JSci.maths.matrices
Class Matrix

java.lang.Object
  JSci.maths.matrices.Matrix

All Implemented Interfaces:

java.io.Serializable, Algebra.Member, Module.Member, VectorSpace.Member, Ring.Member, AbelianGroup.Member, Member

Direct Known Subclasses:

AbstractComplexMatrix, AbstractDoubleMatrix, AbstractIntegerMatrix, RingMatrix

public abstract class Matrix
extends java.lang.Object
implements Algebra.Member

The Matrix superclass provides an abstract encapsulation for matrices.

See Also:

Serialized Form

PlanetMath references:

Matrix

Wikipedia references:

Matrix_(mathematics)

Field Summary

protected int	numCols The number of columns.
protected int	numRows The number of rows.

Constructor Summary

Matrix(int rows, int cols)
Constructs a matrix.

Method Summary

int	columns() Returns the number of columns.
protected static java.lang.String	getInvalidElementMsg(int i, int j) Returns an "invalid element" error message.
int	rows() Returns the number of rows.
abstract Matrix	transpose() Returns the transpose of this matrix.

Methods inherited from class java.lang.Object

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

Methods inherited from interface JSci.maths.algebras.VectorSpace.Member

scalarDivide

Methods inherited from interface JSci.maths.algebras.Module.Member

scalarMultiply

Methods inherited from interface JSci.maths.groups.AbelianGroup.Member

add, negate, subtract

Methods inherited from interface JSci.maths.Member

getSet

Methods inherited from interface JSci.maths.fields.Ring.Member

multiply

Field Detail

numRows

protected final int numRows

The number of rows.

numCols

protected final int numCols

The number of columns.

Constructor Detail

Matrix

public Matrix(int rows,
              int cols)

Constructs a matrix.

Method Detail

rows

public final int rows()

Returns the number of rows.

columns

public final int columns()

Returns the number of columns.

transpose

public abstract Matrix transpose()

Returns the transpose of this matrix.

PlanetMath references:

Transpose

getInvalidElementMsg

protected static java.lang.String getInvalidElementMsg(int i,
                                                       int j)

Returns an "invalid element" error message.

Parameters:

i - row index of the element

j - column index of the element