[OSGeo-Standards] FYI: OGC Seeks Comment on Geography Markup Language 3.3 Candidate Standard

Carl Reed creed at opengeospatial.org
Tue Jul 5 16:51:32 EDT 2011

----- Original Message ----- 
From: "OGC Press Release" <announce at opengeospatial.org>
To: <tc at lists.opengeospatial.org>; <pc at lists.opengeospatial.org>
Sent: Tuesday, July 05, 2011 12:41 PM
Subject: [Tc] OGC Seeks Comment on Geography Markup Language 3.3 Standard

For information about this announcement, contact:

info at opengeospatial.org


5 July 2011. The Open Geospatial Consortium (OGC®) seeks
public comment on the candidate version 3.3 of the OGC Geography
Markup Language (GML). GML 3.3 builds on GML 3.2.1, published by ISO
as ISO 19136:2007, and extends GML with additional schema components
based on requirements requested by various domains of
interest. For example, the 3d modeling community suggest the
addition of triangular meshes (TINs) to GML. GML 3.3 is fully
backwards compatible with GML 3.2.

GML defines an XML data encoding for geographic data and a
grammar to express models of such data using XML Schema. GML has
come into wide use since it was first adopted as an OGC standard in
2001 (  http://www.ogcnetwork.net/gmlprofiles  for examples). GML is the
standard that enables information communities and other standards
organizations such as the Internet Engineering Task Force (IETF) and
OASIS to insert geospatial elements into their standards and be
confident that their standards will be compatible with mainstream
information infrastructure methods of conveying spatial/temporal

Some of the changes between the previous version 3.2.1 and 3.3 are:

-  Support for additional date representations based on ISO 8601 (
  Representation of dates and times)
-  Support for an additional, compact encoding of commonly used
  geometry types
-  Support for a new encoding of Triangulated Irregular Networks
-  Support for Linear Referencing
-  Extensions to the XML encoding rule
-  Support for grids used by the meteorological and ocean observation

All extensions are made in separate XML namespaces to support a
modular use of components from the GML schema.

Information on the change requests addressed in GML v3.3 can be found
The candidate OGC GML v3.3 Standard documents are available for review
and comment at   http://www.opengeospatial.org/standards/requests/79.

The OGC is an international consortium of more than 415 companies,
government agencies, research organizations, and universities
participating in a consensus process to develop publicly available
geospatial standards. OGC Standards support interoperable solutions
that "geo-enable" the Web, wireless and location-based services, and
mainstream IT. OGC Standards empower technology developers to make
geospatial information and services accessible and useful with any
application that needs to be geospatially enabled. Visit the OGC
website at http://www.opengeospatial.org.

Tc mailing list
Tc at lists.opengeospatial.org

All OGC members are strongly encouraged to maintain a subscription to this 

More information about the Standards mailing list