de.lmu.ifi.dbs.elki.database.query.distance
Class SpatialPrimitiveDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

java.lang.Object
  de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery<O>
      de.lmu.ifi.dbs.elki.database.query.distance.AbstractDistanceQuery<O,D>
          de.lmu.ifi.dbs.elki.database.query.distance.PrimitiveDistanceQuery<V,D>
              de.lmu.ifi.dbs.elki.database.query.distance.SpatialPrimitiveDistanceQuery<V,D>

Type Parameters:

V - Vector type to use

D - Distance result type

All Implemented Interfaces:

DatabaseQuery, DistanceQuery<V,D>, SpatialDistanceQuery<V,D>

public class SpatialPrimitiveDistanceQuery<V extends SpatialComparable,D extends Distance<D>>
extends PrimitiveDistanceQuery<V,D>
implements SpatialDistanceQuery<V,D>

Distance query for spatial distance functions

Field Summary

protected SpatialPrimitiveDistanceFunction<? super V,D>

distanceFunction The distance function we use.

Fields inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

relation

Fields inherited from interface de.lmu.ifi.dbs.elki.database.query.DatabaseQuery

HINT_BULK, HINT_EXACT, HINT_HEAVY_USE, HINT_NO_CACHE, HINT_OPTIMIZED_ONLY, HINT_SINGLE

Constructor Summary

SpatialPrimitiveDistanceQuery(Relation<? extends V> relation, SpatialPrimitiveDistanceFunction<? super V,D> distanceFunction)

Method Summary

D	centerDistance(SpatialComparable mbr1, SpatialComparable mbr2) Computes the distance between the centroids of the two given MBRs according to this distance function.
SpatialPrimitiveDistanceFunction<? super V,D>	getDistanceFunction() Get the inner distance function.
D	mbrDist(SpatialComparable mbr1, SpatialComparable mbr2) Computes the distance between the two given MBRs according to this distance function.
D	minDist(SpatialComparable mbr, DBID id) Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.
D	minDist(SpatialComparable mbr, V v) Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.distance.PrimitiveDistanceQuery

distance, distance, distance, distance

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.distance.AbstractDistanceQuery

getDistanceFactory, infiniteDistance, nullDistance, undefinedDistance

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

getRelation

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.database.query.distance.DistanceQuery

distance, distance, distance, distance, getDistanceFactory, getRelation, infiniteDistance, nullDistance, undefinedDistance

Field Detail

distanceFunction

protected final SpatialPrimitiveDistanceFunction<? super V extends SpatialComparable,D extends Distance<D>> distanceFunction

The distance function we use.

Constructor Detail

SpatialPrimitiveDistanceQuery

public SpatialPrimitiveDistanceQuery(Relation<? extends V> relation,
                                     SpatialPrimitiveDistanceFunction<? super V,D> distanceFunction)

Parameters:

relation - Representation to use

distanceFunction - Distance function to use

Method Detail

centerDistance

public D centerDistance(SpatialComparable mbr1,
                        SpatialComparable mbr2)

Description copied from interface: SpatialDistanceQuery

Computes the distance between the centroids of the two given MBRs according to this distance function.

Specified by:

centerDistance in interface SpatialDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Parameters:

mbr1 - the first MBR object

mbr2 - the second MBR object

Returns:

the distance between the centroids of the two given MBRs according to this distance function

mbrDist

public D mbrDist(SpatialComparable mbr1,
                 SpatialComparable mbr2)

Description copied from interface: SpatialDistanceQuery

Computes the distance between the two given MBRs according to this distance function.

Specified by:

mbrDist in interface SpatialDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Parameters:

mbr1 - the first MBR object

mbr2 - the second MBR object

Returns:

the distance between the two given MBRs according to this distance function

minDist

public D minDist(SpatialComparable mbr,
                 V v)

Description copied from interface: SpatialDistanceQuery

Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.

Specified by:

minDist in interface SpatialDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Parameters:

mbr - the MBR object

v - the FeatureVector object

Returns:

the minimum distance between the given MBR and the FeatureVector object according to this distance function

minDist

public D minDist(SpatialComparable mbr,
                 DBID id)

Description copied from interface: SpatialDistanceQuery

Computes the minimum distance between the given MBR and the FeatureVector object according to this distance function.

Specified by:

minDist in interface SpatialDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Parameters:

mbr - the MBR object

id - the query object id

Returns:

the minimum distance between the given MBR and the FeatureVector object according to this distance function

getDistanceFunction

public SpatialPrimitiveDistanceFunction<? super V,D> getDistanceFunction()

Description copied from interface: DistanceQuery

Get the inner distance function.

Specified by:

getDistanceFunction in interface DistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Specified by:

getDistanceFunction in interface SpatialDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Overrides:

getDistanceFunction in class PrimitiveDistanceQuery<V extends SpatialComparable,D extends Distance<D>>

Returns:

Distance function