ArrivalsHeadwayGenerator.HeadwayDistribution (Open Traffic Sim road classes 1.04.04 API)

Enclosing class:

ArrivalsHeadwayGenerator
```
public static interface ArrivalsHeadwayGenerator.HeadwayDistribution
```
Headway distribution.
Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

Version:

$Revision$, $LastChangedDate$, by $Author$, initial version 5 dec. 2017

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Field Summary

Fields
Modifier and Type	Field	Description
`static ArrivalsHeadwayGenerator.HeadwayDistribution`	`CONSTANT`	Constant headway.
`static ArrivalsHeadwayGenerator.HeadwayDistribution`	`EXPONENTIAL`	Exponential headway distribution.
`static ArrivalsHeadwayGenerator.HeadwayDistribution`	`LOGNORMAL`	Log-normal headway distribution (variance = 1.0).
`static ArrivalsHeadwayGenerator.HeadwayDistribution`	`TRI_EXP`	Triangular (left side, mean 2/3) and exponential (right side, mean 4/3) headway distribution.
`static ArrivalsHeadwayGenerator.HeadwayDistribution`	`TRIANGULAR`	Triangular headway distribution.
`static ArrivalsHeadwayGenerator.HeadwayDistribution`	`UNIFORM`	Uniform headway distribution.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double`	`draw(StreamInterface randomStream)`	Draws a randomized headway factor.
`String`	`getName()`	Returns the distribution name.

- Field Detail
  - CONSTANT
```
static final ArrivalsHeadwayGenerator.HeadwayDistribution CONSTANT
```
    Constant headway.
  - EXPONENTIAL
```
static final ArrivalsHeadwayGenerator.HeadwayDistribution EXPONENTIAL
```
    Exponential headway distribution.
  - UNIFORM
```
static final ArrivalsHeadwayGenerator.HeadwayDistribution UNIFORM
```
    Uniform headway distribution.
  - TRIANGULAR
```
static final ArrivalsHeadwayGenerator.HeadwayDistribution TRIANGULAR
```
    Triangular headway distribution.
  - TRI_EXP
```
static final ArrivalsHeadwayGenerator.HeadwayDistribution TRI_EXP
```
    Triangular (left side, mean 2/3) and exponential (right side, mean 4/3) headway distribution.
  - LOGNORMAL
```
static final ArrivalsHeadwayGenerator.HeadwayDistribution LOGNORMAL
```
    Log-normal headway distribution (variance = 1.0).
- Method Detail
  - draw
```
double draw(StreamInterface randomStream)
```
    Draws a randomized headway factor. The average value returned is always 1.0. The returned value is applied on the demand pattern by (reversed) integration to derive actual headways.
    
    Parameters:
    
    randomStream - StreamInterface; random number stream
    
    Returns:
    
    randomized headway factor
  - getName
```
String getName()
```
    Returns the distribution name.
    
    Returns:
    
    distribution name