Package org.locationtech.jts.linearref

Contains classes and interfaces implementing linear referencing on linear geometries

Linear Referencing

Linear Referencing is a way of defining positions along linear geometries (LineStrings and MultiLineStrings). It is used extensively in linear network systems. There are numerous possible Linear Referencing Methods which can be used to define positions along linear geometry. This package supports two:

• Linear Location - a linear location is a triple (component index, segment index, segment fraction) which precisely specifies a point on a linear geometry. It allows for efficient mapping of the index value to actual coordinate values.
• Length - the natural concept of using the length along the geometry to specify a position.

Package Specification

• Java Topology Suite Technical Specifications
• OpenGIS Simple Features Specification for SQL

Class Summary

Class	Description
LengthIndexedLine	Supports linear referencing along a linear Geometry using the length along the line as the index.
LengthLocationMap	Computes the LinearLocation for a given length along a linear Geometry.
LinearGeometryBuilder	Builds a linear geometry (LineString or MultiLineString) incrementally (point-by-point).
LinearIterator	An iterator over the components and coordinates of a linear geometry (LineStrings and MultiLineStrings.
LinearLocation	Represents a location along a LineString or MultiLineString.
LocationIndexedLine	Supports linear referencing along a linear Geometry using LinearLocations as the index.