Vector

java.lang.Object
- ProGAL.geomNd.Vector

Direct Known Subclasses:

Vector, Vector
```
public class Vector
extends java.lang.Object
```
A vector in metric space represented with double precision.

Field Summary

Fields
Modifier and Type Field and Description

protected double[] coords

protected int dim

Fields
Modifier and Type	Field and Description
`protected double[]`	`coords`
`protected int`	`dim`

Constructor Summary

Constructors
Constructor and Description
`Vector(double[] coords)` Construct a vector with the specified coordinates
`Vector(int dim)`
`Vector(Point p)` Construct a vector pointing from origo to p.
`Vector(Point p1, Point p2)` Constructs a vector between two points p1 and p2 - added by pawel 12-11-2011
`Vector(Vector v)` Construct a vector that is a clone of v.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Vector`	`add(Vector v)` Add v to this vector and return the result (without changing this object).
`Vector`	`addThis(Vector v)` Add v to this vector and return the result (changing this object).
`double`	`angle(Vector v)` Get the angle between this vector and v.
`Vector`	`clone()` Create a clone of this vector.
`Vector`	`divide(double s)` Divide this vector by s and return the result (without changing this object).
`Vector`	`divideThis(double s)` Divide this vector by s and return the result (changing this object).
`double`	`dot(Vector v)` Get the dot-product of this vector and v.
`boolean`	`equals(java.lang.Object v)`
`boolean`	`equals(Vector v)` Return true if this vector equals v.
`double`	`get(int i)` Get the i'th coordinate.
`static double`	`getAngle(Vector u, Vector v)` Get the angle between vector u and v.
`double`	`getCoord(int i)` Get the i'th coordinate.
`int`	`getDimensions()` Get the dimensionality of this vector
`double`	`getLengthSquared()` Get the squared length of this vector.
`boolean`	`isZeroVector()` Return true if the length of this vector is 0.
`double`	`length()` Get the length of this vector.
`Vector`	`multiply(double s)` Multiply this vector by s and return the result (without changing this object).
`Vector`	`multiplyThis(double s)` Multiply this vector by s and return the result (changing this object).
`Vector`	`normalize()` Normalize this vector and return the result (without changing this object).
`Vector`	`normalizeThis()` Normalize this vector and return the result (changing this object).
`Matrix`	`outerProduct(Vector v)`
`static Vector`	`randomVector(int dim, double len)` Create a vector of length `len` pointing a random direction
`Vector`	`scaleToLength(double length)` Scale this vector to a certain length (returns new object and does not change this object).
`Vector`	`scaleToLengthThis(double length)` Scale this vector to a certain length (changes this object).
`void`	`set(int i, double v)` Set the i'th coordinate to v
`void`	`setCoord(int i, double v)` Set the i'th coordinate to v
`void`	`setCoords(double[] coords)` Set the coordinates
`Vector`	`subtract(Vector v)` Subtract v from this vector and return the result (without changing this object).
`Vector`	`subtractThis(Vector v)` Subtract v from this vector and return the result (changing this object).
`void`	`toConsole()` Writes this vector to `System.out`.
`void`	`toConsole(int dec)` Writes this vector to `System.out` with `dec` decimals precision.
`Point`	`toPoint()` Convert this vector to a point.
`java.lang.String`	`toString()` Returns a string-representation of this vector formatted with two decimals precision.
`java.lang.String`	`toString(int dec)` Returns a string-representation of this vector formatted with `dec` decimals precision.

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

- Field Detail
  - coords
```
protected double[] coords
```
  - dim
```
protected final int dim
```
- Constructor Detail
  - Vector
```
public Vector(Point p)
```
    Construct a vector pointing from origo to p.
  - Vector
```
public Vector(Point p1,
              Point p2)
```
    Constructs a vector between two points p1 and p2 - added by pawel 12-11-2011
  - Vector
```
public Vector(Vector v)
```
    Construct a vector that is a clone of v.
  - Vector
```
public Vector(double[] coords)
```
    Construct a vector with the specified coordinates
  - Vector
```
public Vector(int dim)
```
- Method Detail
  - getCoord
```
public double getCoord(int i)
```
    Get the i'th coordinate.
  - get
```
public double get(int i)
```
    Get the i'th coordinate.
  - getDimensions
```
public int getDimensions()
```
    Get the dimensionality of this vector
  - setCoord
```
public void setCoord(int i,
                     double v)
```
    Set the i'th coordinate to v
  - setCoords
```
public void setCoords(double[] coords)
```
    Set the coordinates
  - set
```
public void set(int i,
                double v)
```
    Set the i'th coordinate to v
  - getLengthSquared
```
public double getLengthSquared()
```
    Get the squared length of this vector.
  - length
```
public double length()
```
    Get the length of this vector.
  - isZeroVector
```
public boolean isZeroVector()
```
    Return true if the length of this vector is 0.
  - dot
```
public double dot(Vector v)
```
    Get the dot-product of this vector and v.
  - angle
```
public double angle(Vector v)
```
    Get the angle between this vector and v.
  - add
```
public Vector add(Vector v)
```
    Add v to this vector and return the result (without changing this object).
  - addThis
```
public Vector addThis(Vector v)
```
    Add v to this vector and return the result (changing this object).
  - subtract
```
public Vector subtract(Vector v)
```
    Subtract v from this vector and return the result (without changing this object).
  - subtractThis
```
public Vector subtractThis(Vector v)
```
    Subtract v from this vector and return the result (changing this object).
  - multiply
```
public Vector multiply(double s)
```
    Multiply this vector by s and return the result (without changing this object).
  - multiplyThis
```
public Vector multiplyThis(double s)
```
    Multiply this vector by s and return the result (changing this object).
  - divide
```
public Vector divide(double s)
```
    Divide this vector by s and return the result (without changing this object).
  - divideThis
```
public Vector divideThis(double s)
```
    Divide this vector by s and return the result (changing this object).
  - outerProduct
```
public Matrix outerProduct(Vector v)
```
  - normalize
```
public Vector normalize()
```
    Normalize this vector and return the result (without changing this object).
  - normalizeThis
```
public Vector normalizeThis()
```
    Normalize this vector and return the result (changing this object).
  - scaleToLength
```
public Vector scaleToLength(double length)
```
    Scale this vector to a certain length (returns new object and does not change this object).
  - scaleToLengthThis
```
public Vector scaleToLengthThis(double length)
```
    Scale this vector to a certain length (changes this object).
  - toPoint
```
public Point toPoint()
```
    Convert this vector to a point.
  - toString
```
public java.lang.String toString()
```
    Returns a string-representation of this vector formatted with two decimals precision.
    
    Overrides:
    
    toString in class java.lang.Object
  - toString
```
public java.lang.String toString(int dec)
```
    Returns a string-representation of this vector formatted with dec decimals precision.
  - toConsole
```
public void toConsole()
```
    Writes this vector to System.out.
  - toConsole
```
public void toConsole(int dec)
```
    Writes this vector to System.out with dec decimals precision.
  - equals
```
public boolean equals(Vector v)
```
    Return true if this vector equals v.
  - equals
```
public boolean equals(java.lang.Object v)
```
    Overrides:
    
    equals in class java.lang.Object
  - clone
```
public Vector clone()
```
    Create a clone of this vector.
    
    Overrides:
    
    clone in class java.lang.Object
  - getAngle
```
public static double getAngle(Vector u,
                              Vector v)
```
    Get the angle between vector u and v.
  - randomVector
```
public static Vector randomVector(int dim,
                                  double len)
```
    Create a vector of length len pointing a random direction

Class Vector

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

coords

dim

Constructor Detail

Vector

Vector

Vector

Vector

Vector

Method Detail

getCoord

get

getDimensions

setCoord

setCoords

set

getLengthSquared

length

isZeroVector

dot

angle

add

addThis

subtract

subtractThis

multiply

multiplyThis

divide

divideThis

outerProduct

normalize

normalizeThis

scaleToLength

scaleToLengthThis

toPoint

toString

toString

toConsole

toConsole

equals

equals

clone

getAngle

randomVector