Class FrechetSimilarityMeasure

Measures the degree of similarity between two Geometrys using the Fréchet distance metric. The measure is normalized to lie in the range [0, 1]. Higher measures indicate a great degree of similarity.

The measure is computed by computing the Fréchet distance between the input geometries, and then normalizing this by dividing it by the diagonal distance across the envelope of the combined geometries.

Note: the input should be normalized, especially when measuring MultiPoint geometries because for the Fréchet distance the order of {@link Coordinate}s is important.

Inheritance

object

FrechetSimilarityMeasure

Implements

ISimilarityMeasure

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetTopologySuite.Algorithm.Match

Assembly: NetTopologySuite.dll

Syntax

public class FrechetSimilarityMeasure : ISimilarityMeasure

Constructors

FrechetSimilarityMeasure()

Creates an instance of this class

Declaration

public FrechetSimilarityMeasure()

Methods

Measure(Geometry, Geometry)

Function to measure the similarity between two Geometrys.

Declaration

public double Measure(Geometry g1, Geometry g2)

Parameters

Type	Name	Description
Geometry	g1	A geometry
Geometry	g2	A geometry

Returns

Type	Description
double	The similarity value between two Geometrys

Implements

ISimilarityMeasure