The Linear Reference System (LRS) is a system where features (points or segments) are localised by a measure along a linear element. The LRS is suitable for management of data related to linear features like roads, railways and rivers. It is particularly important for network registers (e.g. roads) and traffic related studies (e.g. traffic accident studies). The presentation describes a first implementation of the LRS in GRASS. A data model and the new modules v.lrs.create, v.lrs.segment, v.lrs.stationing, v.lrs.where are discussed. These modules can be used to generate the LRS from input linear layer and mileposts, to georeference points and segments from the LRS to 2D/3D space and query LRS measure for points in 2D plane. Example will be given for a large scale project MITRIS, in which thousands of events have been automatically georeferenced via LRS
Introducing the Linear Reference system in GRASS
Blazek, Radim
2004-01-01
Abstract
The Linear Reference System (LRS) is a system where features (points or segments) are localised by a measure along a linear element. The LRS is suitable for management of data related to linear features like roads, railways and rivers. It is particularly important for network registers (e.g. roads) and traffic related studies (e.g. traffic accident studies). The presentation describes a first implementation of the LRS in GRASS. A data model and the new modules v.lrs.create, v.lrs.segment, v.lrs.stationing, v.lrs.where are discussed. These modules can be used to generate the LRS from input linear layer and mileposts, to georeference points and segments from the LRS to 2D/3D space and query LRS measure for points in 2D plane. Example will be given for a large scale project MITRIS, in which thousands of events have been automatically georeferenced via LRSI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
