java.lang.Object
- jmri.jmrix.rps.InitialAlgorithm

All Implemented Interfaces:

Calculator
```
public class InitialAlgorithm
extends java.lang.Object
implements Calculator
```
Implementation of 1st algorithm for reducing Readings.
This algorithm was provided by Robert Ashenfelter based in part on the work of Ralph Bucher in his paper "Exact Solution for Three Dimensional Hyperbolic Positioning Algorithm and Synthesizable VHDL Model for Hardware Implementation".
Neither Ashenfelter nor Bucher provide any guarantee as to the intellectual property status of this algorithm. Use it at your own risk.

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) int`	`ngps`
`(package private) double`	`r0`
`(package private) double`	`ri`
`(package private) double`	`rj`
`(package private) double`	`rk`
`(package private) double`	`rl`
`(package private) javax.vecmath.Point3d`	`sensor1`
`(package private) javax.vecmath.Point3d`	`sensor2`
`(package private) javax.vecmath.Point3d`	`sensor3`
`(package private) javax.vecmath.Point3d`	`sensor4`
`(package private) double`	`vsound`
`(package private) double`	`x`	The following is the original algorithm, as provided by Ash as a C routine
`(package private) double`	`x0`
`(package private) double`	`xi`
`(package private) double`	`xj`
`(package private) double`	`xk`
`(package private) double`	`xl`
`(package private) double`	`y`	The following is the original algorithm, as provided by Ash as a C routine
`(package private) double`	`y0`
`(package private) double`	`yi`
`(package private) double`	`yj`
`(package private) double`	`yk`
`(package private) double`	`yl`
`(package private) double`	`z`	The following is the original algorithm, as provided by Ash as a C routine
`(package private) double`	`z0`
`(package private) double`	`zi`
`(package private) double`	`zj`
`(package private) double`	`zk`
`(package private) double`	`zl`

Constructor Summary

Constructors
Constructor	Description
`InitialAlgorithm(javax.vecmath.Point3d[] sensors, double vsound)`
`InitialAlgorithm(javax.vecmath.Point3d sensor1, javax.vecmath.Point3d sensor2, javax.vecmath.Point3d sensor3, double vsound)`
`InitialAlgorithm(javax.vecmath.Point3d sensor1, javax.vecmath.Point3d sensor2, javax.vecmath.Point3d sensor3, javax.vecmath.Point3d sensor4, double vsound)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Measurement`	`convert(Reading r)`
`Measurement`	`convert(Reading r, javax.vecmath.Point3d guess)`	Seed the conversion using an estimated position
`Measurement`	`convert(Reading r, Measurement last)`	Seed the conversion using a last measurement
`(package private) boolean`	`gps()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

vsound
```
double vsound
```

sensor1
```
javax.vecmath.Point3d sensor1
```

sensor2
```
javax.vecmath.Point3d sensor2
```

sensor3
```
javax.vecmath.Point3d sensor3
```

sensor4
```
javax.vecmath.Point3d sensor4
```

x
```
double x
```
The following is the original algorithm, as provided by Ash as a C routine

y
```
double y
```
The following is the original algorithm, as provided by Ash as a C routine

z
```
double z
```
The following is the original algorithm, as provided by Ash as a C routine

x0
```
double x0
```

y0
```
double y0
```

z0
```
double z0
```

r0
```
double r0
```

ngps
```
int ngps
```

xi
```
double xi
```

yi
```
double yi
```

zi
```
double zi
```

xj
```
double xj
```

yj
```
double yj
```

zj
```
double zj
```

xk
```
double xk
```

yk
```
double yk
```

zk
```
double zk
```

xl
```
double xl
```

yl
```
double yl
```

zl
```
double zl
```

ri
```
double ri
```

rj
```
double rj
```

rk
```
double rk
```

rl
```
double rl
```

Constructor Detail

InitialAlgorithm

public InitialAlgorithm(javax.vecmath.Point3d[] sensors,
                        double vsound)

InitialAlgorithm

public InitialAlgorithm(javax.vecmath.Point3d sensor1,
                        javax.vecmath.Point3d sensor2,
                        javax.vecmath.Point3d sensor3,
                        double vsound)

InitialAlgorithm

public InitialAlgorithm(javax.vecmath.Point3d sensor1,
                        javax.vecmath.Point3d sensor2,
                        javax.vecmath.Point3d sensor3,
                        javax.vecmath.Point3d sensor4,
                        double vsound)

Method Detail

convert

public Measurement convert(Reading r)

Specified by:: convert in interface Calculator

convert

public Measurement convert(Reading r,
                           javax.vecmath.Point3d guess)

Seed the conversion using an estimated position

Specified by:: convert in interface Calculator

convert

public Measurement convert(Reading r,
                           Measurement last)

Seed the conversion using a last measurement

Specified by:: convert in interface Calculator

gps
```
boolean gps()
```

Class InitialAlgorithm

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

vsound

sensor1

sensor2

sensor3

sensor4

x

y

z

x0

y0

z0

r0

ngps

xi

yi

zi

xj

yj

zj

xk

yk

zk

xl

yl

zl

ri

rj

rk

rl

Constructor Detail

InitialAlgorithm

InitialAlgorithm

InitialAlgorithm

Method Detail

convert

convert

convert

gps