Publication of object types at different levels of detail and their descriptions

Featuretype	LOD 0	LOD 1	LOD 2	LOD 3	Type	Description
Buildings					3D objects	completed buildings
LandUse					area	properties
PlantCover					area	parks (property of infrastructure)
Road					area	streets (property of infrastructure)
Relief					area	laser scanning 2021 (grid)
WaterBody					area	water areas from base map
CityFurniture					point	furnitures (property of infrastructure)
SolitaryVegetationObject					point	vegetation (property of infrastructure)
Generics
Cable					line-pipe	undeground cables
Pipe					line-pipe	undeground pipes (water-waist)
Heatpipe					line-pipe	undeground pipes (heat)
Well					point	wells connected to undeground pipes*
Fence					line	fences from base map

Available on open data

Open data covers geothermal wells only

Not available on open data

Buildings

An example of a building rendered at different levels of detail (LoD0–LoD3):

Building walls include wall-specific texture links (https links) to better visualise the object.

The terrain intersection line of a building (TerrainIntersection) is rendered according to the selected level of detail.

The interface will render a building at the requested level of detail. If the requested level is not available, the building will be rendered at the highest level available.***

Due to the technical solution used for building modelling, some buildings available at LoD3 are not available at LoD2, and a solid is missing from some buildings at LoD3.**

**As 3D modelling of buildings is still underway, not all buildings can be rendered at LoD2 and LoD3.

Relief

The relief model is based on a topographic model generated in 2021 with laser scanning. The grids used in Espoo’s city model are also derived from the topographic model, enabling the creation of efficient and well-functioning city model.

To ensure efficient usability, the interface service renders the relief as a grid. The sizes of the grid’s sections depend on the level of detail..

	LOD 0	LOD 1	LOD 2	LOD 3
Relief model grid size (m)	Plane 10*10	100*100	25*25	10*10

The high levels of detail are also available, if necessary. However, this may not be a suitable solution for rendering extensive areas due to the high quantity of data. Further information: Data request service

Areal objects

The relief model of a land use object area is “cut” from the relief model at the desired level of detail.

LoD0 serves as a surface whose height is determined by the height of the area’s lowest point, using a relief model determined by the selected level of detail.

Pipes and wells

The intersections below illustrate how the number of edges used to render pipes and wells vary at different levels of detail.

Object attributes

The objects of the city model also have a significant number of attributes not covered by the CityGML schema, represented as generic attributes. These generic attributes make it possible to represent objects much more specifically than the CityGML schema would otherwise allow.

Generic attributes significantly increase the potential uses of the data. If necessary, new generic attributes can be added, or the existing ones can be tailored to meet specific needs. Further information: Special materials