Constructor Detail

• Matrix

  public Matrix​(int nr,
                int nc)

  Deprecated.
  Constructs a matrix and initializes it with default values.

  Parameters:

  nr - the number of rows

  nc - the number of columns

• Matrix

  public Matrix​(double[][] array)
         throws java.lang.Exception

  Deprecated.
  Constructs a matrix using a given array.

  Parameters:

  array - the values of the matrix

  Throws:

  java.lang.Exception

• Matrix

  public Matrix​(java.io.Reader r)
         throws java.lang.Exception

  Deprecated.
  Reads a matrix from a reader. The first line in the file should contain the number of rows and columns. Subsequent lines contain elements of the matrix.

  Parameters:

  r - the reader containing the matrix

  Throws:

  java.lang.Exception - if an error occurs

Method Detail

• clone

  public java.lang.Object clone()

  Deprecated.
  Creates and returns a clone of this object.

  Returns:

  a clone of this instance.

  Throws:

  java.lang.Exception - if an error occurs

• write

  public void write​(java.io.Writer w)
             throws java.lang.Exception

  Deprecated.
  Writes out a matrix.

  Parameters:

  w - the output Writer

  Throws:

  java.lang.Exception - if an error occurs

• getElement

  public final double getElement​(int rowIndex,
                                 int columnIndex)

  Deprecated.
  Returns the value of a cell in the matrix.

  Parameters:

  rowIndex - the row's index

  columnIndex - the column's index

  Returns:

  the value of the cell of the matrix

• addElement

  public final void addElement​(int rowIndex,
                               int columnIndex,
                               double value)

  Deprecated.
  Add a value to an element.

  Parameters:

  rowIndex - the row's index.

  columnIndex - the column's index.

  value - the value to add.

• numRows

  public final int numRows()

  Deprecated.
  Returns the number of rows in the matrix.

  Returns:

  the number of rows

• numColumns

  public final int numColumns()

  Deprecated.
  Returns the number of columns in the matrix.

  Returns:

  the number of columns

• setElement

  public final void setElement​(int rowIndex,
                               int columnIndex,
                               double value)

  Deprecated.
  Sets an element of the matrix to the given value.

  Parameters:

  rowIndex - the row's index

  columnIndex - the column's index

  value - the value

• setRow

  public final void setRow​(int index,
                           double[] newRow)

  Deprecated.
  Sets a row of the matrix to the given row. Performs a deep copy.

  Parameters:

  index - the row's index

  newRow - an array of doubles

• getRow

  public double[] getRow​(int index)

  Deprecated.
  Gets a row of the matrix and returns it as double array.

  Parameters:

  index - the row's index

  Returns:

  an array of doubles

• getColumn

  public double[] getColumn​(int index)

  Deprecated.
  Gets a column of the matrix and returns it as a double array.

  Parameters:

  index - the column's index

  Returns:

  an array of doubles

• setColumn

  public final void setColumn​(int index,
                              double[] newColumn)

  Deprecated.
  Sets a column of the matrix to the given column. Performs a deep copy.

  Parameters:

  index - the column's index

  newColumn - an array of doubles

• toString

  public java.lang.String toString()

  Deprecated.
  Converts a matrix to a string

  Overrides:

  toString in class java.lang.Object

  Returns:

  the converted string

• add

  public final Matrix add​(Matrix other)

  Deprecated.
  Returns the sum of this matrix with another.

  Returns:

  a matrix containing the sum.

• transpose

  public final Matrix transpose()

  Deprecated.
  Returns the transpose of a matrix.

  Returns:

  the transposition of this instance.

• isSymmetric

  public boolean isSymmetric()

  Deprecated.
  Returns true if the matrix is symmetric.

  Returns:

  boolean true if matrix is symmetric.

• multiply

  public final Matrix multiply​(Matrix b)

  Deprecated.
  Returns the multiplication of two matrices

  Parameters:

  b - the multiplication matrix

  Returns:

  the product matrix

• regression

  public final double[] regression​(Matrix y,
                                   double ridge)

  Deprecated.
  Performs a (ridged) linear regression.

  Parameters:

  y - the dependent variable vector

  ridge - the ridge parameter

  Returns:

  the coefficients

  Throws:

  java.lang.IllegalArgumentException - if not successful

• regression

  public final double[] regression​(Matrix y,
                                   double[] w,
                                   double ridge)

  Deprecated.
  Performs a weighted (ridged) linear regression.

  Parameters:

  y - the dependent variable vector

  w - the array of data point weights

  ridge - the ridge parameter

  Returns:

  the coefficients

  Throws:

  java.lang.IllegalArgumentException - if the wrong number of weights were provided.

• getL

  public Matrix getL()
              throws java.lang.Exception

  Deprecated.
  Returns the L part of the matrix. This does only make sense after LU decomposition.

  Returns:

  matrix with the L part of the matrix;

  Throws:

  java.lang.Exception

  See Also:

  LUDecomposition()

• getU

  public Matrix getU()
              throws java.lang.Exception

  Deprecated.
  Returns the U part of the matrix. This does only make sense after LU decomposition.

  Returns:

  matrix with the U part of a matrix;

  Throws:

  java.lang.Exception

  See Also:

  LUDecomposition()

• LUDecomposition

  public int[] LUDecomposition()
                        throws java.lang.Exception

  Deprecated.
  Performs a LUDecomposition on the matrix. It changes the matrix into its LU decomposition.

  Returns:

  the indices of the row permutation

  Throws:

  java.lang.Exception

• solve

  public void solve​(double[] bb)
             throws java.lang.Exception

  Deprecated.
  Solve A*X = B using backward substitution. A is current object (this). Note that this matrix will be changed! B parameter bb. X returned in parameter bb.

  Parameters:

  bb - first vector B in above equation then X in same equation.

  Throws:

  java.lang.Exception

• eigenvalueDecomposition

  public void eigenvalueDecomposition​(double[][] V,
                                      double[] d)
                               throws java.lang.Exception

  Deprecated.
  Performs Eigenvalue Decomposition using Householder QR Factorization Matrix must be symmetrical. Eigenvectors are return in parameter V, as columns of the 2D array. (Real parts of) Eigenvalues are returned in parameter d.

  Parameters:

  V - double array in which the eigenvectors are returned

  d - array in which the eigenvalues are returned

  Throws:

  java.lang.Exception - if matrix is not symmetric

• toMatlab

  public java.lang.String toMatlab()

  Deprecated.
  converts the Matrix into a single line Matlab string: matrix is enclosed by parentheses, rows are separated by semicolon and single cells by blanks, e.g., [1 2; 3 4].

  Returns:

  the matrix in Matlab single line format

• parseMatlab

  public static Matrix parseMatlab​(java.lang.String matlab)
                            throws java.lang.Exception

  Deprecated.
  creates a matrix from the given Matlab string.

  Parameters:

  matlab - the matrix in matlab format

  Returns:

  the matrix represented by the given string

  Throws:

  java.lang.Exception

  See Also:

  toMatlab()

• getRevision

  public java.lang.String getRevision()

  Deprecated.
  Returns the revision string.

  Specified by:

  getRevision in interface RevisionHandler

  Returns:

  the revision

• main

  public static void main​(java.lang.String[] ops)

  Deprecated.
  Main method for testing this class.