JSci.maths.vectors
Class ComplexVector

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

All Implemented Interfaces:

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

public class ComplexVector

extends AbstractComplexVector

An array-based implementation of a complex vector.

See Also:

Serialized Form

Field Summary

protected double[]	vectorIm
protected double[]	vectorRe Arrays containing the components of the vector.

Fields inherited from class JSci.maths.vectors.MathVector

N

Constructor Summary

ComplexVector(Complex[] array)
Constructs a vector from an array.

ComplexVector(double[] real, double[] imag)
Constructs a vector by wrapping two arrays.

ComplexVector(int dim)
Constructs an empty vector.

Method Summary

AbelianGroup.Member	add(AbelianGroup.Member v) Returns the addition of this vector and another.
AbstractComplexVector	add(AbstractComplexVector v) Returns the addition of this vector and another.
AbstractComplexVector	add(AbstractDoubleVector v) Returns the addition of this vector and another.
AbstractComplexVector	add(AbstractIntegerVector v) Returns the addition of this vector and another.
ComplexVector	add(ComplexVector v)
ComplexVector	add(DoubleVector v)
ComplexVector	add(IntegerVector v)
AbstractComplexVector	conjugate() Returns the complex conjugate of this vector.
boolean	equals(java.lang.Object a) 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 vector.
double	infNorm() Returns the l-norm.
AbstractComplexVector	mapComponents(ComplexMapping f) 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 vector.
AbstractComplexVector	scalarDivide(Complex z) Returns the division of this vector by a scalar.
AbstractComplexVector	scalarDivide(double x) 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 x) 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 v) Returns the scalar product of this vector and another.
Complex	scalarProduct(HilbertSpace.Member v) 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 v) Returns the subtraction of this vector by another.
AbstractComplexVector	subtract(AbstractComplexVector v) Returns the subtraction of this vector by another.
AbstractComplexVector	subtract(AbstractDoubleVector v) Returns the subtraction of this vector by another.
AbstractComplexVector	subtract(AbstractIntegerVector v) Returns the subtraction of this vector by another.
ComplexVector	subtract(ComplexVector v)
ComplexVector	subtract(DoubleVector v)
ComplexVector	subtract(IntegerVector v)
java.lang.String	toString() Returns a comma delimited string representing the value of this vector.

Methods inherited from class JSci.maths.vectors.AbstractComplexVector

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

vectorRe

protected double[] vectorRe

Arrays containing the components of the vector.

vectorIm

protected double[] vectorIm

Constructor Detail

ComplexVector

public ComplexVector(int dim)

Constructs an empty vector.

Parameters:

dim - the dimension of the vector.

ComplexVector

public ComplexVector(double[] real,
                     double[] imag)

Constructs a vector by wrapping two arrays.

Parameters:

real - an array of real values

imag - an array of imaginary values

ComplexVector

public ComplexVector(Complex[] array)

Constructs a vector from an array.

Parameters:

array - an assigned value

Method Detail

equals

public boolean equals(java.lang.Object a)

Compares two complex vectors for equality.

Overrides:

equals in class AbstractComplexVector

Parameters:

a - a complex 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 vector.

Specified by:

real in class AbstractComplexVector

imag

public AbstractDoubleVector imag()

Returns the imaginary part of this complex 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

add

public AbelianGroup.Member add(AbelianGroup.Member v)

Returns the addition of this vector and another.

Parameters:

v - a group member

add

public AbstractComplexVector add(AbstractComplexVector v)

Returns the addition of this vector and another.

Specified by:

add in class AbstractComplexVector

Parameters:

v - a complex vector

Throws:

VectorDimensionException - If the vectors are different sizes.

add

public ComplexVector add(ComplexVector v)

add

public AbstractComplexVector add(AbstractDoubleVector v)

Returns the addition of this vector and another.

Parameters:

v - a double vector

Throws:

VectorDimensionException - If the vectors are different sizes.

add

public ComplexVector add(DoubleVector v)

add

public AbstractComplexVector add(AbstractIntegerVector v)

Returns the addition of this vector and another.

Parameters:

v - an integer vector

Throws:

VectorDimensionException - If the vectors are different sizes.

add

public ComplexVector add(IntegerVector v)

subtract

public AbelianGroup.Member subtract(AbelianGroup.Member v)

Returns the subtraction of this vector by another.

Parameters:

v - a group member

subtract

public AbstractComplexVector subtract(AbstractComplexVector v)

Returns the subtraction of this vector by another.

Specified by:

subtract in class AbstractComplexVector

Parameters:

v - a complex vector

Throws:

VectorDimensionException - If the vectors are different sizes.

subtract

public ComplexVector subtract(ComplexVector v)

subtract

public AbstractComplexVector subtract(AbstractDoubleVector v)

Returns the subtraction of this vector by another.

Parameters:

v - a double vector

Throws:

VectorDimensionException - If the vectors are different sizes.

subtract

public ComplexVector subtract(DoubleVector v)

subtract

public AbstractComplexVector subtract(AbstractIntegerVector v)

Returns the subtraction of this vector by another.

Parameters:

v - an integer vector

Throws:

VectorDimensionException - If the vectors are different sizes.

subtract

public ComplexVector subtract(IntegerVector v)

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

scalarMultiply

public AbstractComplexVector scalarMultiply(double x)

Returns the multiplication of this vector by a scalar.

Specified by:

scalarMultiply in class AbstractComplexVector

Parameters:

x - a double

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

Throws:

java.lang.ArithmeticException - If divide by zero.

scalarDivide

public AbstractComplexVector scalarDivide(double x)

Returns the division of this vector by a scalar.

Specified by:

scalarDivide in class AbstractComplexVector

Parameters:

x - a double

Throws:

java.lang.ArithmeticException - If divide by zero.

scalarProduct

public Complex scalarProduct(HilbertSpace.Member v)

Returns the scalar product of this vector and another.

Parameters:

v - a Hilbert space vector

scalarProduct

public Complex scalarProduct(AbstractComplexVector v)

Returns the scalar product of this vector and another.

Specified by:

scalarProduct in class AbstractComplexVector

Parameters:

v - a complex vector

Throws:

VectorDimensionException - If the vectors are different sizes.

mapComponents

public AbstractComplexVector mapComponents(ComplexMapping f)

Applies a function on all the vector components.

Specified by:

mapComponents in class AbstractComplexVector

Parameters:

f - a user-defined function

Returns:

a complex vector