de.lmu.ifi.dbs.elki.algorithm.clustering

Class OPTICSXi.SteepScanPosition<N extends NumberDistance<N,?>>

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.clustering.OPTICSXi.SteepScanPosition<N>

Type Parameters:

N - Distance type

Enclosing class:

OPTICSXi<N extends NumberDistance<N,?>>

private static class OPTICSXi.SteepScanPosition<N extends NumberDistance<N,?>>
extends Object

Position when scanning for steep areas

Field Summary

Fields

Modifier and Type	Field and Description
(package private) List<ClusterOrderEntry<N>>	co Cluster order
(package private) ClusterOrderEntry<N>	ecurr Current entry
(package private) ClusterOrderEntry<N>	esucc Next entry
(package private) int	index Current position

Constructor Summary

Constructors

Constructor and Description
OPTICSXi.SteepScanPosition(List<ClusterOrderEntry<N>> co) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext() Test whether there is a next value.
void	next() Advance to the next entry
boolean	steepDown(double ixi) Test for a steep down area.
boolean	steepUp(double ixi) Test for a steep up point.

Methods inherited from class java.lang.Object

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

Field Detail

co

List<ClusterOrderEntry<N extends NumberDistance<N,?>>> co

Cluster order

index

int index

Current position

ecurr

ClusterOrderEntry<N extends NumberDistance<N,?>> ecurr

Current entry

esucc

ClusterOrderEntry<N extends NumberDistance<N,?>> esucc

Next entry

Constructor Detail

OPTICSXi.SteepScanPosition

public OPTICSXi.SteepScanPosition(List<ClusterOrderEntry<N>> co)

Constructor.

Parameters:

co - Cluster order

Method Detail

next

public void next()

Advance to the next entry

hasNext

public boolean hasNext()

Test whether there is a next value.

Returns:

end of cluster order

steepUp

public boolean steepUp(double ixi)

Test for a steep up point.

Parameters:

ixi - steepness factor (1-xi)

Returns:

truth value

steepDown

public boolean steepDown(double ixi)

Test for a steep down area.

Parameters:

ixi - Steepness factor (1-xi)

Returns:

truth value