JSci.maths.vectors
Class Complex2Vector

java.lang.Object
  JSci.maths.vectors.MathVector
      JSci.maths.vectors.AbstractComplexVector
          JSci.maths.vectors.Complex2Vector

All Implemented Interfaces:

java.io.Serializable, BanachSpace.Member, HilbertSpace.Member, Module.Member, VectorSpace.Member, AbelianGroup.Member, Member

public final class Complex2Vector
extends AbstractComplexVector

An optimised implementation of a 2D complex vector.

See Also:

Serialized Form

Field Summary

protected double	xim
protected double	xre
protected double	yim
protected double	yre

Fields inherited from class JSci.maths.vectors.MathVector

N

Constructor Summary

Complex2Vector()
Constructs an empty 2-vector.

Complex2Vector(Complex x, Complex y)
Constructs a 2-vector.

Complex2Vector(double xRe, double xIm, double yRe, double yIm)

Method Summary

AbelianGroup.Member	add(AbelianGroup.Member vec) Returns the addition of this vector and another.
AbstractComplexVector	add(AbstractComplexVector vec) Returns the addition of this vector and another.
AbstractComplexVector	add(AbstractDoubleVector vec) Returns the addition of this vector and another.
AbstractComplexVector	add(AbstractIntegerVector vec) Returns the addition of this vector and another.
AbstractComplexVector	conjugate() Returns the complex conjugate of this vector.
boolean	equals(java.lang.Object obj, double tol) Compares two complex vectors for equality.
Complex	getComponent(int n) Returns a component of this vector.
double	getImagComponent(int n)
double	getRealComponent(int n)
AbstractDoubleVector	imag() Returns the imaginary part of this complex 2-vector.
double	infNorm() Returns the l-norm.
AbstractComplexVector	mapComponents(ComplexMapping mapping) Applies a function on all the vector components.
AbelianGroup.Member	negate() Returns the negative of this vector.
double	norm() Returns the l2-norm (magnitude).
AbstractDoubleVector	real() Returns the real part of this complex 2-vector.
AbstractComplexVector	scalarDivide(Complex z) Returns the division of this vector by a scalar.
AbstractComplexVector	scalarDivide(double k) Returns the division of this vector by a scalar.
VectorSpace.Member	scalarDivide(Field.Member x) Returns the division of this vector by a scalar.
AbstractComplexVector	scalarMultiply(Complex z) Returns the multiplication of this vector by a scalar.
AbstractComplexVector	scalarMultiply(double k) Returns the multiplication of this vector by a scalar.
Module.Member	scalarMultiply(Ring.Member x) Returns the multiplication of this vector by a scalar.
Complex	scalarProduct(AbstractComplexVector vec) Returns the scalar product of this vector and another.
Complex	scalarProduct(Complex2Vector vec) Returns the scalar product of this vector and another.
Complex	scalarProduct(HilbertSpace.Member vec) Returns the scalar product of this vector and another.
void	setComponent(int n, Complex z) Sets the value of a component of this vector.
void	setComponent(int n, double x, double y) Sets the value of a component of this vector.
AbelianGroup.Member	subtract(AbelianGroup.Member vec) Returns the subtraction of this vector by another.
AbstractComplexVector	subtract(AbstractComplexVector vec) Returns the subtraction of this vector by another.
AbstractComplexVector	subtract(AbstractDoubleVector vec) Returns the subtraction of this vector by another.
AbstractComplexVector	subtract(AbstractIntegerVector vec) Returns the subtraction of this vector by another.
java.lang.String	toString() Returns a comma delimited string representing the value of this vector.

Methods inherited from class JSci.maths.vectors.AbstractComplexVector

equals, getSet, hashCode, normalize

Methods inherited from class JSci.maths.vectors.MathVector

dimension, getInvalidComponentMsg

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

xre

protected double xre

xim

protected double xim

yre

protected double yre

yim

protected double yim

Constructor Detail

Complex2Vector

public Complex2Vector()

Constructs an empty 2-vector.

Complex2Vector

public Complex2Vector(Complex x,
                      Complex y)

Constructs a 2-vector.

Parameters:

x - x coordinate.

y - y coordinate.

Complex2Vector

public Complex2Vector(double xRe,
                      double xIm,
                      double yRe,
                      double yIm)

Method Detail

equals

public boolean equals(java.lang.Object obj,
                      double tol)

Compares two complex vectors for equality.

Overrides:

equals in class AbstractComplexVector

Parameters:

obj - a complex 2-vector

toString

public java.lang.String toString()

Returns a comma delimited string representing the value of this vector.

Overrides:

toString in class AbstractComplexVector

real

public AbstractDoubleVector real()

Returns the real part of this complex 2-vector.

Specified by:

real in class AbstractComplexVector

imag

public AbstractDoubleVector imag()

Returns the imaginary part of this complex 2-vector.

Specified by:

imag in class AbstractComplexVector

getComponent

public Complex getComponent(int n)

Returns a component of this vector.

Specified by:

getComponent in class AbstractComplexVector

Parameters:

n - index of the vector component

Throws:

VectorDimensionException - If attempting to access an invalid component.

getRealComponent

public double getRealComponent(int n)

Specified by:

getRealComponent in class AbstractComplexVector

getImagComponent

public double getImagComponent(int n)

Specified by:

getImagComponent in class AbstractComplexVector

setComponent

public void setComponent(int n,
                         Complex z)

Sets the value of a component of this vector. Should only be used to initialise this vector.

Specified by:

setComponent in class AbstractComplexVector

Parameters:

n - index of the vector component

z - a complex number

Throws:

VectorDimensionException - If attempting to access an invalid component.

setComponent

public void setComponent(int n,
                         double x,
                         double y)

Sets the value of a component of this vector. Should only be used to initialise this vector.

Specified by:

setComponent in class AbstractComplexVector

Parameters:

n - index of the vector component

x - the real part of a complex number

y - the imaginary part of a complex number

Throws:

VectorDimensionException - If attempting to access an invalid component.

norm

public double norm()

Returns the l²-norm (magnitude).

Specified by:

norm in interface BanachSpace.Member

Overrides:

norm in class AbstractComplexVector

infNorm

public double infNorm()

Returns the l-norm.

Overrides:

infNorm in class AbstractComplexVector

negate

public AbelianGroup.Member negate()

Returns the negative of this vector.

conjugate

public AbstractComplexVector conjugate()

Returns the complex conjugate of this vector.

Specified by:

conjugate in class AbstractComplexVector

Returns:

a complex 2-vector

add

public AbelianGroup.Member add(AbelianGroup.Member vec)

Returns the addition of this vector and another.

Parameters:

vec - a group member

add

public AbstractComplexVector add(AbstractComplexVector vec)

Returns the addition of this vector and another.

Specified by:

add in class AbstractComplexVector

Parameters:

vec - a complex 2-vector

add

public AbstractComplexVector add(AbstractDoubleVector vec)

Returns the addition of this vector and another.

Parameters:

vec - a double 2-vector

add

public AbstractComplexVector add(AbstractIntegerVector vec)

Returns the addition of this vector and another.

Parameters:

vec - an integer 2-vector

subtract

public AbelianGroup.Member subtract(AbelianGroup.Member vec)

Returns the subtraction of this vector by another.

Parameters:

vec - a group member

subtract

public AbstractComplexVector subtract(AbstractComplexVector vec)

Returns the subtraction of this vector by another.

Specified by:

subtract in class AbstractComplexVector

Parameters:

vec - a complex 2-vector

subtract

public AbstractComplexVector subtract(AbstractDoubleVector vec)

Returns the subtraction of this vector by another.

Parameters:

vec - a double 2-vector

subtract

public AbstractComplexVector subtract(AbstractIntegerVector vec)

Returns the subtraction of this vector by another.

Parameters:

vec - an integer 2-vector

scalarMultiply

public Module.Member scalarMultiply(Ring.Member x)

Returns the multiplication of this vector by a scalar.

Parameters:

x - a ring member

scalarMultiply

public AbstractComplexVector scalarMultiply(Complex z)

Returns the multiplication of this vector by a scalar.

Specified by:

scalarMultiply in class AbstractComplexVector

Parameters:

z - a complex number

Returns:

a complex 2-vector

scalarMultiply

public AbstractComplexVector scalarMultiply(double k)

Returns the multiplication of this vector by a scalar.

Specified by:

scalarMultiply in class AbstractComplexVector

Parameters:

k - a double

Returns:

a complex 2-vector

scalarDivide

public VectorSpace.Member scalarDivide(Field.Member x)

Returns the division of this vector by a scalar.

Parameters:

x - a field member

scalarDivide

public AbstractComplexVector scalarDivide(Complex z)

Returns the division of this vector by a scalar.

Specified by:

scalarDivide in class AbstractComplexVector

Parameters:

z - a complex number

Returns:

a complex 2-vector

Throws:

java.lang.ArithmeticException - If divide by zero.

scalarDivide

public AbstractComplexVector scalarDivide(double k)

Returns the division of this vector by a scalar.

Specified by:

scalarDivide in class AbstractComplexVector

Parameters:

k - a double

Returns:

a complex 2-vector

Throws:

java.lang.ArithmeticException - If divide by zero.

scalarProduct

public Complex scalarProduct(HilbertSpace.Member vec)

Returns the scalar product of this vector and another.

Parameters:

vec - a Hilbert space vector

scalarProduct

public Complex scalarProduct(AbstractComplexVector vec)

Returns the scalar product of this vector and another.

Specified by:

scalarProduct in class AbstractComplexVector

Parameters:

vec - a complex vector

Throws:

VectorDimensionException - If the vectors are different sizes.

scalarProduct

public Complex scalarProduct(Complex2Vector vec)

Returns the scalar product of this vector and another.

Parameters:

vec - a complex 2-vector

mapComponents

public AbstractComplexVector mapComponents(ComplexMapping mapping)

Applies a function on all the vector components.

Specified by:

mapComponents in class AbstractComplexVector

Parameters:

mapping - a user-defined function

Returns:

a complex 2-vector