Control points

Control points and their coordinates and elevations define in practice the reference system for coordinates and elevations used in Finland.

The NLS benchmark register contains information about nationwide control points and benchmarks. The marks are mainly horizontal and elevation control points in classes 1–3 measured by the National Land Survey of Finland.

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

Date (Publication): 1970-01-01

Identifier: FI / 1000004

Purpose: Control points can be used as starting points in surveying and as anchor points in coordinate and height transformations.

Owner

National Land Survey of Finland

Maintenance and update frequency: Continual

Maintenance note: The NLS benchmark register is updated once a year at the beginning of the year.

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

National Land Survey of Finland -

Paikkatietohakemiston asiasanasto

Not-Inspire
Elevation control points
avoindata.fi
Control points

GEMET - INSPIRE themes, version 1.0

Elevation

Alueellinen laajuus

National

Access constraints: Other restrictions

Other constraints: no limitations to public access

Other constraints: Copyright and other immaterial rights on the dataset Control points are owned by the agencies that have made the measurements. The data material is not confidential. Public access to the material is not restricted by the INSPIRE Directive.

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: Text, table

Denominator: 10000

Metadata language: Finnish

Topic category

Elevation

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

Reference system identifier: EPSG / KKJ / Finland Uniform Coordinate System (EPSG:2393) / 8.6

Reference system identifier: EPSG / N2000 height (EPSG:3900) / 8.6

Reference system identifier: EPSG / N60 height (EPSG:5717) / 8.6

Topology level: Geometry only

Geometric object type: Point

Distribution format

csv-file ( 1 )
GeoPackage ( )

Owner

National Land Survey of Finland - ( )

OnLine resource: MapSite Download geospatial data -section

OnLine resource

The property information service Kiinteistötietopalvelu (in Finnish) ( WWW:LINK-1.0-http--link )

The property information service Kiinteistötietopalvelu (in Finnish)

OnLine resource: Paikkatiedon tiedostopalvelu (OGC API Processes) ( http://www.opengis.net/def/serviceType/ogc/wfs )

Hierarchy level: Dataset

Conformance result

Date (Publication): 2011-02-22

Pass: No

Statement: Earlier, the method used for determining horizontal control points was triangulation but now satellite surveying is used. The elevation control points have been determined by levelling. The dataset Control points contains points with different levels of accuracy; the information about the accuracy class is included in the control point information.

Included with dataset: No

Date (Revision): 2021-03-26

Other citation details: The control point data includes the coordinates (coordinate reference systems: EUREF-FIN and KKJ = the national grid coordinate system) and the elevation of the points (height systems: N2000 and N60) as well as their other attributes. The attributes include for example information of measurement method of coordinate and height values. Codes can be seen in code catalogue page: http://luettelopalvelu.fi/codelist