org.jscience.mathematics.algebraic.matrices
Class DoubleSymmetricMatrix

java.lang.Object
  org.jscience.mathematics.algebraic.AbstractHypermatrix
      org.jscience.mathematics.algebraic.AbstractMatrix
          org.jscience.mathematics.algebraic.matrices.AbstractDoubleMatrix
              org.jscience.mathematics.algebraic.matrices.AbstractDoubleSquareMatrix
                  org.jscience.mathematics.algebraic.matrices.DoubleSquareMatrix
                      org.jscience.mathematics.algebraic.matrices.DoubleSymmetricMatrix

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Algebra.Member, Ring.Member, AbelianGroup.Member, Hypermatrix, Matrix, Module.Member, VectorSpace.Member, SquareMatrix, Member

public class DoubleSymmetricMatrix
extends DoubleSquareMatrix
implements java.lang.Cloneable, java.io.Serializable

The DoubleSquareMatrix class provides an object for encapsulating square matrices containing doubles.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.jscience.mathematics.algebraic.matrices.DoubleSquareMatrix

matrix

Fields inherited from class org.jscience.mathematics.algebraic.matrices.AbstractDoubleSquareMatrix

LU, LUpivot

Constructor Summary

DoubleSymmetricMatrix(double[][] array)
Constructs a matrix by wrapping an array.

DoubleSymmetricMatrix(DoubleSymmetricMatrix mat)
Copy constructor.

DoubleSymmetricMatrix(DoubleVector[] array)
Constructs a matrix from an array of vectors (columns).

DoubleSymmetricMatrix(int size)
Constructs an empty matrix.

Method Summary

java.lang.Object	clone() Clone matrix into a new matrix.
void	setElement(int i, int j, double x) Also sets the symmetric element.

Methods inherited from class org.jscience.mathematics.algebraic.matrices.DoubleSquareMatrix

add, add, choleskyDecompose, det, directSum, equals, frobeniusNorm, getPrimitiveElement, infNorm, inverse, luDecompose, mapElements, multiply, multiply, multiply, negate, polarDecompose, qrDecompose, scalarDivide, scalarMultiply, scalarProduct, scalarProduct, setAllElements, singularValueDecompose, subtract, subtract, tensorProduct, toComplexMatrix, toIntegerMatrix, toPrimitiveArray, toString, trace, transpose

Methods inherited from class org.jscience.mathematics.algebraic.matrices.AbstractDoubleSquareMatrix

add, isSymmetric, isUnitary, operatorNorm, scalarProduct, subtract

Methods inherited from class org.jscience.mathematics.algebraic.matrices.AbstractDoubleMatrix

abs, add, directSum, equals, equals, getColumn, getElement, getMatrixAsColumns, getMatrixAsRows, getRow, getSet, getSubMatrix, hashCode, horizontalAxisSymmetry, mass, max, mean, min, multiply, multiply, read, reverse, scalarDivide, scalarMultiply, setColumn, setRow, setSubMatrix, subtract, tensorProduct, verticalAxisSymmetry

Methods inherited from class org.jscience.mathematics.algebraic.AbstractMatrix

getElement, getInvalidElementMsg, numColumns, numRows, print, print, print, print, toArray, toArray

Methods inherited from class org.jscience.mathematics.algebraic.AbstractHypermatrix

getDimensions, numDimensions, numElements, numElements, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jscience.mathematics.algebraic.Matrix

getColumn, getElement, getRow, numColumns, numRows, toArray

Methods inherited from interface org.jscience.mathematics.algebraic.Hypermatrix

getDimensions, getElement, numDimensions, numElements, numElements, toArray, toArray

Constructor Detail

DoubleSymmetricMatrix

public DoubleSymmetricMatrix(int size)

Constructs an empty matrix.

Parameters:

size - the number of rows/columns.

DoubleSymmetricMatrix

public DoubleSymmetricMatrix(double[][] array)

Constructs a matrix by wrapping an array.

Parameters:

array - an assigned value.

DoubleSymmetricMatrix

public DoubleSymmetricMatrix(DoubleVector[] array)

Constructs a matrix from an array of vectors (columns).

Parameters:

array - an assigned value.

DoubleSymmetricMatrix

public DoubleSymmetricMatrix(DoubleSymmetricMatrix mat)

Copy constructor.

Parameters:

mat - an assigned value.

Method Detail

setElement

public void setElement(int i,
                       int j,
                       double x)

Also sets the symmetric element.

Overrides:

setElement in class DoubleSquareMatrix

Parameters:

i - DOCUMENT ME!

j - DOCUMENT ME!

x - DOCUMENT ME!

clone

public java.lang.Object clone()

Clone matrix into a new matrix.

Overrides:

clone in class DoubleSquareMatrix

Returns:

the cloned matrix.