Buildings 3D

The 3D vectors for buildings are three-dimensional instances of the Building target category in the National Topographic Database (KMTK). The 3D vectors are produced with a high degree of automation from laser scanning data 5 p based on 2D vectors for buildings in KMTK. For the time being, data is available only from a few example areas, but the coverage will be extended to the whole of Finland as the laser scanning programme proceeds.

The product belongs to the open data of the National Land Survey of Finland.

Date (Publication): 2022-01-27

Identifier: FI / 1001117

Purpose: The 3D vectors for buildings can be used as the source data for a visual cityscape and utilised in land use planning and analyses related to determining the solar energy potential of buildings, for example.

Owner

National Land Survey of Finland

Maintenance and update frequency: Annually

Maintenance note: The product is updated annually according to the laser scanning of the previous season. Map of the current status: https://tilannekartta.maanmittauslaitos.fi/3drakennukset

The product is available from the NLS MapSite's Download geospatial data -section according to the above-described updating rhythm.

Owner

National Land Survey of Finland - ( )

GEMET - INSPIRE themes, version 1.0

Buildings

Paikkatietohakemiston asiasanasto

avoindata.fi
Buildings

Alueellinen laajuus

National

Access constraints: Other restrictions

Other constraints: no limitations to public access

Use constraints: Other restrictions

Other constraints: Attribution 4.0 International (CC BY 4.0)

Other constraints: Mention the name of the Licensor (the National Land Survey of Finland), the name of the dataset(s) and the time when the National Land Survey has delivered the dataset(s) (e.g.: contains data from the National Land Survey of Finland Topographic Database 06/2014).

Spatial representation type: Vector

Metadata language: Finnish

Metadata language: swe

Character set: 8859 Part 10

Character set: 8859 Part 15

Topic category

Structure

Reference system identifier: EPSG / ETRS89 / TM35FIN(E,N) (EPSG:3067) / 8.6

Unique resource identifier: EPSG:3900

Topology level: Full surface graph

Distribution format

CityGML ( )

National Land Survey of Finland - ( )

Transfer size: 1000

OnLine resource: MapSite Download geospatial data section

OnLine resource: Paikkatiedon tiedostopalvelu (OGC API Processes) ( WWW:LINK-1.0-http--link )

Hierarchy level: Dataset

Conformance result

Date (Publication): 2010-01-07

Explanation: Tuote ei täytä määrittelyjä.

Pass: No

Statement: At this stage, quality requirements have not been defined for 3D vectors for buildings produced by the National Land Survey of Finland. The generation of the data is highly automated.

Factors that affect the quality of the data include:

Vectoring logic

- 3D vectors are produced based on a data-driven process

2D vectors

- The generation of the data is based on 2D vectors for buildings, which means that the location accuracy of the data on which these two data types are based is identical.

Point cloud data

- The quality of point cloud data affects the quality of 3D vectors.

The data is geometrically complete and, taking into account the above-mentioned factors, tries to model reality as accurately as possible.

Included with dataset: No

Date (Publication): 2020-05-11

Other citation details: The produced building 3D vectors have been modelled in accordance with the recommendation JHS210 Paikkatiedon mallintaminen: Rakennukset ja rakennelmat (Spatial data modelling: buildings and structures) https://geoforum.fi/jhs-210-paikkatiedon-mallintaminen-rakennukset-ja-rakennelmat/

The 3D vectors correspond to level of detail 2 (LoD2), and their surfaces have been supplemented with semantic information about the surface type (floor, ceiling, wall).