News Archive

June 13, 2008

• The final vote on CityGML 1.0 for adoption as OGC International Standard has been launched within the OGC Technical Committee. The adaption vote coincides with a 60 day Intellectual Property Rights (IPR) consideration period, and thus is due by August 12, 2008.

June 8, 2009

• The Special Interest Group 3D (SIG 3D) announces the release of the SubsurfaceStructureADE. The SubsurfaceStructureADE is a CityGML extension for the representation of man-made subsurface objects accessible by humans such as tunnels, underground stations, and pedestrian subways. The ADE introduces new city object types and also augments existing CityGML features. A first stable version of the UML data model and the derived XML Schema document as well as example datasets are available at the CityGML ADE section of this Wiki.

June 8, 2009

• A CityGML discussion forum has been launched. The forum is open to everybody and is meant to be an additional point for getting and sharing information about CityGML. It contains sections for general questions and answers, discussions on future CityGML versions, and serves as a platform for the international alignment of CityGML Application Domain Extensions (ADE). Anyone is invited to participate and contribute. The forum can be accessed at http://forum.citygmlwiki.org/.

October 29, 2009

• The OGC has posted the official CityGML version 1.0.0 schemas to http://schemas.opengis.net/citygml/. These schemas shall be used for XML validation of CityGML 1.0.0 instance documents. For valid documents, please make sure to use the official XML namespace identifier and schemaLocations of the CityGML 1.0.0 modules. An overview of the XML namespaces and schemaLocations can be found here.

August 20, 2009

• The members of the Open Geospatial Consortium, Inc. (OGC) have adopted version 1.0.0 of CityGML as an official OGC Standard (official OGC press release). Over the last 9 months the CityGML SWG has done a lot of work on finally bringing CityGML to an adopted international standard. Many thanks go to the members of the CityGML SWG, to the members of the SIG 3D, and to the whole CityGML community for the support and effort in making this happen.

• The final CityGML version 1.0.0 Standard document can be obtained from the CityGML section of the OGC web presence (direct download link). The CityGML XML Schema definition files will be published shortly by the OGC.

May 19, 2008

• The OGC has announced the next OGC Interoperability Days to be held on Tuesday and Wednesday, June 3 and 4, 2008, in Potsdam, Germany (official OGC press release). CityGML will be an agenda highlight for the Technical Interoperability Day on Tuesday. The SIG 3D has been granted a considerable time slot for presentations and real world examples on CityGML. The OGC Interoperability Days are open both for OGC members and non OGC members. On both days, attendance is free and attendees will have opportunities to attend company and project presentations.

• Detailed program and registration information are available at http://www.opengeospatial.org/event/080603techinterop and http://www.opengeospatial.org/event/080604interop. Please note, that registration is free, but attendees must register separately for each day. The event will be held at GFZ Potsdam, Telegrafenberg 326, 14473 Potsdam, www.gfz-potsdam.de.

February 19, 2008

• The OGC has opened the 30-days public comment phase on the candidate CityGML version 1.0 Encoding Standard (official OGC press release). The public is thereby requested to submit comments on the draft CityGML version 1.0 specification to the OGC. The corresponding Request for Comment (RFC) can be downloaded from http://www.opengeospatial.org/standards/requests/47. Comments are due by March 20, 2008.

November 27, 2007

• A CityGML Standards Working Group (SWG) has been formed within the OGC. The purpose of this Standards Working Group is to progress the CityGML version 0.4.0 Best Practices document (OGC Doc. No. 07-062) to the state of an adopted OGC standard. The SWG is chaired by Ordnance Survey, Great Britain, and co-chaired by Technische Universität Berlin, Germany.

July 12, 2007

• The OGC Technical Committee has approved the CityGML Specification version 0.4.0 as an OGC Best Practices Paper at its meeting in Paris. Therefore, CityGML is an official position of the OGC membership on 3D city modelling. The Specification document (OGC Document No. 07-062, PDF 9.8MB) can be freely downloaded from the Best Practices Paper section of the Open Geospatial Consortium website. Within OGC, CityGML is discussed and further developed within the 3D Information Management (3DIM) Working Group (formerly CAD/GIS Interoperability Working Group).

• A Change Document tracking the changes from the previous CityGML version 0.3.0 (OGC Document No. 06-057r1, PDF 3.1MB) to CityGML version 0.4.0 can be obtained here (PDF 4MB). Please note, that this document is not an official part of the CityGML Specification. It is only intended to give an informative and informal overview of the significant changes and to reflect the discussions on received change proposals and comments.