Package ptolemy.data

Class DoubleMatrixToken

java.lang.Object

ptolemy.data.Token

ptolemy.data.MatrixToken

ptolemy.data.DoubleMatrixToken

public class DoubleMatrixToken
extends MatrixToken

A token that contains a 2-D double matrix.

Since:

Ptolemy II 0.2

Version:

$Id$

Author:

Yuhong Xiong, Jeff Tsay, Christopher Hylands, Steve Neuendorffer, Shuvra S. Bhattacharyya

Pt.AcceptedRating:

Yellow (cxh)

Pt.ProposedRating:

Green (neuendor)

Field Summary

Fields inherited from class ptolemy.data.MatrixToken

_nils, DO_COPY, DO_NOT_COPY

Fields inherited from class ptolemy.data.Token

NIL

Constructor Summary

Constructors

Constructor	Description
DoubleMatrixToken()	Construct an DoubleMatrixToken with a one by one matrix.
DoubleMatrixToken(double[][] value)	Construct a DoubleMatrixToken with the specified 2-D matrix.
DoubleMatrixToken(double[][] value, int copy)	Construct a DoubleMatrixToken with the specified 2-D matrix.
DoubleMatrixToken(double[] value, int rows, int columns)	Construct a DoubleMatrixToken with the specified 1-D matrix.
DoubleMatrixToken(double[] value, int rows, int columns, int copy)	Construct a DoubleMatrixToken with the specified 1-D matrix.
DoubleMatrixToken(java.lang.String init)	Construct a DoubleMatrixToken from the specified string.
DoubleMatrixToken(Token[] tokens, int rows, int columns)	Construct an DoubleMatrixToken from the specified array of tokens.

Method Summary

Modifier and Type	Method	Description
protected MatrixToken	_add(MatrixToken rightArgument)	Return a new token whose value is the value of the argument Token added to the value of this Token.
protected MatrixToken	_addElement(Token rightArgument)	Return a new token whose value is the value of the argument Token added to the value of each element of this Token.
protected MatrixToken	_divideElement(Token rightArgument)	Return a new token whose elements are the result of dividing the elements of this token by the argument.
protected double[]	_getInternalDoubleArray()	Return a reference to the internal 2-D matrix of doubles that represents this Token.
protected MatrixToken	_moduloElement(Token rightArgument)	Return a new token whose elements are the remainders of the elements of this token when divided by the argument.
protected MatrixToken	_multiply(MatrixToken rightArgument)	Return a new token whose value is the value of this token multiplied by the value of the argument token.
protected MatrixToken	_multiplyElement(Token rightArgument)	Return a new token whose value is the value of this token multiplied by the value of the argument token.
protected MatrixToken	_subtract(MatrixToken rightArgument)	Return a new token whose value is the value of the argument token subtracted from the value of this token.
protected MatrixToken	_subtractElement(Token rightArgument)	Return a new token whose value is the value of the argument Token subtracted from the value of each element of this Token.
protected MatrixToken	_subtractElementReverse(Token rightArgument)	Return a new token whose value is the value of the argument Token subtracted from the value of each element of this Token.
Complex[][]	complexMatrix()	Return the content of this token as a 2-D Complex matrix.
static DoubleMatrixToken	convert(Token token)	Convert the specified token into an instance of DoubleMatrixToken.
MatrixToken	crop(int rowStart, int colStart, int rowSpan, int colSpan)	Return a new matrix that is a sub-matrix of this matrix.
double[][]	doubleMatrix()	Return the content in the token as a 2-D double matrix.
boolean	equals(java.lang.Object object)	Return true if the argument is an instance of DoubleMatrixToken of the same dimensions and the corresponding elements of the matrices are equal.
int	getColumnCount()	Return the number of columns in the matrix.
Token	getElementAsToken(int row, int column)	Return the element of the matrix at the specified row and column in a DoubleToken.
double	getElementAt(int row, int column)	Return the element of the contained matrix at the specified row and column.
Type	getElementType()	Return the Type of the tokens contained in this matrix token.
int	getRowCount()	Return the number of rows in the matrix.
Type	getType()	Return the type of this token.
int	hashCode()	Return a hash code value for this token.
MatrixToken	join(MatrixToken[][] matrices)	Join a matrix of matrices into a single matrix by tiling.
Token	one()	Return a new Token representing the left multiplicative identity.
Token	oneRight()	Return a new Token representing the right multiplicative identity.
MatrixToken[][]	split(int[] rows, int[] columns)	Split this matrix into multiple matrices.
Token	zero()	Return a new Token representing the additive identity.

Methods inherited from class ptolemy.data.MatrixToken

_elementIsNil, _isCloseTo, _isEqualTo, add, addReverse, arrayToMatrix, arrayToMatrix, arrayToMatrixReturnType, booleanMatrix, create, createSequence, createSequenceReturnType, createTokenSequence, determineSequenceLength, divide, divideReverse, fixMatrix, intMatrix, isCloseTo, isEqualTo, longMatrix, matrixToArray, matrixToArrayReturnType, modulo, moduloReverse, multiply, multiplyReverse, subtract, subtractReverse, toArray, toArrayColumnMajor, toArrayReturnType, toString

Methods inherited from class ptolemy.data.Token

isCloseTo, isNil, notSupportedConversionMessage, notSupportedIncomparableConversionMessage, notSupportedIncomparableMessage, notSupportedMessage, notSupportedNullNilStringMessage, pow, zeroReturnType

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleMatrixToken

public DoubleMatrixToken()

Construct an DoubleMatrixToken with a one by one matrix. The only element in the matrix has value 0.0

DoubleMatrixToken

public DoubleMatrixToken(double[] value,
                         int rows,
                         int columns)
                  throws IllegalActionException

Construct a DoubleMatrixToken with the specified 1-D matrix. Make a copy of the matrix and store the copy, so that changes on the specified matrix after this token is constructed will not affect the content of this token.

Parameters:

value - The 1-D matrix.

rows - The number of rows.

columns - The number of columns.

Throws:

IllegalActionException - If the specified matrix is null.

DoubleMatrixToken

public DoubleMatrixToken(double[] value,
                         int rows,
                         int columns,
                         int copy)
                  throws IllegalActionException

Construct a DoubleMatrixToken with the specified 1-D matrix. If copy is DO_COPY, make a copy of the matrix and store the copy, so that changes on the specified matrix after this token is constructed will not affect the content of this token. If copy is DO_NOT_COPY, just reference the matrix (do not copy its contents). This saves some time and memory. The argument matrix should NOT be modified after this constructor is called to preserve immutability.

Parameters:

value - The 1-D matrix.

rows - The number of rows.

columns - The number of columns.

copy - If this parameter is MatrixToken.DO_COPY, then the value matrix is copied. If this parameter is MatrixToken.DO_NOT_COPY, then the value matrix is NOT copied and should not be modified after construction of this object.

Throws:

IllegalActionException - If the specified matrix is null.

DoubleMatrixToken

public DoubleMatrixToken(double[][] value)
                  throws IllegalActionException

Construct a DoubleMatrixToken with the specified 2-D matrix. Make a copy of the matrix and store the copy, so that changes on the specified matrix after this token is constructed will not affect the content of this token.

Parameters:

value - The 2-D matrix used to initialize this object.

Throws:

IllegalActionException - If the specified matrix is null.

DoubleMatrixToken

public DoubleMatrixToken(double[][] value,
                         int copy)
                  throws IllegalActionException

Construct a DoubleMatrixToken with the specified 2-D matrix. If copy is DO_COPY, make a copy of the matrix and store the copy, so that changes on the specified matrix after this token is constructed will not affect the content of this token. If copy is DO_NOT_COPY, just reference the matrix (do not copy its contents). This saves some time and memory. The argument matrix should NOT be modified after this constructor is called to preserve immutability, although this is not enforced.

Parameters:

value - The 2-D matrix used to initialize this object.

copy - If this parameter is MatrixToken.DO_COPY, then the value matrix is copied. If this parameter is MatrixToken.DO_NOT_COPY, then the value matrix is NOT copied and should not be modified after construction of this object.

Throws:

IllegalActionException - If the specified matrix is null.

DoubleMatrixToken

public DoubleMatrixToken(java.lang.String init)
                  throws IllegalActionException

Construct a DoubleMatrixToken from the specified string.

Parameters:

init - A string expression of a 2-D double matrix.

Throws:

IllegalActionException - If the string does not contain a parsable 2-D double matrix.

DoubleMatrixToken

public DoubleMatrixToken(Token[] tokens,
                         int rows,
                         int columns)
                  throws IllegalActionException

Construct an DoubleMatrixToken from the specified array of tokens. The tokens in the array must be scalar tokens convertible into integers.

Parameters:

tokens - The array of tokens, which must contains rows*columns ScalarTokens.

rows - The number of rows in the matrix to be created.

columns - The number of columns in the matrix to be created.

Throws:

IllegalActionException - If the array of tokens is null, or the length of the array is not correct, or if one of the elements of the array is null, or if one of the elements of the array cannot be losslessly converted to an integer.

Method Detail

complexMatrix

public final Complex[][] complexMatrix()

Return the content of this token as a 2-D Complex matrix.

Overrides:

complexMatrix in class MatrixToken

Returns:

A 2-D Complex matrix

convert

public static DoubleMatrixToken convert(Token token)
                                 throws IllegalActionException

Convert the specified token into an instance of DoubleMatrixToken. This method does lossless conversion. If the argument is already an instance of DoubleMatrixToken, it is returned without any change. Otherwise, if the argument is below DoubleMatrixToken in the type hierarchy, it is converted to an instance of DoubleMatrixToken or one of the subclasses of DoubleMatrixToken and returned. If none of the above condition is met, an exception is thrown.

Parameters:

token - The token to be converted to a DoubleMatrixToken.

Returns:

A DoubleMatrixToken

Throws:

IllegalActionException - If the conversion cannot be carried out.

crop

public MatrixToken crop(int rowStart,
                        int colStart,
                        int rowSpan,
                        int colSpan)
                 throws IllegalActionException

Return a new matrix that is a sub-matrix of this matrix.

Overrides:

crop in class MatrixToken

Parameters:

rowStart - The row to start on.

colStart - The column to start on.

rowSpan - The number of rows to copy.

colSpan - The number of columns to copy.

Returns:

a sub-matrix of this matrix.

Throws:

IllegalActionException - If the returned matrix is empty or if the specified parameters result in out of bounds accesses.

doubleMatrix

public final double[][] doubleMatrix()

Return the content in the token as a 2-D double matrix. The returned matrix is a copy so the caller is free to modify it.

Overrides:

doubleMatrix in class MatrixToken

Returns:

A 2-D double matrix.

equals

public boolean equals(java.lang.Object object)

Return true if the argument is an instance of DoubleMatrixToken of the same dimensions and the corresponding elements of the matrices are equal.

Overrides:

equals in class java.lang.Object

Parameters:

object - An instance of Object.

Returns:

True if the argument is an instance of DoubleMatrixToken of the same dimensions and the corresponding elements of the matrices are equal.

getColumnCount

public final int getColumnCount()

Return the number of columns in the matrix.

Specified by:

getColumnCount in class MatrixToken

Returns:

The number of columns in the matrix.

getElementAsToken

public final Token getElementAsToken(int row,
                                     int column)
                              throws java.lang.ArrayIndexOutOfBoundsException

Return the element of the matrix at the specified row and column in a DoubleToken.

Specified by:

getElementAsToken in class MatrixToken

Parameters:

row - The row index of the desired element.

column - The column index of the desired element.

Returns:

A DoubleToken containing the matrix element.

Throws:

java.lang.ArrayIndexOutOfBoundsException - If the specified row or column number is outside the range of the matrix.

getElementAt

public final double getElementAt(int row,
                                 int column)

Return the element of the contained matrix at the specified row and column.

Parameters:

row - The row index of the desired element.

column - The column index of the desired element.

Returns:

The double at the specified matrix entry.

Throws:

java.lang.ArrayIndexOutOfBoundsException - If the specified row or column number is outside the range of the matrix.

getElementType

public Type getElementType()

Return the Type of the tokens contained in this matrix token. This must be a type representing a scalar token.

Specified by:

getElementType in class MatrixToken

Returns:

BaseType.DOUBLE.

getRowCount

public final int getRowCount()

Return the number of rows in the matrix.

Specified by:

getRowCount in class MatrixToken

Returns:

The number of rows in the matrix.

getType

public final Type getType()

Return the type of this token.

Overrides:

getType in class Token

Returns:

BaseType.DOUBLE_MATRIX

hashCode

public int hashCode()

Return a hash code value for this token. This method returns the integer portion of the sum of the elements.

Overrides:

hashCode in class java.lang.Object

Returns:

A hash code value for this token.

join

public MatrixToken join(MatrixToken[][] matrices)
                 throws IllegalActionException

Join a matrix of matrices into a single matrix by tiling. All matrices in the matrix must be of the same type, the same type as this matrix. But none of them needs to actually be this matrix. This base class simply throws an exception. Derived classes provide the implementation. The number of columns in the resulting matrix is the sum of the number of columns in the first row of the argument. The number of rows in the resulting matrix is the sum of the number of rows in the first column of the argument. The matrices are copied into the result starting at the position determined by the first row or column. If the matrices overlap, then while copying left to right, top-to-bottom, data will be overwritten. If there are gaps, the resulting matrix will be filled with zeros.

Overrides:

join in class MatrixToken

Parameters:

matrices - A two-dimensional array of matrix tokens.

Returns:

A new matrix token of the same type as the elements in the input matrix of matrix tokens.

Throws:

IllegalActionException - If the types of the matrices in the input are not all the same, or if tiling fails due to size incompatibilities, or if the input matrix has no tokens.

one

public final Token one()

Return a new Token representing the left multiplicative identity. The returned token contains an identity matrix whose dimensions are the same as the number of rows of the matrix contained in this token.

Overrides:

one in class Token

Returns:

A new DoubleMatrixToken containing the left multiplicative identity.

oneRight

public final Token oneRight()

Return a new Token representing the right multiplicative identity. The returned token contains an identity matrix whose dimensions are the same as the number of columns of the matrix contained in this token.

Overrides:

oneRight in class MatrixToken

Returns:

A new DoubleMatrixToken containing the right multiplicative identity.

split

public MatrixToken[][] split(int[] rows,
                             int[] columns)

Split this matrix into multiple matrices. See the base class for documentation.

Overrides:

split in class MatrixToken

Parameters:

rows - The number of rows per submatrix.

columns - The number of columns per submatrix.

Returns:

An array of matrix tokens.

zero

public final Token zero()

Return a new Token representing the additive identity. The returned token contains a matrix whose elements are all zero, and the size of the matrix is the same as the matrix contained in this token.

Overrides:

zero in class Token

Returns:

A new DoubleMatrixToken containing the additive identity.

_add

protected MatrixToken _add(MatrixToken rightArgument)
                    throws IllegalActionException

Return a new token whose value is the value of the argument Token added to the value of this Token. It is assumed that the type of the argument is DoubleMatrixToken.

Overrides:

_add in class MatrixToken

Parameters:

rightArgument - The token to add to this token.

Returns:

A new DoubleMatrixToken containing the result.

Throws:

IllegalActionException - If the units are not compatible, or this operation is not supported by the derived class.

_addElement

protected MatrixToken _addElement(Token rightArgument)
                           throws IllegalActionException

Return a new token whose value is the value of the argument Token added to the value of each element of this Token. It is assumed that the type of the argument is the same as the type of each element of this class or is a matrix with just one element.

Overrides:

_addElement in class MatrixToken

Parameters:

rightArgument - The token to add to this token.

Returns:

A new Token containing the result.

Throws:

IllegalActionException - If this operation is not supported by the derived class.

_divideElement

protected MatrixToken _divideElement(Token rightArgument)
                              throws IllegalActionException

Return a new token whose elements are the result of dividing the elements of this token by the argument. It is assumed that the type of the argument is the same as the type of each element of this class or is a matrix with just one element.

Overrides:

_divideElement in class MatrixToken

Parameters:

rightArgument - The token that divides this token.

Returns:

A new Token containing the result.

Throws:

IllegalActionException - If this operation is not supported by the derived class.

_getInternalDoubleArray

protected double[] _getInternalDoubleArray()

Return a reference to the internal 2-D matrix of doubles that represents this Token. Because no copying is done, the contents must NOT be modified to preserve the immutability of Token.

Returns:

A 2-D double matrix.

_moduloElement

protected MatrixToken _moduloElement(Token rightArgument)
                              throws IllegalActionException

Return a new token whose elements are the remainders of the elements of this token when divided by the argument. It is guaranteed by the caller that the type of the argument is the same as the type of each element of this class or a scalar of the same type as the element.

Overrides:

_moduloElement in class MatrixToken

Parameters:

rightArgument - The token that performs modulo on this token.

Returns:

A new Token containing the result.

Throws:

IllegalActionException - If this operation is not supported by the derived class.

_multiply

protected MatrixToken _multiply(MatrixToken rightArgument)
                         throws IllegalActionException

Return a new token whose value is the value of this token multiplied by the value of the argument token. It is assumed that the type of the argument is DoubleMatrixToken.

Overrides:

_multiply in class MatrixToken

Parameters:

rightArgument - The token to multiply this token by.

Returns:

A new DoubleMatrixToken containing the result.

Throws:

IllegalActionException - If the units are not compatible, or this operation is not supported by the derived class.

_multiplyElement

protected MatrixToken _multiplyElement(Token rightArgument)
                                throws IllegalActionException

Return a new token whose value is the value of this token multiplied by the value of the argument token. It is assumed that the argument has the same type as the elements of this matrix or is a matrix with just one element.

Overrides:

_multiplyElement in class MatrixToken

Parameters:

rightArgument - The token to multiply this token by.

Returns:

A new DoubleMatrixToken containing the result.

Throws:

IllegalActionException - If this method is not supported by the derived class.

_subtract

protected MatrixToken _subtract(MatrixToken rightArgument)
                         throws IllegalActionException

Return a new token whose value is the value of the argument token subtracted from the value of this token. It is assumed that the type of the argument is DoubleMatrixToken.

Overrides:

_subtract in class MatrixToken

Parameters:

rightArgument - The token to subtract from this token.

Returns:

A new DoubleMatrixToken containing the result.

Throws:

IllegalActionException - If the units are not compatible, or this operation is not supported by the derived class.

_subtractElement

protected MatrixToken _subtractElement(Token rightArgument)
                                throws IllegalActionException

Return a new token whose value is the value of the argument Token subtracted from the value of each element of this Token. It is assumed that the type of the argument is the same as the type of each element of this class or is a matrix with just one element.

Overrides:

_subtractElement in class MatrixToken

Parameters:

rightArgument - The token to subtract from this token.

Returns:

A new Token containing the result.

Throws:

IllegalActionException - If this operation is not supported by the derived class.

_subtractElementReverse

protected MatrixToken _subtractElementReverse(Token rightArgument)
                                       throws IllegalActionException

Return a new token whose value is the value of the argument Token subtracted from the value of each element of this Token. It is assumed that the type of the argument is the same as the type of each element of this class or is a matrix with just one element.

Overrides:

_subtractElementReverse in class MatrixToken

Parameters:

rightArgument - The token to subtract from this token.

Returns:

A new Token containing the result.

Throws:

IllegalActionException - If this operation is not supported by the derived class.