no.uib.cipr.matrix
Class DenseVector

java.lang.Object
  no.uib.cipr.matrix.AbstractVector
      no.uib.cipr.matrix.DenseVector

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<VectorEntry>, Vector

public class DenseVector
extends AbstractVector
implements java.io.Serializable

Dense vector. Stored by a double[] array of the same length as the vector itself.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface no.uib.cipr.matrix.Vector

Vector.Norm

Field Summary

Fields inherited from class no.uib.cipr.matrix.AbstractVector

size

Constructor Summary

DenseVector(double[] x)
Constructor for DenseVector

DenseVector(double[] x, boolean deep)
Constructor for DenseVector

DenseVector(int size)
Constructor for DenseVector

DenseVector(MatrixVectorReader r)
Constructor for DenseVector

DenseVector(Vector x)
Constructor for DenseVector

DenseVector(Vector x, boolean deep)
Constructor for DenseVector

Method Summary

Vector	add(double alpha, Vector y) x = alpha*y + x
void	add(int index, double value) x(index) += value
Vector	add(Vector y) x = y + x
DenseVector	copy() Creates a deep copy of the vector
double	dot(Vector y) xT*y
double	get(int index) Returns x(index)
double[]	getData() Returns the internal vector contents.
protected double	norm1()
protected double	norm2_robust()
protected double	norm2()
protected double	normInf()
DenseVector	scale(double alpha) x=alpha*x
Vector	set(double alpha, Vector y) x=alpha*y
void	set(int index, double value) x(index) = value
Vector	set(Vector y) x=y
DenseVector	zero() Zeros all the entries in the vector, while preserving any underlying structure

Methods inherited from class no.uib.cipr.matrix.AbstractVector

check, checkSize, iterator, norm, size, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DenseVector

public DenseVector(MatrixVectorReader r)
            throws java.io.IOException

Constructor for DenseVector

Parameters:

r - Reader to get vector from

Throws:

java.io.IOException

DenseVector

public DenseVector(int size)

Constructor for DenseVector

Parameters:

size - Size of the vector

DenseVector

public DenseVector(Vector x)

Constructor for DenseVector

Parameters:

x - Copies contents from this vector. A deep copy is made

DenseVector

public DenseVector(Vector x,
                   boolean deep)

Constructor for DenseVector

Parameters:

x - Copies contents from this vector

deep - True for a deep copy. For a shallow copy, x must be a DenseVector

DenseVector

public DenseVector(double[] x,
                   boolean deep)

Constructor for DenseVector

Parameters:

x - Copies contents from this array

deep - True for a deep copy. For a shallow copy, x is aliased with the internal storage

DenseVector

public DenseVector(double[] x)

Constructor for DenseVector

Parameters:

x - Copies contents from this array in a deep copy

Method Detail

set

public void set(int index,
                double value)

Description copied from interface: Vector

x(index) = value

Specified by:

set in interface Vector

Overrides:

set in class AbstractVector

add

public void add(int index,
                double value)

Description copied from interface: Vector

x(index) += value

Specified by:

add in interface Vector

Overrides:

add in class AbstractVector

get

public double get(int index)

Description copied from interface: Vector

Returns x(index)

Specified by:

get in interface Vector

Overrides:

get in class AbstractVector

copy

public DenseVector copy()

Description copied from interface: Vector

Creates a deep copy of the vector

Specified by:

copy in interface Vector

Overrides:

copy in class AbstractVector

zero

public DenseVector zero()

Description copied from interface: Vector

Zeros all the entries in the vector, while preserving any underlying structure

Specified by:

zero in interface Vector

Overrides:

zero in class AbstractVector

scale

public DenseVector scale(double alpha)

Description copied from interface: Vector

x=alpha*x

Specified by:

scale in interface Vector

Overrides:

scale in class AbstractVector

Returns:

x

set

public Vector set(Vector y)

Description copied from interface: Vector

x=y

Specified by:

set in interface Vector

Overrides:

set in class AbstractVector

Returns:

x

set

public Vector set(double alpha,
                  Vector y)

Description copied from interface: Vector

x=alpha*y

Specified by:

set in interface Vector

Overrides:

set in class AbstractVector

Returns:

x

add

public Vector add(Vector y)

Description copied from interface: Vector

x = y + x

Specified by:

add in interface Vector

Overrides:

add in class AbstractVector

Returns:

x

add

public Vector add(double alpha,
                  Vector y)

Description copied from interface: Vector

x = alpha*y + x

Specified by:

add in interface Vector

Overrides:

add in class AbstractVector

Returns:

x

dot

public double dot(Vector y)

Description copied from interface: Vector

xT*y

Specified by:

dot in interface Vector

Overrides:

dot in class AbstractVector

norm1

protected double norm1()

Overrides:

norm1 in class AbstractVector

norm2

protected double norm2()

Overrides:

norm2 in class AbstractVector

norm2_robust

protected double norm2_robust()

Overrides:

norm2_robust in class AbstractVector

normInf

protected double normInf()

Overrides:

normInf in class AbstractVector

getData

public double[] getData()

Returns the internal vector contents. The array indices correspond to the vector indices