Package org.esa.snap.core.util.math

Class CosineDistance

java.lang.Object
org.esa.snap.core.util.math.CosineDistance
All Implemented Interfaces:
DistanceMeasure
public final class CosineDistance extends Object implements DistanceMeasure
This class uses the negative cosine of the spherical distance as a distance measure between two (lon, lat) points.

This distance measure is computationally much less expensive than the spherical distance, because it is not necessary to evaluate the inverse of the cosine.

  • Constructor Summary

    Constructors
    Constructor
    Description
    CosineDistance(double lon, double lat)
    Creates a new instance of this class.

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    distance(double lon, double lat)
    Returns the distance of a given (lon, lat) point to the reference (lon, lat) point.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • CosineDistance

      public CosineDistance(double lon, double lat)
      Creates a new instance of this class.
      Parameters:
      lon - The reference longitude of this distance calculator.
      lat - The reference latitude of this distance calculator.

  • Method Details

    • distance

      public double distance(double lon, double lat)
      Returns the distance of a given (lon, lat) point to the reference (lon, lat) point.
      Specified by:
      distance in interface DistanceMeasure
      Parameters:
      lon - The longitude.
      lat - The latitude.
      Returns:
      the distance of the given (lon, lat) point to the reference (lon, lat) point.