SparseRCDComplexMatrix2D
cern.colt.matrix.tdcomplex.impl

Class SparseRCDComplexMatrix2D

  • All Implemented Interfaces:
    Serializable, Cloneable


    public class SparseRCDComplexMatrix2Dextends WrapperDComplexMatrix2D
    Sparse row-compressed 2-d matrix holding complex elements. First see the package summary and javadoc tree view to get the broad picture.

    Implementation:

    Internally uses the standard sparse row-compressed format
    Note that this implementation is not synchronized.

    Memory requirements:

    Cells that

    • are never set to non-zero values do not use any memory.
    • switch from zero to non-zero state do use memory.
    • switch back from non-zero to zero state also do use memory. Their memory is not automatically reclaimed (because of the lists vs. arrays). Reclamation can be triggered via trimToSize().
    See Also:
    Serialized Form
    • Constructor Detail

      • SparseRCDComplexMatrix2D

        public SparseRCDComplexMatrix2D(double[][] values)
        Constructs a matrix with a copy of the given values. values is required to have the form values[row][column] and have exactly the same number of columns in every row.

        The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.

        Parameters:
        values - The values to be filled into the new matrix.
        Throws:
        IllegalArgumentException - if for any 1 <= row < values.length: values[row].length != values[row-1].length .
      • SparseRCDComplexMatrix2D

        public SparseRCDComplexMatrix2D(int rows,                        int columns)
        Constructs a matrix with a given number of rows and columns. All entries are initially 0.
        Parameters:
        rows - the number of rows the matrix shall have.
        columns - the number of columns the matrix shall have.
        Throws:
        IllegalArgumentException - if rows<0 || columns<0 || (double)columns*rows > Integer.MAX_VALUE .
      • SparseRCDComplexMatrix2D

        public SparseRCDComplexMatrix2D(int rows,                        int columns,                        int nzmax)
        Constructs a matrix with a given number of rows and columns. All entries are initially 0.
        Parameters:
        rows - the number of rows the matrix shall have.
        columns - the number of columns the matrix shall have.
        nzmax - maximum number of nonzero elements
        Throws:
        IllegalArgumentException - if rows<0 || columns<0 || (double)columns*rows > Integer.MAX_VALUE .
      • SparseRCDComplexMatrix2D

        public SparseRCDComplexMatrix2D(int rows,                        int columns,                        int[] rowIndexes,                        int[] columnIndexes,                        double re,                        double im,                        boolean removeDuplicates)
        Constructs a matrix with indexes given in the coordinate format and single value.
        Parameters:
        rows - the number of rows the matrix shall have.
        columns - the number of columns the matrix shall have.
        rowIndexes - row indexes
        columnIndexes - column indexes
        re - real part of numerical value
        im - imaginary part of numerical value
        removeDuplicates - if true, then duplicates (if any) are removed
      • SparseRCDComplexMatrix2D

        public SparseRCDComplexMatrix2D(int rows,                        int columns,                        int[] rowIndexes,                        int[] columnIndexes,                        double[] values,                        boolean removeDuplicates,                        boolean removeZeroes)
        Constructs a matrix with indexes and values given in the coordinate format.
        Parameters:
        rows - the number of rows the matrix shall have.
        columns - the number of columns the matrix shall have.
        rowIndexes - row indexes
        columnIndexes - column indexes
        values - numerical values
        removeDuplicates - if true, then duplicates (if any) are removed
        removeZeroes - if true, then zeroes (if any) are removed
      • SparseRCDComplexMatrix2D

        public SparseRCDComplexMatrix2D(int rows,                        int columns,                        int[] rowPointers,                        int[] columnIndexes,                        double[] values)
        Constructs a matrix with given parameters. The arrays are not copied.
        Parameters:
        rows - the number of rows the matrix shall have.
        columns - the number of columns the matrix shall have.
        rowPointers - row pointers
        columnIndexes - column indexes
        values - numerical values
    • Method Detail

      • assign

        public DComplexMatrix2D assign(double re,                      double im)
        Description copied from class: DComplexMatrix2D
        Sets all cells to the state specified by re and im.
        Overrides:
        assign in class DComplexMatrix2D
        Parameters:
        re - the real part of the value to be filled into the cells.
        im - the imaginary part of the value to be filled into the cells.
        Returns:
        this (for convenience only).
      • assign

        public DComplexMatrix2D assign(DComplexMatrix2D source)
        Description copied from class: DComplexMatrix2D
        Replaces all cell values of the receiver with the values of another matrix. Both matrices must have the same number of rows and columns. If both matrices share the same cells (as is the case if they are views derived from the same matrix) and intersect in an ambiguous way, then replaces as if using an intermediate auxiliary deep copy of other.
        Overrides:
        assign in class DComplexMatrix2D
        Parameters:
        source - the source matrix to copy from (may be identical to the receiver).
        Returns:
        this (for convenience only).
      • cardinality

        public int cardinality()
        Description copied from class: DComplexMatrix2D
        Returns the number of cells having non-zero values; ignores tolerance.
        Overrides:
        cardinality in class DComplexMatrix2D
        Returns:
        the number of cells having non-zero values.
      • forEachNonZero

        public DComplexMatrix2D forEachNonZero(IntIntDComplexFunction function)
        Description copied from class: DComplexMatrix2D
        Assigns the result of a function to each non-zero cell. Use this method for fast special-purpose iteration. If you want to modify another matrix instead of this (i.e. work in read-only mode), simply return the input value unchanged. Parameters to function are as follows: first==row, second==column, third==nonZeroValue.
        Overrides:
        forEachNonZero in class DComplexMatrix2D
        Parameters:
        function - a function object taking as argument the current non-zero cell's row, column and value.
        Returns:
        this (for convenience only).
      • getColumnCompressed

        public SparseCCDComplexMatrix2D getColumnCompressed()
        Returns a new matrix that has the same elements as this matrix, but is in a column-compressed form. This method creates a new object (not a view), so changes in the returned matrix are NOT reflected in this matrix.
        Returns:
        this matrix in a column-compressed form
      • getColumnIndexes

        public int[] getColumnIndexes()
        Returns column indexes
        Returns:
        column indexes
      • getDense

        public DenseDComplexMatrix2D getDense()
        Returns a new matrix that has the same elements as this matrix, but is in a dense form. This method creates a new object (not a view), so changes in the returned matrix are NOT reflected in this matrix.
        Returns:
        this matrix in a dense form
      • getQuick

        public double[] getQuick(int row,                int column)
        Description copied from class: DComplexMatrix2D
        Returns the matrix cell value at coordinate [row,column].

        Provided with invalid parameters this method may return invalid objects without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().

        Overrides:
        getQuick in class WrapperDComplexMatrix2D
        Parameters:
        row - the index of the row-coordinate.
        column - the index of the column-coordinate.
        Returns:
        the value at the specified coordinate.
      • getRowPointers

        public int[] getRowPointers()
        Returns row pointers
        Returns:
        row pointers
      • getConjugateTranspose

        public SparseRCDComplexMatrix2D getConjugateTranspose()
        Description copied from class: DComplexMatrix2D
        Returns a new matrix that is a complex conjugate of this matrix. If unconjugated complex transposition is needed, one should use viewDice() method. This method creates a new object (not a view), so changes in the returned matrix are NOT reflected in this matrix.
        Overrides:
        getConjugateTranspose in class DComplexMatrix2D
        Returns:
        a complex conjugate matrix
      • getValues

        public double[] getValues()
        Returns numerical values
        Returns:
        numerical values
      • like

        public DComplexMatrix2D like(int rows,                    int columns)
        Description copied from class: DComplexMatrix2D
        Construct and returns a new empty matrix of the same dynamic type as the receiver, having the specified number of rows and columns. For example, if the receiver is an instance of type DenseComplexMatrix2D the new matrix must also be of type DenseComplexMatrix2D. In general, the new matrix should have internal parametrization as similar as possible.
        Overrides:
        like in class WrapperDComplexMatrix2D
        Parameters:
        rows - the number of rows the matrix shall have.
        columns - the number of columns the matrix shall have.
        Returns:
        a new empty matrix of the same dynamic type.
      • like1D

        public DComplexMatrix1D like1D(int size)
        Description copied from class: DComplexMatrix2D
        Construct and returns a new 1-d matrix of the corresponding dynamic type, entirelly independent of the receiver. For example, if the receiver is an instance of type DenseComplexMatrix2D the new matrix must be of type DenseComplexMatrix1D.
        Overrides:
        like1D in class WrapperDComplexMatrix2D
        Parameters:
        size - the number of cells the matrix shall have.
        Returns:
        a new matrix of the corresponding dynamic type.
      • removeDuplicates

        public void removeDuplicates()
        Removes (sums) duplicate entries (if any}
      • removeZeroes

        public void removeZeroes()
        Removes zero entries (if any)
      • setQuick

        public void setQuick(int row,            int column,            double[] value)
        Description copied from class: DComplexMatrix2D
        Sets the matrix cell at coordinate [row,column] to the specified value.

        Provided with invalid parameters this method may access illegal indexes without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().

        Overrides:
        setQuick in class WrapperDComplexMatrix2D
        Parameters:
        row - the index of the row-coordinate.
        column - the index of the column-coordinate.
        value - the value to be filled into the specified cell.
      • setQuick

        public void setQuick(int row,            int column,            double re,            double im)
        Description copied from class: DComplexMatrix2D
        Sets the matrix cell at coordinate [row,column] to the specified value.

        Provided with invalid parameters this method may access illegal indexes without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().

        Overrides:
        setQuick in class WrapperDComplexMatrix2D
        Parameters:
        row - the index of the row-coordinate.
        column - the index of the column-coordinate.
        re - the real part of the value to be filled into the specified cell.
        im - the imaginary part of the value to be filled into the specified cell.
      • toString

        public String toString()
        Description copied from class: DComplexMatrix2D
        Returns a string representation using default formatting ("%.4f").
        Overrides:
        toString in class DComplexMatrix2D
        Returns:
        a string representation of the matrix.
      • trimToSize

        public void trimToSize()
        Description copied from class: AbstractMatrix
        Releases any superfluous internal memory. An application can use this operation to minimize the storage of the receiver.

        This default implementation does nothing. Override this method if necessary.

        Overrides:
        trimToSize in class AbstractMatrix
      • zMult

        public DComplexMatrix1D zMult(DComplexMatrix1D y,                     DComplexMatrix1D z,                     double[] alpha,                     double[] beta,                     boolean transposeA)
        Description copied from class: DComplexMatrix2D
        Linear algebraic matrix-vector multiplication; z = alpha * A * y + beta*z. Where A == this.
        Note: Matrix shape conformance is checked after potential transpositions.
        Overrides:
        zMult in class DComplexMatrix2D
        Parameters:
        y - the source vector.
        z - the vector where results are to be stored. Set this parameter to null to indicate that a new result vector shall be constructed.
        Returns:
        z (for convenience only).
      • zMult

        public DComplexMatrix2D zMult(DComplexMatrix2D B,                     DComplexMatrix2D C,                     double[] alpha,                     double[] beta,                     boolean transposeA,                     boolean transposeB)
        Description copied from class: DComplexMatrix2D
        Linear algebraic matrix-matrix multiplication; C = alpha * A x B + beta*C. Matrix shapes: A(m x n), B(n x p), C(m x p).
        Note: Matrix shape conformance is checked after potential transpositions.
        Overrides:
        zMult in class DComplexMatrix2D
        Parameters:
        B - the second source matrix.
        C - the matrix where results are to be stored. Set this parameter to null to indicate that a new result matrix shall be constructed.
        Returns:
        C (for convenience only).

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