Download Sangha map in CityJSON format
A map built from OpenStreetMap data, ready to download
Customize the map
Open this place's area in the constructor and adjust everything to your needs
Open in constructor →Map passport
What this map contains by default
This is how the map is built as-is — every setting can be changed in the constructor.
About CityJSON
Map of Sangha in CityJSON — an export of real OpenStreetMap data for the selected area.
Export buildings to CityJSON 2.0 for 3D city modeling. Compact JSON format with vertex deduplication. Supported in 3DCityDB, QGIS 3D, ninja viewer.
Which layers are in the file
The set of layers depends on the selected area.
What this file will not contain
In CityJSON for Sangha the following will not travel: 1 822 km of roads, 17 water features, 151 375 km² of green areas, 95 points of interest — the format prints solid volumes extruded from building outlines, and other layers are not part of the model.
File size
The expected size of the CityJSON file for Sangha is about 29 KB; the exact size depends on the chosen layers and area.
Coordinate systems
WGS 84 (EPSG:4326), selectable in the wizard
Units
Meters (projected in the chosen coordinate system)
| Category | 3D |
| File extension | .city.json |
| Tier | Open Beta |
How many times CityJSON was built in the last 90 days
- Sangha
- 0
- Congo-Brazzaville
- 0
- Whole site
- 9
- Median file size
- 0.4 MB
- Median build time
- 2.7 s
Medians are based on all builds on the site
How to use CityJSON for Sangha
- ninja (a free web viewer for CityJSON) — drag the file into the browser window and see the model at once; the fastest way to check the result.
- cjio (Python, free) — the command cjio file.city.json info shows statistics and checks the structure, while export converts the model into OBJ or other formats.
- QGIS 3 — CityJSON opens through the 3D view, convenient for looking at the buildings together with the flat layers of the map.
Programs that open CityJSON
FAQ: CityJSON for Sangha
Which layers are included in the 3D model?
Only building geometry. Roads, landuse, water, and boundaries are not included in the 3D scene.
Is terrain relief included?
No, buildings sit on a flat base. Surface relief is available in the Terrain Mesh format.
How is it different from CityGML?
CityJSON is a compact JSON encoding of CityGML. Under 10% the size, easier to parse.
Can I open it in QGIS?
Yes, QGIS 3.x supports CityJSON via the 3D View.
Why are the coordinates written as integers?
That is how the format works: vertices are stored as integers, and the real meters come from multiplying by the factor in the transform block — one step equals a millimeter. Together with vertex deduplication this noticeably shrinks the file, and the precision does not suffer.
