edu.stanford.math.plex

Class PersistenceBasisInterval

java.lang.Object

edu.stanford.math.plex.PersistenceBasisInterval

All Implemented Interfaces:

java.lang.Comparable<PersistenceBasisInterval>

Direct Known Subclasses:

PersistenceBasisInterval.Float, PersistenceBasisInterval.Int

public abstract class PersistenceBasisInterval
extends java.lang.Object
implements java.lang.Comparable<PersistenceBasisInterval>

PersistenceBasisInterval instances encode a dimension and a duration (e.g., start and end times) as well as a basis element for each interval. The integer start/end times are used internally in the Persistence class, but these may be converted to form that uses doubles for start/end.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PersistenceBasisInterval.Float
static class	PersistenceBasisInterval.Int

Field Summary

Fields

Modifier and Type	Field and Description
int	dimension The dimension of the PersistenceBasisInterval.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PersistenceBasisInterval(int d)

Method Summary

Methods

Modifier and Type	Method and Description
abstract Chain	basis() The basis representing the interval.
abstract boolean	infiniteExtent() Is this PersistenceBasisInterval semi-infinite in extent?
abstract double[]	toDouble() Return the start/endpoints as double[].
abstract PersistenceInterval	toPersistenceInterval() Conversion to PersistenceInterval
java.lang.String	toString() Represent a PersistenceBasisInterval as a String.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

dimension

public final int dimension

The dimension of the PersistenceBasisInterval.

Constructor Detail

PersistenceBasisInterval

protected PersistenceBasisInterval(int d)

Method Detail

infiniteExtent

public abstract boolean infiniteExtent()

Is this PersistenceBasisInterval semi-infinite in extent?

Returns:

True or false depending on whether or not the right endpoint is infinite.

toDouble

public abstract double[] toDouble()

Return the start/endpoints as double[].

Returns:

double[] describing the start and end points of the interval.

basis

public abstract Chain basis()

The basis representing the interval.

Returns:

Chain the associated basis element.

toPersistenceInterval

public abstract PersistenceInterval toPersistenceInterval()

Conversion to PersistenceInterval

Returns:

PersistenceInterval

toString

public java.lang.String toString()

Represent a PersistenceBasisInterval as a String.

Overrides:

toString in class java.lang.Object

Returns:

A string that describes a PersistenceBasisInterval.