoimagry

Biologic Metadata NBII

Z39.50 Geo

Bathy Metadata Z39.50 Geo

Shoreline

Cadastral Metadata (Cadastral)

Z39.50 Geo

Cadastral SDTS CP

Cadastral

Cul &Demo

Metadata C&D

Z39.50 Geo

Addressing

General standards applicable to more than one themeProfiles

ISO 15046 Scope

1Standardization in the field of Standardization in the field of digital digital geographic information.geographic information.

2This work aims to establish This work aims to establish a structured set a structured set of standardsof standards for information concerning for information concerning objects or phenomena that are directly or objects or phenomena that are directly or indirectly associated with a location relative indirectly associated with a location relative to the Earth.to the Earth.

ISO 15046 Scope

3These standards may specify, for These standards may specify, for geographic information, geographic information, methods, tools and methods, tools and services forservices for data management (including data management (including definition and description), definition and description), acquiring, acquiring, processing, analyzing, accessing, processing, analyzing, accessing, presenting and transferringpresenting and transferring such data in such data in digital/electronic form between different digital/electronic form between different users, systems and locations.users, systems and locations.

ISO 15046 Scope

4This work This work shall link toshall link to appropriate appropriate standards for standards for information technologyinformation technology and and data where possible, and provide a data where possible, and provide a framework for the development of sector-framework for the development of sector-specific applications using geographic specific applications using geographic data.data.

Projects within ISO/TC 211

WG 4Services

WG 3 Data

Administration

WG 1Framework

WG 5Profiles

WG 2Data

Models

(1) Reference Model*

(2) Overview

(3) Conceptual Schema Lang

(4) Terminology

(5) Conformance & Testing

(R) Imagery & Gridded Data

(7) Spatial Schema

(8) Temporal Schema*

(9) Rules for Application Schema

(20) Spatial Operators*

(10) Cataloging*

(11) Ref by Coordinate

(12) Ref by Geographic Identifier

(13) Quality*

(14) Quality Evaluation Procedure (15) Metadata*

(16) Positioning Services*

(17) Portrayal of Geographic Information

(18) Encoding

(19) Services

(6) Profiles

(R) Functional Standards

NSDI - ISO 15046 Relationships

Data Documentation(metadata)

FGDC CSDGM

nearly 1:1 with

ISO 15046-15FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001:1994)

was used as the base document for WD 15046-15

NSDI - ISO 15046 Relationships

Data Transfer

NCITS SDTS is highly compatible with relevant parts of ISO

15046, so much so that

SDTS Topological Vector Profile

could become the first

registered profile of ISO 15046

NSDI - ISO 15046 RelationshipsData Semantics

ISO 15046-10 defines a standard methodology for

creating geospatial feature catalogs

it extends the basic feature model found in SDTS such that

SDTS Part 2 is ISO 15046-10 compliantsome FGDC content standards will need to be redefined to be

compliant (Feature Registry Project)

The Strategy

Promote NSDI standards as parts of ISO-15046

Influence development of key parts of ISO-15046

Link FGDC to ISO/TC 211

The Links

NCITS L1

FGDCISO/TC211

Key Metadata Persons

Rick Pearsall - USGS

Dave Danko - NIMA

Leslie Godwin - Census Bureau

Norm Andersen - Lockheed-Martin

Collision Avoidance

Be aware of other activities

Link processes

Introduce and defend key concepts

Reverse engineer when necessary

Best Practices

Adopt existing standards

Adapt existing standards

Link domain specific standards to general IT standards

Get involved in international technical work as soon as possible

Avoid “end runs”