Package org.opentrafficsim.road.od

Enum Interpolation

java.lang.Object

java.lang.Enum<Interpolation>

org.opentrafficsim.road.od.Interpolation

All Implemented Interfaces:

Serializable, Comparable<Interpolation>

public enum Interpolation
extends Enum<Interpolation>

Interpolation of demand.

Copyright (c) 2013-2023 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Enum Constant Summary

Enum Constants

Enum Constant	Description
LINEAR	Linear interpolation of demand.
STEPWISE	Stepwise interpolation of demand.

Method Summary

Modifier and Type	Method	Description
(package private) abstract int	integrate(Frequency frequency0, Time time0, Frequency frequency1, Time time1)	Integrates to the number of trips in given period.
(package private) abstract Frequency	interpolate(Frequency frequency0, Time time0, Frequency frequency1, Time time1, Time time)	Interpolate between given frequencies.
final Frequency	interpolateVector(Time time, FrequencyVector demandVector, TimeVector timeVector, boolean sliceStart)	Returns interpolated value from array at given time.
boolean	isLinear()
boolean	isStepWise()
static Interpolation	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Interpolation[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

STEPWISE

public static final Interpolation STEPWISE

Stepwise interpolation of demand.

LINEAR

public static final Interpolation LINEAR

Linear interpolation of demand.

Method Details

values

public static Interpolation[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Interpolation valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

interpolate

abstract Frequency interpolate(Frequency frequency0,
 Time time0,
 Frequency frequency1,
 Time time1,
 Time time)

Interpolate between given frequencies.

Parameters:

frequency0 - Frequency; frequency at time0

time0 - Time; time of frequency0 (≤ time)

frequency1 - Frequency; frequency at time1

time1 - Time; time of frequency1 (> time)

time - Time; time0 ≤ time < time1

Returns:

interpolated frequency

integrate

abstract int integrate(Frequency frequency0,
 Time time0,
 Frequency frequency1,
 Time time1)

Integrates to the number of trips in given period.

Parameters:

frequency0 - Frequency; frequency at time0

time0 - Time; time of frequency0 (≤ time)

frequency1 - Frequency; frequency at time1

time1 - Time; time of frequency1 (> time)

Returns:

number of trips in given period

isStepWise

public boolean isStepWise()

Returns:

whether this is step-wise interpolation

isLinear

public boolean isLinear()

Returns:

whether this is linear interpolation

interpolateVector

public final Frequency interpolateVector(Time time,
 FrequencyVector demandVector,
 TimeVector timeVector,
 boolean sliceStart)

Returns interpolated value from array at given time. If time is outside of the vector range, 0 is returned.

Parameters:

time - Time; time to determine the frequency at

demandVector - FrequencyVector; demand vector

timeVector - TimeVector; time vector

sliceStart - boolean; whether the time is at the start of an arbitrary time slice

Returns:

interpolated value from array at given time, or 0 when time is outside of range