Height transformation model (NNTrans)

If you wish to use older height data in combination with map data produced after the transition to NN2000, a location-dependent map transformation has to be executed. For a smaller area, e.g. 300 x 300 metres, most people will be able to convert their own data with centimetre accuracy as a simple "height shift". Contact the municipality or the nearest county map office to find out the extent of the difference between the old and new height systems in your area, and convert the data using the formula NN2000=NN1954 +/- X cm. If you're working with a larger area, e.g. municipality-wide datasets, you can transform the data using a model file (.bin file) and suitable software. The .bin file can be downloaded here.

Status: Submitted

Submitter: Norwegian Mapping Authority

Owner: Norwegian Mapping Authority

Version number 1

Updated: 4/8/2020 4:14:22 AM

Theme: Base maps

In scope of Inspire Directive: No

DOK according to KMD-definitions: No

In scope of Norway digital agreement: Yes

Land-use plans subject to law (PBL): No

In scope of the Geodata Act: No

Mareano: No

Ecological Base Map: No

DOK-status

DOK-status: Proposal

DOK-status date approved:

Updated: 4/8/2020 4:14:22 AM

Geodatalov status

ASSESSMENT POINT
STATUS VALUE
COMMENT
Metadata
useable
Product spesification
deficient
SOSI requirement status
deficient
GML requirement status
deficient
WMS status
deficient
WFS status
deficient
ATOM feed status
deficient
Nedlastingskrav status
deficient