Geography Markup Language

1) Overview
2) Downloads
3) Official Schemas
4) Related News

1) Overview

The OpenGIS® Geography Markup Language Encoding Standard (GML) The Geography Markup Language (GML) is an XML grammar for expressing geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Internet. As with most XML based grammars, there are two parts to the grammar – the schema that describes the document and the instance document that contains the actual data. A GML document is described using a GML Schema. This allows users and developers to describe generic geographic data sets that contain points, lines and polygons. However, the developers of GML envision communities working to define community-specific application schemas [en.wikipedia.org/wiki/GML_Application_Schemas] that are specialized extensions of GML. Using application schemas, users can refer to roads, highways, and bridges instead of points, lines and polygons. If everyone in a community agrees to use the same schemas they can exchange data easily and be sure that a road is still a road when they view it. Clients and servers with interfaces that implement the OpenGIS® Web Feature Service Interface Standard[http://www.opengeospatial.org/standards/wfs] read and write GML data. GML is also an ISO standard (ISO 19136:2007) [www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=32554 ]. See also the GML pages on OGC Network: http://www.ogcnetwork.net/gml .

2) Downloads

Version Document Title (click to download) Document # Type
 3.3 OGC® Geography Markup Language (GML) - Extended schemas and encoding rules  10-129r1 IS
 3.2.1 OpenGIS Geography Markup Language (GML) Encoding Standard  07-036 IS
  Revision Notes for OpenGIS® Implementation Specification: Geographic information - Geography Markup Language Version 3.2.1 (3.2.1) 07-061 Notes
  OGC® OWS-5 Engineering Report: Local MSD Implementation Profile (GML 3.2.1) (0.0.2) 08-077 DP
  Technical Committee Policies and Procedures: MIME Media Types for GML (1.0.0) 09-144r1 POL
  OGC® GML Application Schema - Coverages (1.0) 09-146r1 D-SAP
  OGC® GML Application Schema - Coverages (1.0.1) 09-146r2 SAP
  Geography Markup Language (GML) simple features profile (2.0) 10-100r2 D-Profile
  Revision Notes for OpenGIS® Implementation Specification: Geography Markup Language (GML) simple features profile v2.0 (2.0) 10-099r2 Notes
  Geography Markup Language (GML) simple features profile (with Corrigendum) (2.0) 10-100r3 Profile
  OGC Geography Markup Language (GML) simple features profile Technical Note (2.0) 11-044 Notes
 3.1.1 OpenGIS Geography Markup Language (GML) Encoding Specification  03-105r1 D-BP
  City Geography Markup Language (0.4.0) 07-062 D-BP
  City Geography Markup Language (0.3.0) 06-057r1 D-DP
  GML 3.1.1 common CRSs profile (1.0.0) 05-095r1 Profile
  GML 3.1.1 common CRSs profile Corrigendum (1.0.1) 06-113 PC
  GML 3.1.1 CRS support profile (1.0.0) 05-094r1 Profile
  GML Application Schema for EO Products (0.9.0) 06-080r2 D-BP
  GML Application Schema for EO Products (0.1.4) 06-080r1 D-DP
  GML Application Schema for EO Products (0.1.1) 06-080 D-DP
  GML 3.1.1 grid CRSs profile (1.0.0) 05-096r1 Profile
  GML 3.1.1 grid CRSs Profile Corrigendum (1.0.1) 06-111 PC
  GML PIDF-LO Geometry Shape Application Schema for use in the IETF (0.1.0) 06-142r1 BP
  GML 3.1.1 simple dictionary profile (1.0.0) 05-099r2 Profile
  GML 3.1.1 simple features profile (1.0.0) 06-049r1 D-Profile
 3.0 OpenGIS Geography Markup Language (GML) Encoding Specification  02-023r4 D-IS
 2.1.2 Geography Markup Language  02-069 D-IS
  Corrigendum 1 (one) for OpenGIS Implementation Specification GML 2.1.2 (0.0.1) 06-189 D-ISC
 2.1.1 Geography Markup Language  02-009 D-IS
 2.0 Geography Markup Language  01-029 D-RP
 1.0.0 OpenGIS GML in JPEG 2000 for Geographic Imagery Encoding Specification  05-047r3 IS
 1.0.0 GML Performance Investigations by CubeWerx  05-050 DP
 1.0 Geography Markup Language  00-029 D-RP
 0.4 GML Point Profile  05-029r4 DP
 0.3.0 GML in JPEG 2000 for Geographic Imagery  05-047r2 D-RFC
 0.3.0 OWS-6 GML Profile Validation Tool ER  09-038r1 PER
 0.0.5 OWS3 GML Topology Investigation  05-102r1 DP
 0.0.4 OWS 3 GML Investigations - Performance Experiment by Galdos Systems  05-101 DP
 0.0.19 GML simple features profile  05-033r9 D-RFC
  Guidance and Profile of GML for use with Aviation Data  12-028 DP

 

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3) Official Schemas



Note: You may also download All Official OGC Schemas in a single zip file.

4) Related News

The OGC invites comments on the candidate IndoorGML navigation standard  2014-02-19 
OGC invites Mobile World Congress attendees to GeoPackage and IndoorGML workshops and an Augmented Reality interoperability demo  2014-02-18 
The OGC seeks comment on revised GML in JPEG 2000 Encoding Standard  2014-02-17 
OGC , SIG 3D, and TUM announce workshop to gather CityGML requirements  2013-05-29 
OGC Seeks Comments on "NIL Extension" to Geography Markup Language (GML)  2012-11-16 
The OGC seeks comment on GML Coverages GeoTIFF extension and WCS 2.0 GeoTIFF extension standard  2012-11-16 
The OGC Forms IndoorGML Indoor Location Standards Working Group  2012-01-20 
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