Vagueness zones, interpreted lines (open data)

Vagueness zones are based, inter alia, on subsoil information from different constructions, such as tunnels, and other data such as altitude data and geophysics. Each weakness zone is described by different parameters and the amount of information underlying the safety of the observation, which is referred to as confidence. In zones with high confidence, links to various observations, objects or references are made. These zones also include information on the slope and the estimated width of the zone. For 3D visualisation, the direction of the zone (deletion) is also specified to know the direction in which the zone inclines according to the right hand rule. In the first place, the information is limited to Stockholm but later extended to cover other areas in Sweden with a need for more detailed information.