DenseLargeDComplexMatrix2D
cern.colt.matrix.tdcomplex.impl

Class DenseLargeDComplexMatrix2D

  • All Implemented Interfaces:
    Serializable, Cloneable


    public class DenseLargeDComplexMatrix2Dextends WrapperDComplexMatrix2D
    Dense 2-d matrix holding complex elements.
    Implementation:

    This data structure allows to store more than 2^31 elements. Internally holds one two-dimensional array, elements[rows][2*columns]. Complex data is represented by 2 double values in sequence, i.e. elements[row][2*column] constitute the real part and elements[row][2*column+1] constitute the imaginary part. Note that this implementation is not synchronized.

    See Also:
    Serialized Form
    • Constructor Detail

      • DenseLargeDComplexMatrix2D

        public DenseLargeDComplexMatrix2D(int rows,                          int columns)
    • Method Detail

      • fft2

        public void fft2()
        Computes the 2D discrete Fourier transform (DFT) of this matrix.
        Overrides:
        fft2 in class WrapperDComplexMatrix2D
      • fftColumns

        public void fftColumns()
        Computes the discrete Fourier transform (DFT) of each column of this matrix.
        Overrides:
        fftColumns in class WrapperDComplexMatrix2D
      • fftRows

        public void fftRows()
        Computes the discrete Fourier transform (DFT) of each row of this matrix.
        Overrides:
        fftRows in class WrapperDComplexMatrix2D
      • ifft2

        public void ifft2(boolean scale)
        Computes the 2D inverse of the discrete Fourier transform (IDFT) of this matrix.
        Overrides:
        ifft2 in class WrapperDComplexMatrix2D
        Parameters:
        scale - if true then scaling is performed
      • ifftColumns

        public void ifftColumns(boolean scale)
        Computes the inverse of the discrete Fourier transform (IDFT) of each column of this matrix.
        Overrides:
        ifftColumns in class WrapperDComplexMatrix2D
        Parameters:
        scale - if true then scaling is performed
      • ifftRows

        public void ifftRows(boolean scale)
        Computes the inverse of the discrete Fourier transform (IDFT) of each row of this matrix.
        Overrides:
        ifftRows in class WrapperDComplexMatrix2D
        Parameters:
        scale - if true then scaling is performed
      • 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.
      • 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.
      • 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.

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