java.lang.Object
- jmri.jmrix.rps.Ash1_0Algorithm

All Implemented Interfaces:

Calculator
```
public class Ash1_0Algorithm
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.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

(package private) static class Ash1_0Algorithm.RetVal
Internal class to handle return value.

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) static int`	`NMAX`
`(package private) static int`	`OFFSET`	The following is the original algorithm, as provided by Ash as a C routine
`(package private) double`	`ri`
`(package private) double`	`rj`
`(package private) double`	`rk`
`(package private) double`	`Rmax`
`(package private) Point3d[]`	`sensors`
`(package private) static int`	`TMAX`
`(package private) double`	`Vs`
`(package private) double`	`x`
`(package private) double`	`x0`
`(package private) double`	`x1`
`(package private) double`	`x2`
`(package private) double`	`xi`
`(package private) double`	`xj`
`(package private) double`	`xk`
`(package private) double`	`Xt`
`(package private) double`	`y`
`(package private) double`	`y0`
`(package private) double`	`y1`
`(package private) double`	`y2`
`(package private) double`	`yi`
`(package private) double`	`yj`
`(package private) double`	`yk`
`(package private) double`	`Yt`
`(package private) double`	`z`
`(package private) double`	`z0`
`(package private) double`	`z1`
`(package private) double`	`z2`
`(package private) double`	`zi`
`(package private) double`	`zj`
`(package private) double`	`zk`
`(package private) double`	`Zt`

Constructor Summary

Constructors
Constructor	Description
`Ash1_0Algorithm(Point3d[] sensors, double vsound)`
`Ash1_0Algorithm(Point3d sensor1, Point3d sensor2, Point3d sensor3, double vsound)`
`Ash1_0Algorithm(Point3d sensor1, Point3d sensor2, Point3d sensor3, 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, Point3d guess)`	Seed the conversion using an estimated position
`Measurement`	`convert(Reading r, Measurement last)`	Seed the conversion using a last measurement
`(package private) int`	`gps3()`
`(package private) Ash1_0Algorithm.RetVal`	`RPSpos(int nr, double[] Tr, double[] Xr, double[] Yr, double[] Zr, double Vs, double Xt, double Yt, double Zt)`
`(package private) double`	`wgt()`

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

Field Detail

Vs
```
double Vs
```

Xt
```
double Xt
```

Yt
```
double Yt
```

Zt
```
double Zt
```

sensors
```
Point3d[] sensors
```

OFFSET
```
static int OFFSET
```
The following is the original algorithm, as provided by Ash as a C routine

TMAX
```
static int TMAX
```

NMAX
```
static final int NMAX
```
See Also:

Constant Field Values

x
```
double x
```

y
```
double y
```

z
```
double z
```

x0
```
double x0
```

y0
```
double y0
```

z0
```
double z0
```

x1
```
double x1
```

y1
```
double y1
```

z1
```
double z1
```

x2
```
double x2
```

y2
```
double y2
```

z2
```
double z2
```

Rmax
```
double Rmax
```

xi
```
double xi
```

yi
```
double yi
```

zi
```
double zi
```

ri
```
double ri
```

xj
```
double xj
```

yj
```
double yj
```

zj
```
double zj
```

rj
```
double rj
```

xk
```
double xk
```

yk
```
double yk
```

zk
```
double zk
```

rk
```
double rk
```

Constructor Detail

Ash1_0Algorithm

public Ash1_0Algorithm(Point3d[] sensors,
                       double vsound)

Ash1_0Algorithm

public Ash1_0Algorithm(Point3d sensor1,
                       Point3d sensor2,
                       Point3d sensor3,
                       double vsound)

Ash1_0Algorithm

public Ash1_0Algorithm(Point3d sensor1,
                       Point3d sensor2,
                       Point3d sensor3,
                       Point3d sensor4,
                       double vsound)

Method Detail

convert

public Measurement convert(Reading r)

Specified by:: convert in interface Calculator

convert

public Measurement convert(Reading r,
                           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

RPSpos

Ash1_0Algorithm.RetVal RPSpos(int nr,
                              double[] Tr,
                              double[] Xr,
                              double[] Yr,
                              double[] Zr,
                              double Vs,
                              double Xt,
                              double Yt,
                              double Zt)

wgt
```
double wgt()
```

gps3
```
int gps3()
```

Class Ash1_0Algorithm

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

Vs

Xt

Yt

Zt

sensors

OFFSET

TMAX

NMAX

x

y

z

x0

y0

z0

x1

y1

z1

x2

y2

z2

Rmax

xi

yi

zi

ri

xj

yj

zj

rj

xk

yk

zk

rk

Constructor Detail

Ash1_0Algorithm

Ash1_0Algorithm

Ash1_0Algorithm

Method Detail

convert

convert

convert

RPSpos

wgt

gps3