Home › value › cft_20
Straight (CFT_20)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: cft_20.ttl
- Name
straight- Attribute
- CFT Boundary Determination Method
- Definition
- A boundary defined by the shortest path between two points.
- Description
- As the shape of the earth is curved, 'straight' is dependent on how the curvature is distorted by a map projection. At large scales and short distances 'straight lines' in all map projections are equivalent; at small scales the curvature of the surface of the earth allows for a variety of approximations to 'straight', for example a geodesic line and a great circle line.
- Accepted
- 2013-10-18
- Allowed for
- FA000 Administrative Boundary
- FC021 Maritime Limit
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.