CityGML (OGC 3D City Model)
Price before paymentHamisha majengo ya 3D kwenda CityGML — kiwango cha OGC kwa vielelezo vya miji vya 3D. Umbizo la XML lenye LOD 1 (vielelezo vya majengo ya kizuizi). Linatumika katika upangaji wa miji, uchanganuzi wa GIS, na usimamizi wa miji.
OpenStreetMap data as of 5 October 2026 · 25 days ago
Vipengele Muhimu
Kuhusu Muundo wa CityGML
CityGML is an OGC standard for semantic 3D city models. It differs from an ordinary 3D mesh in that a building here is not just a set of triangles but an object with meaning: it has walls, a roof, a height, a floor count and a function. That is exactly why the format took root in urban planning and city computations rather than in visualization.
A map is exported to CityGML when a 3D city is needed for analysis: calculating insolation and solar panel potential, modeling noise, assessing density and building volumes, loading into a city database. Such tasks need attributes, not a pretty picture.
The output is a single CityGML 2.0 XML file: buildings at LOD1 detail, that is, as closed volumes extruded from OSM outlines by height or floor count, with correctly oriented floor, wall and roof faces. Every building records its measured height, the number of floors and a function code derived from OSM tags. Coordinates are WGS84 (EPSG:4326) by default, and the coordinate system is stated in the file itself.
Pitched roofs, facade details and interior rooms are absent from LOD1 by definition — this is the level of boxes. More detailed models require source data that simply does not exist in OpenStreetMap.
Programu Gani Hufungua Faili za CityGML
Programu na programu-tumizi zifuatazo zinaweza kufungua, kuhariri, na kufanya kazi na faili za CityGML (OGC 3D City Model) (.gml) zilizosafirishwa kutoka OSM2CDR:
Format specifications
- Open standard
- 3D coordinates supported
- Lossless (no quality loss)
- Stores feature attributes
- Output: 1 file
- CityGML 2.0 (OGC 12-019). XML-based 3D city model standard; buildings as LOD 1 solids. Opens in FZK Viewer, FME, QGIS. The ground under buildings is flat (z = 0): terrain is not applied — use the separate Terrain Mesh format for relief.
Nani Hutumia Ramani za CityGML
Jinsi ya Kusafirisha CityGML
Jinsi ya Kufungua Baada ya Kuhamisha
- FZK Viewer (free) — open the file and make sure the model reads and the attributes are in place; a convenient first check before loading it anywhere.
- 3DCityDB — import through the Importer/Exporter into PostgreSQL with PostGIS, after which the city is available through ordinary SQL queries.
- FME — transformation and conversion: CityGML is easily turned into CityJSON, IFC or shapefiles to match the requirements of a particular project.
- citygml-tools (free, command line) — validation of the file and conversion into CityJSON, if the receiving side expects JSON.
- QGIS and ArcGIS Pro — read CityGML for checking and for showing it together with other city layers.
Ramani maarufu katika CityGML
Pata usafirishaji wa ramani za CityGML (OGC 3D City Model)
Pakua ramani za kitaalamu za CityGML kutoka OpenStreetMap. Uzalishaji wa papo hapo, eneo lolote.
Maswali Yanayoulizwa Mara kwa Mara
Miundo Inayohusiana
Husafirishwa Pamoja Mara kwa Mara
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