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

Class OPTICSXi.SteepScanPosition

java.lang.Object

de.lmu.ifi.dbs.elki.algorithm.clustering.optics.OPTICSXi.SteepScanPosition

Enclosing class:

OPTICSXi

private static class OPTICSXi.SteepScanPosition
extends java.lang.Object

Position when scanning for steep areas

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ClusterOrder	co Cluster order
private DBIDArrayIter	cur Variable for accessing.
(package private) int	index Current position
private DBIDArrayIter	next Variable for accessing.

Constructor Summary

Constructors

Constructor and Description
SteepScanPosition(ClusterOrder co) Constructor.

Method Summary

Modifier and Type	Method and Description
double	getNextReachability() Get current reachability.
double	getReachability() Get current reachability.
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

ClusterOrder co

Cluster order

index

int index

Current position

cur

private DBIDArrayIter cur

Variable for accessing.

next

private DBIDArrayIter next

Variable for accessing.

Constructor Detail

SteepScanPosition

public SteepScanPosition(ClusterOrder 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

getReachability

public double getReachability()

Get current reachability.

Returns:

Reachability

getNextReachability

public double getNextReachability()

Get current reachability.

Returns:

Reachability