OGC Implementation Specifications
The new OGC StandardsTracker has been developed to replace the old Change Request Tool. You can now view or submit new issues or change requests via the same tool.
You will need to create an account to get started with a submission of a change request.
The below PDF documents were produced from the old tool and are available either in PDF or in the new StandardsTracker.
CityGML is an open data model and XML-based format for the storage and exchange of virtual 3D city models. It is an application schema for the Geography Markup Language version 3.1.1 (GML3), the extendible international standard for spatial data exchange issued by the Open Geospatial Consortium (OGC) and the ISO TC211. The aim of the development of CityGML is to reach a common definition of the basic entities, attributes, and relations of a 3D city model. This is especially important with respect to the cost-effective sustainable maintenance of 3D city models, allowing the reuse of the same...