Cadcorp SIS® - Spatial Information System®

Normes de OGC: Passé, Présent et Futur

Martin DalyTechnical Director

Cadcorp LtdSIG et Interopérabilité Conference

Jeudi 12 Mai 2005

Definitions

• De jure– “According to law; by right”*– The Metre

• “The length of the path travelled by light in absolute vacuum during a time interval of 1/299,792,458 of a second.”

• De facto– “In reality or fact; actually”*– AutoCAD DXF

• “…”

*Source: http://www.dictionary.com

Open Geospatial Consortium, Inc™ (OGC) – The Organisation

http://www.opengeospatial.org/about

• “The Open Geospatial Consortium, Inc (OGC) is an international industry consortium of 279 companies, government agencies and universities participating in a consensus process to develop publicly available interface specifications.”

• Vision– “A world in which everyone benefits from geographic

information and services made available across any network, application, or platform.”

• Mission– “To lead the global development, promotion and harmonization

of open standards and architectures that enable the integration of geospatial data and services into user applications and advance the formation of related market opportunities.”

OGC™ – The Members

• 279 to date• Several “levels”

– Strategic†* (8)– Principal and Principal Plus†* (11)– Technical* (54)– Associate (75)– Small Company (13)– Government – Subnational (20)– Government – Local (9)– University (89)

• Fees range from $300 to $negotiable

† Planning Committee (PC) Member* Technical Committee (TC) Member

http://www.opengeospatial.org/about/?page=members

OGC™ - The Process

http://www.opengeospatial.org/about/?page=process

OGC™ - The Abstract Specification

• “The OGC Technical Committee (TC) has developed an architecture in support of its vision of geospatial technology and data interoperability called the OGC Abstract Specification. The Abstract Specification provides the conceptual foundation for most OGC specification development activities.”

• 17 topics– Overview, Feature Geometry, Spatial Referencing by Co-

ordinates, Features, Metadata, Catalog Services, etc.

http://www.opengeospatial.org/specs/?page=abstract

OGC™ - The Standards (I)

• Database storage and access– Simple Features (SF) for SQL– SF for OLE/COM

• OLE DB Provider part

http://www.opengeospatial.org/specs/

OGC™ - The Standards (II)

• Low-level API– SF for OLE/COM and Corba– Co-ordinate Transformations Services

(CTS) for OLE/COM– Grid Coverages (GC) for OLE/COM

http://www.opengeospatial.org/specs/

OGC™ - The Standards (III)

• Web Services– Web Map Service (WMS)– Web Feature Service (WFS)– Web Coverage Service (WCS)– Catalog Services for the Web (CS-W)

http://www.opengeospatial.org/specs/

OGC™ - The Standards (IV)

• Geography Markup Language (GML)• Open Location Services (OpenLS)

http://www.opengeospatial.org/specs/

OGC™ - Not The Standards

• Discussion Papers (48)– “Discussion papers present technology issues being considered

in the Working Groups of the Open Geospatial Consortium Technical Committee. Their purpose is to create discussion in the geospatial information industry on a specific topic. These papers do not represent the official position of the Open Geospatial Consortium nor of the OGC Technical Committee.”

• Recommendation Papers (9)– “OGC Recommendation Papers are developed via OGC's

Technology Development Process and reflect an official position of OGC. Recommendation papers are not Adopted Specifications, but set direction for specification development. If a Recommendation Paper is focused on engineering specifications, then one may assume that the content is still under rapid change and that the reader should recognize the volatile nature of the specification when building implementations.”

OGC™ - The Compliance Tests

• SF for SQL– SQL-based test suite

• SF, CTS and GC for OLE/COM– Microsoft Visual Basic test suite

• WMS and WFS– On-line test suite– GML 2.1.x validator– WCS soon

http://www.opengeospatial.org/resources/?page=testing

OGC™ - ISO/TC 204 and TC 211

• TC 204 – Intelligent Transportation Systems– OGC collaborates via staff and members

• TC 211 – Geospatial– OGC has Class A Liaison– OGC and TC 211 share documents, generate New Work

Item Proposals (NWIPs) and have joint editing teams– Several ISO standards are part of the OGC Abstract

Specification– Several OGC standards are ISO standards

• More are pending

http://www.opengeospatial.org/partners/?page=iso

OGC™ - The Timeline• 1994 (20 members)• 1997 (112)

– SF SQL 1.0• 1999 (182)

– SF SQL 1.1• 2000 (209)

– GML 1.0 (RP)– WMS 1.0

• 2001 (228)– GML 2.0

• 2002 (238)– CAT 1.0– GML 2.1– WFS 1.0

• 2003 (254)– GML 3.0, 3.1– OpenLS 1.0– WCS 1.0– WMC 1.0

• 2004 (275)– CAT 2.0– WMS 1.3– 50th TC meeting– First Plugfest and IE

• 1882– Babbage’s Difference Engine

• 1981– IBM PC

• 1991– Linux 0.01

• 1996– ESRI Shape– HTTP 1.1

• 1997– IEEE 802.11

• 1998– Google– XML 1.0

• 1999– Oracle 8i

• 2000– SOAP 1.0, 1.1

• 2001– XML Schema

• 2002– Oracle 9iR2

• 2004– XML 1.1

OGC™ – The Future• New specifications

– OWS Common 1.0– “Simple Feature GML”

• And other GML “profiles”– Sensor Web– Web Co-ordinate Transformation Service– Web Processing Service– Web Terrain Service

• “Web Perspective View Service”– Web 3D Service

• Revisions of existing specifications– WMC 1.1, Filter 1.1, GO-1, OpenLS 1.1, WFS 1.1

OGC™ - The Questions

• ?

Cadcorp SIS® - Spatial Information System®

Support for OGC™ Specifications

OGC™ - The Celebrities• August 1999, Southampton

– Solar eclipse• September 2001, Washington DC

– Osama bin Laden• January 2004, UN, New York

– Bill Gates• April 2004, Ottawa

– The Dalai Lama• April 2005, Frascati

– Pope John Paul II R.I.P.

Cadcorp SIS® - Spatial Information System®

Normes de OGC: Passé, Présent et Futur

Martin DalyTechnical Director

Cadcorp LtdSIG et Interopérabilité Conference

Jeudi 12 Mai 2005