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java.lang.ObjectJSci.maths.Matrix
JSci.maths.IntegerMatrix
JSci.maths.IntegerSquareMatrix
public class IntegerSquareMatrix
The IntegerSquareMatrix class provides an object for encapsulating square matrices containing integers.
Field Summary | |
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protected DoubleSquareMatrix[] |
LU
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protected int[] |
LUpivot
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Fields inherited from class JSci.maths.IntegerMatrix |
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ARRAY_2D, matrix |
Fields inherited from class JSci.maths.Matrix |
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CLASS_SPECIFIC, numCols, numRows, storageFormat |
Constructor Summary | |
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IntegerSquareMatrix(int size)
Constructs an empty matrix. |
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IntegerSquareMatrix(int[][] array)
Constructs a matrix by wrapping an array. |
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IntegerSquareMatrix(IntegerVector[] array)
Constructs a matrix from an array of vectors. |
protected |
IntegerSquareMatrix(int size,
int storeID)
Constructs a matrix. |
Method Summary | |
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IntegerMatrix |
add(IntegerMatrix m)
Returns the addition of this matrix and another. |
IntegerSquareMatrix |
add(IntegerSquareMatrix m)
Returns the addition of this matrix and another. |
DoubleSquareMatrix[] |
choleskyDecomposition()
Returns the Cholesky decomposition of this matrix. |
int |
det()
Returns the determinant. |
boolean |
isSymmetric()
Returns true if this matrix is symmetric. |
boolean |
isUnitary()
Returns true if this matrix is unitary. |
DoubleSquareMatrix[] |
luDecompose(int[] pivot)
Returns the LU decomposition of this matrix. |
IntegerSquareMatrix |
multiply(IntegerSquareMatrix m)
Returns the multiplication of this matrix and another. |
IntegerVector |
multiply(IntegerVector v)
Returns the multiplication of a vector by this matrix. |
IntegerMatrix |
scalarMultiply(int x)
Returns the multiplication of this matrix by a scalar. |
IntegerMatrix |
subtract(IntegerMatrix m)
Returns the subtraction of this matrix by another. |
IntegerSquareMatrix |
subtract(IntegerSquareMatrix m)
Returns the subtraction of this matrix by another. |
int |
trace()
Returns the trace. |
Matrix |
transpose()
Returns the transpose of this matrix. |
Methods inherited from class JSci.maths.IntegerMatrix |
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add, equals, finalize, frobeniusNorm, getElement, hashCode, infNorm, multiply, multiply, negate, scalarDivide, scalarMultiply, setElement, subtract, toComplexMatrix, toDoubleMatrix, toString |
Methods inherited from class JSci.maths.Matrix |
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columns, getInvalidElementMsg, rows |
Methods inherited from class java.lang.Object |
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clone, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected transient DoubleSquareMatrix[] LU
protected transient int[] LUpivot
Constructor Detail |
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protected IntegerSquareMatrix(int size, int storeID)
public IntegerSquareMatrix(int size)
size
- the number of rows/columns.public IntegerSquareMatrix(int[][] array)
array
- an assigned value.
MatrixDimensionException
- If the array is not square.public IntegerSquareMatrix(IntegerVector[] array)
array
- an assigned value.Method Detail |
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public boolean isSymmetric()
public boolean isUnitary()
public int det()
public int trace()
public IntegerMatrix add(IntegerMatrix m)
add
in class IntegerMatrix
m
- an integer matrix
MatrixDimensionException
- If the matrices are different sizes.public IntegerSquareMatrix add(IntegerSquareMatrix m)
m
- an integer square matrix
MatrixDimensionException
- If the matrices are different sizes.public IntegerMatrix subtract(IntegerMatrix m)
subtract
in class IntegerMatrix
m
- an integer matrix
MatrixDimensionException
- If the matrices are different sizes.public IntegerSquareMatrix subtract(IntegerSquareMatrix m)
m
- an integer square matrix
MatrixDimensionException
- If the matrices are different sizes.public IntegerMatrix scalarMultiply(int x)
scalarMultiply
in class IntegerMatrix
x
- an integer
public IntegerVector multiply(IntegerVector v)
multiply
in class IntegerMatrix
v
- an integer vector
DimensionException
- If the matrix and vector are incompatible.public IntegerSquareMatrix multiply(IntegerSquareMatrix m)
m
- an integer square matrix
MatrixDimensionException
- If the matrices are incompatible.public Matrix transpose()
transpose
in class IntegerMatrix
public DoubleSquareMatrix[] luDecompose(int[] pivot)
pivot
- an empty array of length the number of rows
to hold the pivot information (null if not interested).
The last array element will contain the parity.
public DoubleSquareMatrix[] choleskyDecomposition()
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