CityGML UML diagrams - as contained in CityGML Encoding Standard Version 1.0.0 - OGC Doc. No. 08-007r1

Q: What does the document describe at the top level?

It provides CityGML UML diagrams and references the CityGML Encoding Standard Version 1.0.0 (OGC Doc. No. 08-007r1), focusing on module overviews, XML namespace declarations, and UML-defined structures.

Q: Which CityGML modules and namespace prefixes are listed?

The document lists modules such as CityGML Core, Appearance, Building, CityFurniture, CityObjectGroup, Generics, LandUse, Relief, Transportation, Vegetation, and WaterBody, along with their namespace identifiers and recommended prefixes like core, app, bldg, and wtr.

Q: What UML features are included for the Building module?

It includes UML feature elements and classes such as _AbstractBuilding, _BoundarySurface (including CeilingSurface, WallSurface, and others), BuildingInstallation, BuildingFurniture, _Opening (Window, Door), core geometry objects like _CityObject and gml::MultiSurface, and the Room feature.

Oct 25, 2026

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CityGML UML diagrams present the module and class structure defined in the CityGML Encoding Standard Version 1.0.0 (OGC Doc. No. 08-007r1). The content organizes CityGML modules and their XML namespace identifiers, and includes detailed UML feature and geometry elements such as Building, BoundarySurface, BuildingInstallation, BuildingFurniture, Openings (Window, Door), and Room. It documents core concepts like boundedBy and relationships including terrain intersections and multi-surface geometry, supporting consistent modeling of 3D city objects.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages21

Reading Time53 min

AccessFree to download

CityGML modules overview, XML namespace declarations

Appearance module

Building module

Building features and surfaces

Building installations and furniture

Openings and core geometry concepts

Room feature

CityGML UML diagrams as contained in CityGML Encoding Standard Version 1.0.0, OGC Doc. No. 08-007r1 Copyright © 2008 Open Geospatial Consortium, Inc. All Rights Reserved. To obtain additional rights of use, visit [http://www.opengeospatial.org/legal/](http://www.opengeospatial.org/legal/) . Developed by the Special Interest Group 3D (SIG 3D), 2002 – 2008 [www.citygml.org](www.citygml.org) Copyright © 2008 Open Geospatial Consortium, Inc. All Rights Reserved. 1 CityGML modules overview, XML namespace declarations | CityGML module | Namespace identifier | Recommended namespace prefix | | --- | --- | --- | | CityGML Core | [http://www.opengis.net/citygml/1.0](http://www.opengis.net/citygml/1.0) | core | | Appearance | [http://www.opengis.net/citygml/appearance/1.0](http://www.opengis.net/citygml/appearance/1.0) | app | | Building | [http://www.opengis.net/citygml/building/1.0](http://www.opengis.net/citygml/building/1.0) | bldg | | CityFurniture | [http://www.opengis.net/citygml/cityfurniture/1.0](http://www.opengis.net/citygml/cityfurniture/1.0) | frn | | CityObjectGroup | [http://www.opengis.net/citygml/cityobjectgroup/1.0](http://www.opengis.net/citygml/cityobjectgroup/1.0) | grp | | Generics | [http://www.opengis.net/citygml/generics/1.0](http://www.opengis.net/citygml/generics/1.0) | gen | | LandUse | [http://www.opengis.net/citygml/landuse/1.0](http://www.opengis.net/citygml/landuse/1.0) | luse | | Relief | [http://www.opengis.net/citygml/relief/1.0](http://www.opengis.net/citygml/relief/1.0) | dem | | Transportation | [http://www.opengis.net/citygml/transportation/1.0](http://www.opengis.net/citygml/transportation/1.0) | tran | | Vegetation | [http://www.opengis.net/citygml/vegetation/1.0](http://www.opengis.net/citygml/vegetation/1.0) | veg | | WaterBody | [http://www.opengis.net/citygml/waterbody/1.0](http://www.opengis.net/citygml/waterbody/1.0) | wtr | | TexturedSurface [deprecated] | [http://www.opengis.net/citygml/texturedsurface/1.0](http://www.opengis.net/citygml/texturedsurface/1.0) | tex | Copyright © 2008 Open Geospatial Consortium, Inc. All Rights Reserved. 3 Appearance module Copyright © 2008 Open Geospatial Consortium, Inc. All Rights Reserved. 8 Building module | <>
_AbstractBuilding | | --- | | +class : BuildingClassType [0 .. 1]
+function : BuildingFunctionType [0 ..*]
+usage : BuildingUsageType [0 ..*]
+yearOfConstruction : xs::gYear [0 .. 1]
+yearOfDemolition : xs::gYear [0 .. 1]
+roofType : RoofTypeType [0 .. 1]
+measuredHeight : gml::LengthType [0 .. 1]
+storeysAboveGround : xs::nonNegativeInteger [0 .. 1]
+storeysBelowGround : xs::nonNegativeInteger [0 .. 1]
+storeysHeightsAboveGround : gml::MeasureOrNullListType [0 .. 1]
+storeysHeightsBelowGround : gml::MeasureOrNullListType [0 .. 1] | <> _BoundarySurface <> CeilingSurface <> InteriorWallSurface <> FloorSurface <> RoofSurface <> WallSurface <> GroundSurface <> ClosureSurface <> Building <> gml::MultiSurface <> gml::_Solid * boundedBy <> BuildingInstallation +class : BuildingInstallationClassType [0 .. 1]+function : BuildingInstallationFunctionType [0 ..*]+usage : BuildingInstallationUsageType [0 ..*] 0..1 * | <>
BuildingFurniture | | --- | | +class : BuildingFurnitureClassType [0 .. 1]+function : BuildingFurnitureFunctionType [0 ..*]+usage : BuildingFurnitureUsageType [0 ..*] | <> _Opening <> Window <> Door <> core::Address <> core::_CityObject <

FAQs

What does the document describe at the top level?

It provides CityGML UML diagrams and references the CityGML Encoding Standard Version 1.0.0 (OGC Doc. No. 08-007r1), focusing on module overviews, XML namespace declarations, and UML-defined structures.

Which CityGML modules and namespace prefixes are listed?

The document lists modules such as CityGML Core, Appearance, Building, CityFurniture, CityObjectGroup, Generics, LandUse, Relief, Transportation, Vegetation, and WaterBody, along with their namespace identifiers and recommended prefixes like core, app, bldg, and wtr.

What UML features are included for the Building module?

It includes UML feature elements and classes such as _AbstractBuilding, _BoundarySurface (including CeilingSurface, WallSurface, and others), BuildingInstallation, BuildingFurniture, _Opening (Window, Door), core geometry objects like _CityObject and gml::MultiSurface, and the Room feature.

Oct 25, 2026

Upload by Muffet