Geospatial base data
As geodata data with coordinates for positioning of geo data referred to. For official geospatial reference data, the exact definition depends on the laws of the respective country.
Germany
Geospatial base data are points, lines or areas which describe the location ( georeference ) of administrative, technical or natural boundaries in the landscape ( topography ) in an application-neutral manner. These include, for example, addresses and other location coordinates (points), rivers, streets and other traffic routes (lines) or national borders, properties and buildings (areas). Only data collected and published by a surveying office are official geospatial base data.
In addition to the geospatial base data, there is the geospatial data . Geospatial data alone cannot be interpreted or can only be interpreted with difficulty without geospatial reference data because there is no clear spatial allocation (georeference). Thematic maps or corresponding tables are an example of the combination of geospatial base and geospatial data.
The Working Committee of the Surveying Authorities of the States of the Federal Republic of Germany (AdV) has defined at its plenary session on 28 and 29 September, 2005 in Magdeburg for the survey that geodata evidence of official surveying and mapping the landscape, the estate and the uniform space geodetic reference application-neutral and describe . They are the basis for specialist applications with a spatial reference.
Switzerland
In contrast to this, the term geographic reference data is legally defined in Switzerland as “geodata based on a statutory decree of the federal government, the canton or a municipality.” The entirety of the geographic reference data is considered to be the material scope of the Federal Act on Geographic Information and is in the form of a catalog ( Geospatial reference catalog ) issued. Such geographic reference data catalogs are available at the level of the Swiss Confederation, the cantons and the communes .
Web links
- Working group of the surveying administrations of the federal states of the Federal Republic of Germany
- Geographic information law in Switzerland
- Information on the geographic base data of the Swiss Confederation
- Geospatial reference data catalogs for Switzerland (online)