Package com.irurueta.navigation.indoor

Class WeightedKNearestNeighboursPositionSolver2D

java.lang.Object

com.irurueta.navigation.indoor.WeightedKNearestNeighboursPositionSolver<com.irurueta.geometry.Point2D>

com.irurueta.navigation.indoor.WeightedKNearestNeighboursPositionSolver2D

public class WeightedKNearestNeighboursPositionSolver2D
extends WeightedKNearestNeighboursPositionSolver<com.irurueta.geometry.Point2D>

Estimates 2D position using Wi-Fi signals indoor and the Weighted k-Nearest Neighbours (WkNN) algorithm. WkNN algorithm is based on https://github.com/ajnas/WiFiPS.

Field Summary

Fields inherited from class com.irurueta.navigation.indoor.WeightedKNearestNeighboursPositionSolver

DEFAULT_EPSILON, distances, estimatedPositionCoordinates, fingerprints, listener, locked, MIN_FINGERPRINTS

Constructor Summary

Constructors

Constructor	Description
WeightedKNearestNeighboursPositionSolver2D()	Constructor.
WeightedKNearestNeighboursPositionSolver2D(RssiFingerprintLocated<WifiAccessPoint,RssiReading<WifiAccessPoint>,com.irurueta.geometry.Point2D>[] fingerprints, double[] distances)	Constructor.
WeightedKNearestNeighboursPositionSolver2D(RssiFingerprintLocated<WifiAccessPoint,RssiReading<WifiAccessPoint>,com.irurueta.geometry.Point2D>[] fingerprints, double[] distances, WeightedKNearestNeighboursPositionSolverListener<com.irurueta.geometry.Point2D> listener)	Constructor.
WeightedKNearestNeighboursPositionSolver2D(WeightedKNearestNeighboursPositionSolverListener<com.irurueta.geometry.Point2D> listener)	Constructor.

Method Summary

Modifier and Type	Method	Description
com.irurueta.geometry.Point2D	getEstimatedPosition()	Gets estimated position.
int	getNumberOfDimensions()	Gets number of dimensions of location points.

Methods inherited from class com.irurueta.navigation.indoor.WeightedKNearestNeighboursPositionSolver

getDistances, getEpsilon, getEstimatedPosition, getEstimatedPositionCoordinates, getFingerprints, getListener, internalSetFingerprintsAndDistances, isLocked, isReady, setEpsilon, setFingerprintsAndDistances, setListener, solve

Methods inherited from class java.lang.Object

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

Constructor Details

WeightedKNearestNeighboursPositionSolver2D

public WeightedKNearestNeighboursPositionSolver2D()

Constructor.

WeightedKNearestNeighboursPositionSolver2D

public WeightedKNearestNeighboursPositionSolver2D(RssiFingerprintLocated<WifiAccessPoint,RssiReading<WifiAccessPoint>,com.irurueta.geometry.Point2D>[] fingerprints,
 double[] distances)

Constructor. Sets known located Wi-Fi fingerprints and Euclidean distances between Wi-Fi signal fingerprints.

Parameters:

fingerprints - known located Wi-Fi fingerprints.

distances - Euclidean distances between Wi-Fi signal fingerprints (expressed in dB's).

Throws:

IllegalArgumentException - if either fingerprints or distances are null, don't have the same length or their length is smaller than 1.

WeightedKNearestNeighboursPositionSolver2D

public WeightedKNearestNeighboursPositionSolver2D(WeightedKNearestNeighboursPositionSolverListener<com.irurueta.geometry.Point2D> listener)

Constructor.

Parameters:

listener - listener to be notified of events raised by this instance.

WeightedKNearestNeighboursPositionSolver2D

public WeightedKNearestNeighboursPositionSolver2D(RssiFingerprintLocated<WifiAccessPoint,RssiReading<WifiAccessPoint>,com.irurueta.geometry.Point2D>[] fingerprints,
 double[] distances,
 WeightedKNearestNeighboursPositionSolverListener<com.irurueta.geometry.Point2D> listener)

Constructor. Sets known located Wi-Fi fingerprints and Euclidean distances between Wi-Fi signal fingerprints.

Parameters:

fingerprints - known located Wi-Fi fingerprints.

distances - Euclidean distances between Wi-Fi signal fingerprints (expressed in dB's).

listener - listener to be notified of events raised by this instance.

Throws:

IllegalArgumentException - if either fingerprints or distances are null, don't have the same length or their length is smaller than 1.

Method Details

getEstimatedPosition

public com.irurueta.geometry.Point2D getEstimatedPosition()

Gets estimated position.

Specified by:

getEstimatedPosition in class WeightedKNearestNeighboursPositionSolver<com.irurueta.geometry.Point2D>

Returns:

estimated position.

getNumberOfDimensions

public int getNumberOfDimensions()

Gets number of dimensions of location points.

Specified by:

getNumberOfDimensions in class WeightedKNearestNeighboursPositionSolver<com.irurueta.geometry.Point2D>

Returns:

number of dimensions of location points.