Class JSci.maths.DoubleMatrix
All Packages Class Hierarchy This Package Previous Next Index
Class JSci.maths.DoubleMatrix
java.lang.Object
|
+----JSci.maths.Matrix
|
+----JSci.maths.DoubleMatrix
- public class DoubleMatrix
- extends Matrix
The DoubleMatrix class provides an object for encapsulating matrices containing doubles.
-
matrix
- Array containing the elements of the matrix.
-
DoubleMatrix()
- Constructs a matrix.
-
DoubleMatrix(double[][])
- Constructs a matrix by wrapping an array.
-
DoubleMatrix(DoubleVector[])
- Constructs a matrix from an array of vectors.
-
DoubleMatrix(int, int)
- Constructs an empty matrix.
-
clone()
- Creates a clone of this matrix.
-
columns()
- Returns the number of columns.
-
equals(Object)
- Compares two double matrices for equality.
-
frobeniusNorm()
- Returns the Frobenius norm.
-
getElement(int, int)
- Returns an element of the matrix.
-
hashCode()
- Returns a hashcode for this matrix.
-
infNorm()
- Returns the l(infinity)-norm.
-
isHermitian()
- Returns true if this matrix is hermitian.
-
rows()
- Returns the number of rows.
-
setElement(int, int, double)
- Sets the value of an element of the matrix.
-
toComplexMatrix()
- Converts this matrix to a complex matrix.
-
toIntegerMatrix()
- Converts this matrix to an integer matrix.
-
toString()
- Returns a string representing this matrix.
matrix
protected double matrix[][]
- Array containing the elements of the matrix.
DoubleMatrix
protected DoubleMatrix()
- Constructs a matrix.
DoubleMatrix
public DoubleMatrix(int row,
int col)
- Constructs an empty matrix.
- Parameters:
- row - the number of rows
- col - the number of columns
DoubleMatrix
public DoubleMatrix(double array[][])
- Constructs a matrix by wrapping an array.
- Parameters:
- array - an assigned value
DoubleMatrix
public DoubleMatrix(DoubleVector array[])
- Constructs a matrix from an array of vectors.
- Parameters:
- array - an assigned value
equals
public boolean equals(Object m)
- Compares two double matrices for equality.
- Parameters:
- m - a double matrix
- Overrides:
- equals in class Object
clone
public Object clone()
- Creates a clone of this matrix.
- Returns:
- a copy of this matrix.
- Overrides:
- clone in class Object
toString
public String toString()
- Returns a string representing this matrix.
- Overrides:
- toString in class Object
hashCode
public int hashCode()
- Returns a hashcode for this matrix.
- Overrides:
- hashCode in class Object
toIntegerMatrix
public IntegerMatrix toIntegerMatrix()
- Converts this matrix to an integer matrix.
- Returns:
- an integer matrix
toComplexMatrix
public ComplexMatrix toComplexMatrix()
- Converts this matrix to a complex matrix.
- Returns:
- a complex matrix
isHermitian
public boolean isHermitian()
- Returns true if this matrix is hermitian.
getElement
public double getElement(int i,
int j)
- Returns an element of the matrix.
- Parameters:
- i - row index of the element
- j - column index of the element
- Throws: MatrixDimensionException
- If attempting to access an invalid element.
setElement
public void setElement(int i,
int j,
double x)
- Sets the value of an element of the matrix.
- Parameters:
- i - row index of the element
- j - column index of the element
- x - a number
- Throws: MatrixDimensionException
- If attempting to access an invalid element.
infNorm
public double infNorm()
- Returns the l(infinity)-norm.
frobeniusNorm
public double frobeniusNorm()
- Returns the Frobenius norm.
rows
public int rows()
- Returns the number of rows.
- Overrides:
- rows in class Matrix
columns
public int columns()
- Returns the number of columns.
- Overrides:
- columns in class Matrix
All Packages Class Hierarchy This Package Previous Next Index